Roofing tile sheet I Roofing sheet and wall cladding

Transcription

Assembly instructions
2014
Roofing tile sheet I Roofing sheet and wall cladding
Rainwater system | Flashings and trims
TA B L E O F C O N T E N T S
Some words of advice .............................................................................. 4
General preparations, roofing ................................................................ 6
Plannja Roof tiles ................................................................................... 11
Plannja Flex ............................................................................................. 17
Plannja Profiled Roofing Sheet ............................................................. 22
Plannja Trend .......................................................................................... 26
Plannja Modern ...................................................................................... 38
Plannja Roofing Sheet ........................................................................... 43
Plannja Wall Cladding ............................................................................ 46
Plannja Rainwater system ...................................................................... 48
Plannja Flashings & Trims ....................................................................... 52
Renovating fibre cement roofs ............................................................. 53
General information on care & maintenance ...................................... 55
Roofing Sheet Lifetime .......................................................................... 55
Annual inspection................................................................................... 55
Restoring paint coatings ........................................................................ 56
Some words of advice
Plannja’s assembly instructions were created to help both the private individual and the
professional.
In order to make it easier for everyone to immediately find the instructions and the
help they need, we have divided the assembly instructions into distinct sections. The first
chapter – General preparations, roofing – is extremely important for those who have never
laid a roof before.
Don’t forget to stay calm and think through every step before you get to grips with
the actual installation. Good preparation and a methodical approach are the key to a
perfect result. The installation instructions must be followed for our warranty to be valid.
Plannja is Europe’s leading manufacturer of thin sheet building materials. Our wide
range of products means that we can provide product systems and total thin sheet solutions for almost any building project.
Roof components
Chimney trims.
Specially adapted to
the chimney by your
local roofer.
Ro
Soil vent pipe
End cover
Gable
trim
Drip cap
Downpipe
Window sill
4 – Some words of advice
Lad
oof ladder
Ridge
Ridge tile
Valley gutter
dder hook
Roofing tile
Ridge and eaves
snow guard
Ståndskiva
Headwall
flashing
Sill
Gutter
Some words of advice – 5
General preparations, roofing
UNDERLAYMENT
how to measure the roof
ON T RUSSES
The most common roof underlayment in new constructions is usually
fibreboard, plastic film or tongue-and-groove board/plywood, at least
17 mm thick with a felt paper underlay minimum YAP2200 quality, that
is assembled in accordance with suppliers instructions. Read more under
choice of batten/batten distance.
Begin by checking the roofs pitch and that the roof is even. Measure
diagonally from corner to corner. If the distances are unequal, the roof is
skewed. Deviations of 20–30 mm
can be adjusted with gable
flashings. Alternatively, the
angle can be checked using
Leng
ht
a 3-4-5 triangle as
illustrated.
Ri
se
Sheet metal can be laid on several different kinds of underlayment.
ON TONGUE-AND - G ROOVE PL ANKS/PLY WOOD
Clay tile and concrete tile roofs
Remove the old roofing. If the existing battens and counter battens are
to be used they must be moved so that the distances correspond to the
dimensions in “Installing battens” on page 8. Replace defective battens.
Shingles, felt paper, flat tiles
Allow the old roof to remain as underlayment. Seal any holes in the
simplest manner. The sheeting can be laid directly on the old roof on the
condition that the roof is watertight, even and that underlayment is in
good enough condition for fasteners to hold the sheeting down onto
the underlayment, which must be at least 17 mm thick.
However, we recommend the use of Plannja Combi Battens, Plannja
Renovation Battens or battens and counter battens.
Sinus profile sheeting (without asbestos)
The sheets may remain. Make sure they are watertight enough to act as
underlayment and that the battens beneath the sheets are good enough
to withstand the attachment of the batten. The lower edges of the joists
are bevelled to follow the underlayment and attached in direction of
pitch with screws.
Batten
Batten 45x70, c/c max 1,200 mm
Sinus profile fibre cement sheet
Plannja has developed several patented system solutions for renovating
fibre cement roofs. Read more under Renovating fibre cement roofs on
page 53.
Sheet metal roofs
An old sheet metal roof can be renovated in several ways. The sheeting
can be removed and a new roof laid, or in many cases the new sheet
metal roof can be laid on top of the old one. We recommend the use of
Plannja Renovation battens that are screwed to the old sheeting which
must be steel sheet, at least 0,5 mm thick. Contact Plannja if it is
aluminium sheet.
Screws in pairs or
rivets c max 200 mm
Plannja Renovation
Batten
Existing profiled steel sheet
6 – General preparations, roofing
Checking the pitch
B
A=1 m
How to calculate the minimum pitch: If dimension A is 1 metre,
dimension B must have the length indicated in column B.
Minimum recommended roof pitch
Pitch
Design requirement B
B=
Tile sheet: Minimum 1:4 (14°)
25 cm
Modern, Roofing sheet, Sinus 18: Minimum 1:6 (10°) Sealing strip at side and
end overlap
18 cm
Trend: Minimum 1:7 (8°)
Seal at side and end overlap
18 cm
P20-105, P20-75, 40, 45:
Minimum 1:10 (5,7°)
Sealing strip at side and end overlap, underlayment
10 cm
In the case of pitches of less than 14° special measures must be taken to
seal the roof at side overlaps and end overlaps (refer also to the
installation instruction for Plannja Profiled Roofing Sheet, page 22).
Sheet with anti-condensation coating can be laid down to 5.7° without
underlayment.
In order to calculate material consumption, various dimensions are
required according to roof type. This is illustrated on the following page.
In order for the dealer to make you an offer for a construction package for your roof, he will require some information
and measurements. Prepare your visit to the dealer by measuring your roof. Use the template below or fill in the information on the dealer’s website (only certain dealers).
This is my roof type:
B
H
E
B
B
G
G
C
A
D
J
A
1 2
M
A
F
E
4
3
1
C
E
D
B
D
F
1 3 A
I
C
1
2
J
5
4
3
F
A
D
4
3
B
C
3
2
6
5
4
C
D
EE
C
E
F
E
6
4
1
1 2
1 2 3 4
D
C
A
1
A
C
D
D
G
7
B
E
H
F
L
I
K
B
G
D
B
1 2
H
6
J
K
K
J EA
4
2
C
E
G
6
5
C
A
H
4
3
E
B
L
C
2
F
D
A
1 2
B
N
H
5
A
3
2
= Always down pipes
= Down pipes if eaves > 10 metres, otherwise every 10 metres.
NOTE! All dimensions in mm.
2 1
G
B
3
F
B
AG
3
F
2 1
We recommend a visit to ’Calculate My Roof’ at
http://beraknamittak.plannja.se. You can get help there with a
price estimate for a complete roof including rainwater systems
and all the accessories to suit the dimensions your roof has.
Roofing Sheet Construction Package:
1. Select the correct roof type above.
2. Fill in the measurements required for your roof type.
The alphabetical designations in the roof drawings show the measurements you need to take and fill in below.
A________________ mmB________________ mmC_______________
mmD_______________ mmE_________________ mm
F________________ mmG________________ mmH_______________
mmI________________ mmJ_________________ mm
K________________ mmL________________ mmM_______________
mmN_______________ mm
Rainwater system Construction Package:
Measure house height and eaves and note below.
House height:________________________________ Specify distance top edge of gutter to lower edge of diverter (mm).
Eaves:________________________________________ Distance from gutter to facade (mm).
Roof Safety Construction Package:
Decide on the roof safety products needed and set a cross beside each one.
Roof ladder
Snow Guard
Roof Walkway
Roof steps
Foot boards
3D duct
Ridge & eaves and eaves guard
General preparations, roofing – 7
choosing battEns
installing battens
Plannja roofing sheet can be installed on different types of batten.
Choose either Plannja Combi Batten, Plannja Renovation Battens or
wooden battens.
Note that Plannja Roofing sheet is installed on even underlayment,
therefore choose Plannja roofing sheet with stiffener when installing on
battens.
When installing battens, take into account the underlayment, the type of
batten and the geographical location of the roof. All dimensions in mm
unless otherwise specified.
PL ANNJA COMB I BAT TEN
Plannja Combi Batten is intended for new constructions and renovations.
It is designed to handle a truss distance of 1,200 mm. The standard
length is 2.700 mm and the profile height is 40 mm. Plannja Combi
Batten is supplied in kit form with fasteners. Wooden battens must be
used at eaves.
Installing battens for Plannja Roofing Tile Sheet
Batten distances for Plannja Roofing tile sheet must always follow tile
step. The distance between the first batten – the eave batten – and the
second batten (A) and other batten distances (B) are shown in the table
below. In the case of Plannja Flex, refer to page 17.
B
B
th
wid
A
Batten
Attachment to truss c/c 1200 mm
6.5x50 screws are used as fasteners,
two pcs. per truss.
Typical example of how to measure
truss spacing A and B.
Installation of Plannja roofing tile sheet on type-approved light underlayment. Truss distance, c/c 1,200 mm. Battens to be fastened using 2 pcs.
hot dip galvanized nails at each truss.
Attachment to wooden panel
Minimum thickness 17 mm.
Screws 4.8x35, distance max 300 mm in zigzag
pattern. Tighten screws carefully so that
they do not spin freely.
Overlapping joints
Combi Battens are joined by 100–300 mm overlaps. The joints are
located above trusses.
BRACKET
NORMAL JOINT
JOINT CLOSE TO SUPPORT
JOINT BETWEEN SUPPORTS
The batten may be
laid as a bracket
with max 300 mm.
Locate the joint above
a truss with min 100
mm overlap.
Joints closer to supports than
100 mm carried out shown
below with overlaps of at least
100 mm
Joint to be rendered rigid with
min 450 mm overlap and two
screws at each edge.
One 4.8x20 screw at
each waist
Two 4.8x20 screw
at each waist
PL ANNJA RENOVAT ION BAT TENS
Plannja Renovation Battens are primarily intended for renovation and
have cut-outs for gutter brackets/drainage holes which means they can
be used as eave batten and that they eliminate the need for counter
battens. They are not designed to support between trusses but will
require a structural support. The standard length is 3,000 mm and the
profile height 20 mm.
Cut-out for
gutter bracket/
drainage hole
Attachment to wooden panels with a minimum thickness of
17 mm
Screws 4.8x35 mm, distance max 300 mm in zigzag pattern. Tighten
screws carefully so that they do not spin freely.
Snow load
1,0–2,5
3,0–4,0
4,0
Wooden batten Wooden batten Plannja
45x70
45x95
Combi batten*
Royal A
375375390
B
400400400
Regent
A
325325340
B
350350350
Installation of Plannja roofing tile sheet on a wooden panel underlayment, minimum thickness 17 mm. Select counter battens dimensions
25x50 mm c/c distance 600 mm in pitch direction. Battens to be fastened
at crossing with counter battens with 2 pcs. hot dip galvanized nails.
Snow load
1,0–2,5
3,0–4,0
4,0
Wooden batten Wooden batten Plannja
25x50
34x70
Steel batten*
Royal A
390
375
390
B
400400400
RegentA
340
325
340
B
350350350
*Plannja Renovation or Combi Batten
Installing battens for Plannja Profiled Roofing Sheet
Underlayment of wooden panel, minimum thickness 17 mm. Counter
batten c/c distance 600 mm. Batten c/c distance 500 mm. Battens to be
fastened at crossing with counter battens with 2 pcs. hot dip galvanized
nails.
Snow loads
Counter batten
Batten, wooden
Steel batten*
1,0–2,5
3,0–4,0
25x50
25x50
25x50
34x70
Maximum snow load 4.0
*Plannja Renovation or Combi Batten
Underlayment of plastic sheet or fibreboard. Truss distance, c/c
1,200 mm. The values in the table relate to maximum distances between
battens. Battens to be fastened using 2 pcs. hot dip galvanized nails at
each truss. Plannja renovation and Combi battens to be fastened with
6.5x50 screws.
Snow loads
Wooden batten 45x70 Wooden batten 45x95 Combi batten
1,0–1,5
800
1,000
1,200
2,0–2,5
500
700
700
3,0–4,0
–
500
500
HANDLING SHEETING
SNOW LOAD MAP
When taking delivery of sheeting
As far as possible store Plannja package paneling indoors. Cover the
materials with tarpaulin when storing outdoors. Store package on an
incline if there is a risk of condensation. Make sure good ventilation is
achieved. This applies to both steel and aluminium.
Avoid damage to sheeting – carry it correctly!
Carry Plannja roofing tile sheet longer than 5 metres on edge or
on a wooden frame. If they are carried flat the sheets will bend
by their own weight and stretch. During subsequent installation
problems may be encountered with the fit between different
sheets.
Sheet durability and walkability
The walkability of thin sheet profile panels is difficult to define. In
general a certain degree of care must be taken when walking and
working on thin sheet roofs. Walkable sheeting refers to profiled panels
that will allow careful access without being damaged or suffering ugly
indentations.
Walkability and firmness are dependent on thickness
Thicker sheeting allows greater distances between battens and provides
improved walkability. For safety’s sake always try to walk above or
beside a batten.
In the case of Plannja roofing tile sheet and
Plannja Roofing sheet, always walk in
the profile valley.
Aluminium roofs are more sensitive
Aluminium is softer than sheet steel. Therefore exercise extreme caution
when walking on an aluminium roof.
Note that Plannja 20–75 in aluminium is not walkable at all if the batten
distance is the maximum 500 mm c/c.
IMPORTANt – ALUMINIUM ROOFS
A few things to remember when selecting an aluminium roof:
a) Aluminium moves more than steel with temperature changes. If the
pitch of the roof is more than 6 metres expansion and contraction can
be handled by pre-drilling the top sheet at each end overlap with an ø
8 mm bit before fastening the sheet. Avoid pitches longer than
12 metres!
Source: BFS 2011:10 - EKS 8.
b) When using wooden battens afix a strip of felt paper (see options
selections) above the battens to avoid hearing a clicking noise during
temperature changes. Not necessary when using Plannja Combi battens
or Renovation battens.
c) In order to prevent movement due to contraction/expansion, all
flashings must be fastened individually without using common screws in
overlaps, i.e. the screws must not penetrate both flashings.
General preparations, roofing – 9
CUT SHEET LIKE THIS
Tools
Cut sheet like this
Ideally, locate the cut so that it is
hidden by another sheet.
Note! Never use a grinding
wheel for cutting. Sparks from
the wheel can destroy the sheet
surface.
The following tools are required:
• Power screwdriver 1,500–2,000 rpm or variable
speed power drill with reverse and socket for
driver heads.
• Hammer
• Saw (for cutting battens)
• Nibbling machine, keyhole saw,
jigsaw or circular saw
• Metal shears
• Folding rule
Using a keyhole saw
circular saw or jigsaw
Stretch battens with clamps
above and below the sheet so
that there is a straight edge to
follow and support for the saw.
Use a metal blade on the saw.
The sawing must be done from
the backside.
Using a nibbling machine
Use a batten as a straight edge
and mark out where to cut with
a pen. It is easy to follow the
marking with the nibbling
machine: no support required.
Cutting lengthwise using
knife
Aluminium profiles can be bent
apart. Score with a knife
(preferably in an inside corner).
When scoring a plain surface,
use a straight edge as illustrated.
Then bend the sheet back and
forth until it parts.
Roof tiles
This section deals with the assembly of Plannja roof tiles Royal and Regent. It is important to read through the “General preparations, roofing” section before starting to
assemble your Plannja roof. The section provides information and advice on how to
measure your roof, what underlying materials are suitable, the choice of batten and
batten distances, and much more besides.
Assembly instructions, Plannja Roof tiles – 11
1. installation of eave batten
2. order of assembly
Wooden batten when renovating felt paper roof
Begin by installing the eave batten in a straight line. Unevenness in the
eaves is hidden by the eave flashing. Read more about installing gutter
brackets and roof drainage on page 48.
Plannja roofing tile sheets are installed in the following order:
6 3
5 2
7 4
1
Counter
batten
Eave
trim
Batten 25x50*
Gutter
Gutter bracket c/c distance
600 mm
**34x70 at snow
load 3.0–4.0
New construction on underlayment of board or plastic film
The gutter brackets are usually recessed as illustrated below. The eave
flashing is temporarily fastened above the gutter brackets using e.g.
sheet metal nails until such time as the roof panel is screwed in place.
The sheets are laid in rows from the eaves to the ridge. Make sure to lay
the first sheet with its lower edge parallel to the eaves. Slide the other
sheets in the row up so that any “gap” at the end overlap is as small as
possible before fastening.
The next row is laid with the first sheet’s lower edge in line with the
previously laid sheet. Slide the rest of the sheets in the row up as
described above before fastening.
Make sure the sheet is screwed properly fast (refer to the
fastening section) before walking on it. Never leave the
workplace with loose sheets on the roof.
In the case of special lengths (not in combination with standard lengths)
it can be advantageous to lay from left to right. Note that side overlap
requires sheets to be slid beneath sheeting already laid.
No spacer
Plannja Renovation batten on underlayment
of tongue-and-grooved board or plywood at least 17 mm
Staggered eaves
If the roof has staggered eaves (different roof lengths on the same
section of roof) the lowest tiles may be cut. If the c distance between
battens is 250 mm or more, the tiles are slid beneath the tiles above.
Should the c distance be less than 250 mm, it can be a better idea to
have an extended eaves flashing made as illustrated.
It might also be possible to adjust the length of the pitch instead by
moving the protruding eaves.
Plannja
renovation
batten
Eave
trim
Gutter bracket
c/c 600 mm.
inserted under
batten
Gutter
NOTE! The roof tile’s
location above the
renovation batten
30
Important to install the first sheet with
its lower edge parallel with the eaves.
a
>c
Self-drilling screw
in every second
profile valley
Eave trim
12 – Assembly instructions, Plannja Roof tiles
250
<c
50
a2
3. FIXING
4. Gable TRIM
Roofing tile sheets are fastened with self-drilling screws.
Plannja has special sockets for installation in power drills
that make screwing extremely simple.
The sheet must be fastened in the profile valley
using self-drilling screws equipped with seal washers.
Fasten according to the sequence below.
The screw marked with large dots in
the figure below (side overlap) must be
fastened first. Screw in every second profile
valley, on every second tile row.
Place a screw at the side overlap in
every profile valley. A rule of thumb is that
6–7 screws are needed per m2. In order for
the side overlap to be watertight we recommend
that the screws in the up side-overlap
sheet is displaced 25 mm toward the overlap (see fig.).
Gable flashing
Self-drilling screw c/c 300
Royal
H=57 mm
Regent H=40 mm
Smart H=42 mm
Bend up the sheet if
it is cut, separated
When joining trims cut away the corners
of the underlying trim so that the lower
can be slid under the upper. The join will
then be a better seal and less visible.
Overlap the fittings 100 mm.
25 mm
Fasten screws in every profile valley at end overlaps
(not illustrated in sequence below).
5. ridge
Before the ridge tile is screwed in place, any seal strip or gable
trims must be installed.
Slide the end
cap in from
below and screw
it into place
from above.
Sealing strips
are fastened to
the tile bottom
using construction silicone.
Hipped ridge
The following screws form part of the
programme:
Ridge piece
Screw 4.8x35
c/c max 300
Royal/Regent in steel on steel battens,
hot dip galvanized screws 4.8x20
Royal/Regent in steel on wooden battens, hot
dip galvanized screws 4.8x35
Royal/Regent in aluminium on wooden
battens, aluminium screws 5.5x35
Bend up at
angle-cut
sheet edge
Royal/Regent/Flex in aluminium on steel
battens, stainless steel screws 5.5x27
Royal/Regent/Flex in steel
on wooden battens, stainless steel
screws 4.8x35
Royal/Regent in steel on steel battens, hot dip
galvanized screws 4.8x20
6. Details
MANSARD ROOF
Dormer
Laid
overlapping
NOTE!
End cover
Spacer
Gutter join
at ridge
Underlayment
Penetrations
We recommend getting assistance from a professional for work around
chimneys, skylights and dormers.
Laid
overlapping
Details dealt with on
site by roofer.
Connection to high section
Sheet B
Bend at upper
end for
connection to
form a tight
seal
Seal strip
Note that sheet A is
installed before sheet
B, after which the
regular sequence is
followed.
Horizontal seam
Sheet A
Flashing
Screw 4.8x23 c/c = 400 mm
Closure strip
Flashing
Screw 4.8x35 c/c 200
Closure strip
Sill
Connection piece
to Royal
VALLEY GUTTERS
7. mAINTENANCE
Shown here is an installation with battens and counter battens.
For installations with only battens see page 24.
Alternative 1
A hook clamps is easily made by bending a piece of sheet.
Plannja roofing tile sheet normally requires very little maintenance.
Deposits that are not washed away by rain should be removed with a
soft brush and water.
Cut edges and paint damage that occur during installation should be
immediately touched up with Plannja touch-up paint. After installation, be careful to remove all drill swarf so that the roofing sheet does
not become miscoloured.
For further information on how to care for your Plannja roof, refer to
care and maintenance on page 55.
NOTE! When fastening the bottom batten, hammer in the nail without
its passing through the valley gutter.
The sheet must protrude 150 mm
beyond the valley gutter edge.
Valley gutter
Underlay
for gutter
Water
drainage
Construction felt Hook clamps c/c 400 underlay
The overlap on valley gutters must be at least 500 mm.
Alternative 2
Seal strip
Valley gutter
Underlay
for gutter
Construction felt
Water
drainage
underlay
Flex
This section deals with the installation of Plannja Flex. Before you begin the installation of your Plannja Roof, it is important to read through the installation instructions
carefully.
Assembly instructions, Plannja Flex – 17
1. UNDERLAYMENT
Underlayment of plastic sheet or board
Roof underlayment is usually fibreboard, plastic film or tongue-andgroove board/plywood, at least 17 mm thick with a felt paper underlay
minimum YAP2200 quality, that is assembled accordance with suppliers
instructions.
2. CHECK THE ROOF
Batten
Begin by checking that the roof is straight and its pitch. Measure
diagonally from corner to corner. If the distances are unequal, the roof is
skewed. Deviations of 20–30 mm can be adjusted with gable flashings.
Board or approved plastic
sheet
Second batten
H = 25 mm
Batten dimensions when installing Plannja Flex on underlayment of
type-approved plastic sheet or board. Truss distance 1200 c/c
Snow load 1.0–2.5 45x70
Snow load 3.0–4.0 45x95
4 HANDLING ROOFING SHEET
When taking delivery of roofing sheet
As far as possible store Plannja Flex indoors. Cover the materials with
tarpaulin when storing outdoors. If there is a risk of condensation store
packages inclined. Make sure good ventilation is achieved.
Minimum pitch for Plannja Flex is 1:4 (14 degrees)
3. INSTALLATION OF BATTENS AND EAVE
FLASHING
When installing battens pay attention to the type of underlayment, type
of battens and the location in Sweden. All dimensions in mm unless
otherwise specified.
The batten distance for Plannja Flex should be 350 mm and follow
roofing tile overlaps. The distance between the bottom of the batten
closest to the eaves and the centre of the second batten must however
always be 300 mm. Also note that the batten closest to the eaves must
be supplemented with a second batten height 25 mm; refer to drawing
below.
Underlayment of tongue-and-groove planks/plywood
Walkability
The walkability of thin sheet profile panels is difficult to define. In
general a certain degree of care must be taken when walking and
working on thin sheet roofs. Walkable sheeting refers to profiled panels
that will allow careful access without being damaged or suffering ugly
indentations. For safety’s sake always try to walk above or beside a
batten. In the case of Plannja Flex always step in the profile valley when
walking on the roof.
5 HOW TO CUT PLANNJA FLEX
Ideally, locate the cut so that it is hidden by another sheet. NOTE: Never
use a grinding wheel for cutting. Sparks from the wheel can destroy the
sheet surface. Use a batten as a straight edge and mark out where to cut
with a pen when using a nibbling machine. It’s easy to follow the
marking with the nibbling machine: no support required.
Tongue-and-groove planks/plywood underlayment felt minimum quality YAP 2200
Second batten
H = 25 mm
Batten
Counter batten
Batten dimensions when installing Plannja Flex on tongue-and-groove
planks/plywood, thickness minimum 17 mm, with minimum underlayment felt quality YAP 2200 and 25x50 mm laths, 600 mm centre-tocentre.
Snow zone 1.0–2.5 25x50
Snow zone 3.0–4.0 34x70
18 – Assembly instructions, Plannja Flex
6. TOOLS
The following tools are required:
• Power screwdriver 1,500–2,000 rpm or variable speed power drill with reverse and + socket for driver heads.
• Hammer
• Saw (for cutting battens)
• Nibbling machine, keyhole saw, jigsaw or circular saw
• Metal shears
• Rule
It is also possible to install Plannja Flex with a staggered side overlap.
Begin either as illustrated in fig. 2 with a piece of left-over number 7
sheet as the first sheet on the next row, which will probably have to be
cut again to fit, or with a half sheet on every other row as shown in fig.
3.
Fig. 2
7. INSTALLING THE EAVE BATTEN
etc.
eaves is concealed by the eaves flashing. It is important to install the first
sheet with its lower edge parallel with the eaves. Start measurement, as
per drawing below, must be 30 mm.
etc.
Fig. 3
9. FASTENING
Screw as per assy. plan
Lay the first sheet and check the start measurement 30 mm (refer to
Chapter 7). Fix the top right corner with a fastener in the profile valley
and then the bottom right corner. Lay the other sheets so that they
overlap with a wave. Fasten two screws in the profile top in the side
overlap. Check measurement is 30 mm and if necessary remove the
screw from the top right corner on the first sheet and adjust the two
sheets alongside the eaves. Continue installing the row (over-under-over
and so forth). When starting the next row it’s best to begin with the
screws in the profile tops. The basic rule is ‘sheet to sheet’ rather than
‘sheet to underlayment.’ When all the sheets are laid, fasten all the
remaining screws.
8. ORDER OF ASSEMBLY
Begin at the eaves and work toward the ridge; stagger the sheets row by
row and allow them to overlap alternately over and under. Sheet number
3 under sheet number 2 and so forth as illustrated in fig.1 below. The
sheets may be laid horizontally either from left to right or vice versa.
If you wish the Plannja Flex profile tops to be spread evenly across the
roof first measure roof length in order to determine the starting
dimension so that it is the same at both gables.
x
etc
.
Fig. 1
Fastener in profile valley
Fastener in profile apex
4.8x35
10. Details
ATTACHMENT TO HIGH SECTION
RIDGE, ALTERNATIVE 1
Ridge plate
Fold up the tile bottom if it has
been cut, split
Fold up the tile bottom
if it has been cut, split
Flashing
Screw c 220
Screw c 440
Seal strip
Seal strip attached with construction silicone in tile base
Fold up the tile bottom if it has
been cut, split
RIDGE, ALTERNATIVE 2
Ridge tile
Flashing
Screw c 300
Fold up the tile bottom
if it has been cut, split
Screw c 440
Seal strip attached with construction silicone in tile base
VALLEY GUTTER, ALTERNATIVE 1
For installation on laths and battens.
Brackets are easily made by bending a
piece of sheet
GABLE
Gable flashing
Screw c 300
56
Fold up the tile bottom if it
has been cut, split
Valley gutter
Drainage underlay
Hook clamp c 400
Construction felt
Underlayment for gutter
20 – Assembly instructions, Plannja Flex
VALLEY GUTTER, ALTERNATIVE 2
For installation on laths and battens.
Seal strip
Valley gutter
Drainage underlay
Construction felt
Underlayment for gutter
Profiled Roofing Sheet
This section deals with the assembly of Plannja Profiled Roofing Sheet. It is important to
read through the “General preparations, roofing” section before starting to assemble
your Plannja roof. The section provides information and advice on how to measure
your roof, what underlying materials are suitable, the choice of batten and batten
distances, and much more besides.
1. INSTALLATION OF EAVE TRIM
eaves is concealed by the eaves trim. Read more about the different
types of underlay on page 6, and about battens and batten distances on
page 8. Allow the sheet to protrude 7–8 mm beyond the eave trim to
keep the sheet cleaner and dryer.
Eaves flashing
4. FASTENING
Plannja Original fastener always helps to achieve the best results.
Screws
For best results with steel profiles,
use self-drilling, stainless steel or
galvanized painted roofing screws
with washers. Aluminium profiles must
always be attached with aluminium screws,
or self-drilling, stainless steel screws. Use a power
screwdriver and screw socket.
The screws included in the programme are:
Roofing material
Steel profiles
For fastening to:
Combi batten and
Renovation batten
4,8x20
Wooden batten
4,8x35
Aluminium-4,8x20
4,8x35
profiles
stainless steel screws aluminium screws
Lay the sheet from the bottom
at the roof’s outer edge.
Attach the sheet at a
right angle to the eave.
Sequence as per
schematic.
Attach the sheet like this
Maximum distance between
screw rows is 1.2 metres.
Sheet number 2
must overlap sheet
number 1 by at least
200 mm. This also applies to
the other end overlaps.
3. INSTALLATION OF PLANNJA ANTICONDENSATION COATED SHEET
Plannja’s Anti-condensation felt or Anti-condensation coating means
that:
1. The underside of the sheet is coated with Anti-condensation felt or
Anti-condensation coating that can temporarily absorb condensation.
2. The moisture is ventilated away between the occasions when
condensation occurs.
In moderate levels of humidity ventilation in the eaves
and ventilators at gable apexes can be sufficient, but as a
rule we recommend the choice of the special, ventilated
ridge. Construction condensation can cause problems of a temporary
nature. Plannja’s Anticondensation felt or Anticondensation is
recommended when there is a risk of moisture condensing on the
underside of the sheet in e.g. uninsulated spaces and shelters.
Put a screw in
every second profile valley
in the following places:
•
•
•
•
0,1 x
Build
ing w
idth
idth
gw
ldin
Bui
all sheet ends
all end overlaps
the second lowest batten counting from the eave
in battens that are within 1/10th of the building’s width,
measured from each gable.
Plannja 20–105 and Plannja Sinus 18
Otherwise Plannja 20–105 and Sinus 18 are attached at every third
valley and Plannja 20–75 at every fourth valley.
Plannja 20–75
The rows of screws
must be staggered for Plannja 20–75.
Every other row of screws is placed according to the upper markings
and the rows in between in the order shown in the figure above.
When screwing down every other valley, also begin at position 1.
5. Overlap – FASTENING AND SEALING
6. VALLEY GUTTERS
Side overlap if there is an underlayment
Shown here is an installation with battens alone. For installations
with battens and counter battens, see page 15.
Plannja 20–105 is screwed into each
batten at the overlap.
Plannja 20-105
Alternative 1
Screw
Plannja 20–75 is screwed
into each batten at the
overlap.
A hook clamps is easily made
by bending a piece of sheet.
Plannja 20-75
Plannja Sinus 18 is attached at
every other valley and is riveted in
the profile peak between each batten.
Side overlap if underlayment is lacking
If batten spacing is equal to or less than 500 mm, a screw must be put in
every batten at the overlap. If batten spacing is greater than 500 mm,
use a side overlap screw or rivet, max c distance 500 mm. If the roof
pitch is less than 14° run a 4 mm bead of sealant along the lower
profile’s top flange. A 3x10 mm self-adhesive seal strip may also be used.
Rivet or screw c/c 300 mm in the side overlap.
End overlap
The end overlap must be at least 200 mm and be above a batten. If the
roof pitch is less than 14° and underlayment is lacking, seal the end
overlap in the same way as the side overlap and screw the sheet down in
every profile valley. The end overlap must be at least 500 mm. If the
slope’s length exceeds the maximum length in the table below, shape
the end overlap such that the upper and lower sheet rows can be slid in
relation to each other when expanding/contracting (see fig.). NOTE! The
batten must be at least 90 mm or be doubled.
>15
Seal strip
0
Valley gutter
Profile valley,
bent up
Water diversion underlay
Hook clamps c/c 400 mm
Construction felt
Underlay for gutter
Alternative 2
On roof pitches of less than 14 degrees, installation should take place as
per alternative 2.
Bead
s of s
ealan
t
Profiled roofing sheet
Max length without
movable end overlap
Steel profiles
12 m
Aluminium profiles
6m
Eaves, gable and ridge trims
In order to reduce movement due to contraction/expansion, it is
necessary for all trims to be fastened without common screws in
overlaps, i.e. screws may not pass through both trims. Overlap ridge
trims by 200 mm. Overlap eave trim and gable trim by 100 mm.
Valley gutter
Use Plannja valley gutter if the roof has a valley. To be installed before
the roofing sheet is laid. Overlap 500 mm.
Profile bottoms
The profile bottoms must be bent up
at ridge and high section connections. If the roof pitch is less than
14° the profile bottoms at the eaves
must also be bent to facilitate water
run-off.
24 – Assembly instructions, Plannja Profiled Roofing Sheet
Seal strip 34 2662
Valley gutter
Water diversion underlay
Profile valley,
bent up
Construction felt
Underlay for gutter
9. TRIM AROUND CHIMNEY
7. GABLE TRIM
Gable trim
Self-drilling screw c/c 300 mm
Allow a roofer to deal with the trim around the chimney. Plannja has
trims that are suitable for use when the chimney is a long way from the
ridge.
10. Maintenance
Plannja roofing tiles and profiles normally require very little maintenance.
Deposits that are not washed away by rain should be removed with a
soft brush and water.
When joining trims,
cut away the corners on the underlying
trim so that the lower can be slid beneath the upper.
The join will then be a better seal and less visible.
Overlap ridge trims by 200 mm. Overlap eave trim and gable trim by
100 mm.
8. RIDGE
immediately touched up with Plannja touch-up paint. After installation,
be careful to remove all drill swarf so that the roofing sheet does not
become miscoloured.
Factory-painted and hot dip galvanized steel sheet normally requires very
little maintenance. Mechanical damage to the surface layer must
however be treated with touch-up paint.
For further information on how to take care of your Plannja roof, refer to
Care and maintenance on page 55.
Profile valley bent up
Ridge flashing
Seal strip
Ventilated ridge
Ridge, part 1
326643
Profile valley, bent up
50
Ridge, part 2
326644
Seal strip
Assembly instructions, Plannja Profiled Roofing Sheet – 25
Trend
Monteringsanvisning
TREND
26 – Assembly instructions, Plannja Trend
PREPARATIONS
Before you begin the installation of your Plannja Roof it is important to read through
the ”General Preparations, roof laying” section. The section provides information and
advice on how to measure your roof, what underlying materials are suitable, and
much more besides.
WORK SAFETY
Always follow applicable work safety legislation.
LABOUR
For safe assembly, we always recommend that at least two people perform the work.
TOOLS
No special tools are required for roof sheet installation. Nevertheless, a screwdriver
can the make work considerably easier. Cut sheets using sheet metal shears, a
nibbling machine or a circular saw. Never use a grinding wheel. The sheet’s coating
can be damaged by swarf from the wheel. A staple gun may be used for any
dampening strip installation.
TRANPORT, STORAGE AND HANDLING
Plannja Trend is delivered in specially designed packaging; allow the sheets to remain
in it until ready for use. Remember that long sheets may not be lifted by their ends;
the best method is to carry them by the snap locks.
Assembly instructions, Plannja Trend – 27
TECHNICAL INFORMATION
Material
Steel
Coating
Plannja Hard Coat 50
Aluzinc
Plannja Green Coat
Sheet thickness
0.60 mm
Weight
7,4/6,3 kg/m²
Täckande bredd
275/475 mm
Lenght 475 with ribs
0,7-10,0 m
Lenght 475 without ribs
0,7-7,0 m
Length 275 with and without ribs
0,7-7,0 m
Minimum recommended pitch
8° (1:7)
Seal in side overlap
8-14°
SHEET GEOMETRY
30 mm
Cover width 275/475 mm
INSTALLATION SCREWS
2
4.2×25 For fastening through the punched holes.
4.8x20 For sheet-to-sheet fastening.
4.8x20 For fastening sheet to wood.
Part No. 312001
4.8x20
Part No. 312332
4.2x25
Part No. 312002
4.8x35
RECYCLING
Take care to remove sheet clippings and screws from the roof, gutters and the ground
on completion of assembly. The materials are 100 per cent recyclable and can be
disposed of at recycling stations. Remember to pick up or sweep up nibbling chips from
the roofing sheets as they can otherwise cause damage to the coating.
1
ROOF MEASUREMENT
Diagonal measuring and symmetry
Split sheets
Whole sheets
Split sheets
Begin by checking roof measurements by
measuring the diagonals form corner to corner.
If the distances are unequal, the roof is skewed.
In this case lay the Plannja Trend so that its
lower edge aligns with the eaves. Deviations of
20-30 mm can be concealed with gable
flashings.
If you want the snap locks to be symmetrically
distributed across the roof first measure the length
of the roof in order to determine the widths of the
first and last sheets. Remember to add around 30
mm to the cutting width to make the fold up to the
bargeboard. Refer to step 8.
2
UNDERLAYMENT FOR PLANNJA TREND
The installation instruction illustrates alt. A
A
A. Lay Plannja Trend directly on to tongue-and-groove
planks/plywood, minimum thickness 17 mm and with
underlayment felt equivalent to minimum YAP2200, all
on condition that the roof is sealed and flat enough to
allow the sheet to be pressed onto the substrate.
Underlayment
Pl a n
t un
der l
ag
B
300
MM
Batten
28x70
S t rö
- oc
h bä
r läk
t
MM
100
B. If you choose to lay the roof on battens the
minimum batten width is 70 mm and max 300 mm c/c.
The final batten should be installed around 100 mm
from the ridge. Use underlayment felt equivalent to
minimum YAP2200.
Counter batten 25x50 c/c 600
C. If your house has battens fixed directly to the
trusses, the battens must be at least 45x70 and max
300 mm c/c. Install an underlayment of board or felt
below the battens.
C
300
Batten
45x70
MM
ä
Bär l
kt p
å ta
k s to
l
MM
100
For more information on alternatives B and C, visit
www.plannja.se
3
DAMPENING STRIPS
Installation on battens
When installing Plannja Trend 475 onto battens,
glue dampening strips in the centre of each sheet
from eaves to ridge. The dampening strip should
run from the second lowest to the second highest
batten. The aim is to reduce any sound that may
be caused by wind and rain.
Especially windy areas
However, it is not certain that noise can be
prevented in especially windy areas such as
locations close to the coast. In such cases we
recommend Plannja Trend with SoundControl,
which is a Trend variant with felt on the
underside. Remember to tear off or cut away
around 100 mm of the felt at the end of the sheet
that will lie on the eave flashing before you install
the sheet.
Staple
4
LIFTING SHEETS TO THE ROOF
Remember that long sheets may not be lifted by
their ends. The best method is to carry them by
the snap locks. The sheets can be slid up to the
roof along a pair of beams, a ladder or similar.
Carry sheets long side up by holding the snap
locks.
Use a pair of beams, a ladder or similar as a support on
which to slide the sheets up to the roof.
5
DIRECTION OF INSTALLATION
Plannja Trend is available for laying either from
the left or the right. Installation takes place
such that the stamped holes are on the sides
facing the direction of installation toward the
centre of the roof.
6
CONNECTING AT THE EAVES
Hemmed or straight front edge.
Plannja Trend is available in several variants for connecting
at the eaves; these two are the most common:
1. Hemmed for eaves. The hem is slid over the specially
adapted eave flashing.
2. Straight front edge; the sheet is laid with a 10 mm
protrusion over a standard eave flashing. See more variants
at www.plannja.se
3. The protrusion must be bent down in the case of pitches
between 8-14°.
1
2
3
7
EAVE FLASHING
Trend with hem at eaves.
The eave flashing is fastened with a screw (or
galvanized nail) into the underlayment at
distances of 500 mm. Bear in mind you may have
to install gutter brackets before the eave flashing.
Slot the flashings together when joining.
If you have chosen Plannja Trend with a straight
front edge, the eave flashings are joined with 100
mm overlaps instead.
0 mm
c/c 50
4.2X25
8
INSTALLING THE FIRST ROOF SHEET
The left side is fastened with screws
in punched holes.
Fasten with visible screws at the gable
Lay the first sheet in position. Check that it forms a
90° angle with the eaves. A margin of error of
20-30 mm at the eaves can be concealed later with
the gable flashing. Lay the first sheet so that its
seam slots over the eave flashing and then slide
up the sheet. Align the sheet and fasten with a
4.2x25 screw at the bottom corner and then at 300
mm intervals to the ridge, and with visible 4.8x35
screws at 300 mm intervals to the gable. The
screws in the punched holes must be centred in
the holes and may not be tightened so hard that
sheet heat expansion is hindered.
IMPORTANT!
Check that the first sheet
forms a 90° angle with the
eaves.
4.8X35
4.2X25
Check the angle using the 3-4-5 method, as illustrated.
Alt. 1
Alt. 2
9
SUBSEQUENT SHEETS
Sealant at
8-14°
”CLICK”
Remove the protective tape from the snap lock on the
sheet already installed. If the roof pitch is between 8-14°,
run a bead of sealing compound e.g. Plannja SPS, in the
side overlap. Attach subsequent sheets using our click
system. Lay the new sheet on the first sheet so that its
seam slots over the eave flashing and then slide up the
sheet. Press the snap lock into place from eaves to ridge.
Remember to ensure that the bottom edge is straight.
Fasten the sheet with 4.2x25 screws in the stamped holes
as per the assembly plan. Then fasten using the visible
screws at the eaves approx 20 mm from the snap lock.
RIDGE
4.8X35
GABLE
300 300
4.2X25
Screw 4.2x25 CONCEALED
Screw 4.8x35 VISIBLE
10
EAVES
SNAP LOCK END CAPS
Fold the tab at the bottom of the sheet through 90° to
form a neat end cap at the eaves.
The end cap is not available on Type A, straight front
edge.
11
VALLEY GUTTER
Attach the valley gutter to the substrate with the aid of
brackets or step brackets.
Plannja Trend sheet must protrude at least 150 mm
beyond the edge of the valley. Attach all sheets located at
the valley gutter using screws on the outside of the
gutter. Overlap gutters at joints by at least 500 mm. If
Trend is installed on battens, refer to www.plannja.se for
instructions.
Run a bead of sealant e.g. Plannja SPS, between the sheet
and the valley gutter, and a bead between the water
diversion underlay and the gutter seam.
Sealant
Drainage
layer
Clamps
4.8X35
Roofing felt
Clamps are easily made by shaping a piece of sheet.
12
GABLE FLASHING
The gable flashing is installed above the sheet edge and
screwed to the bargeboard at 300 mm intervals.
4,8X20
4.8X35
13
GABLE FLASHING END CAPS
Press the end caps into place at the bottom of the gable
flashing and fasten with two screws.
4.8X20
14
VENTILATED RIDGE SUPPORT
The ridge support is fastened with two screws through
the roofing sheet into the underlayment. Fold up the
profile base as illustrated.
Folded profile
base
4.8X35
15
RIDGE FLASHINGS
Fasten Plannja Trend 475 ridge flashings using two screws at
each ridge support. Use one screw per ridge support for
Plannja Trend 275. The flashings are joined by 200 mm
overlaps.
4.8X20
Modern
This section deals with the assembly of Plannja Modern. It is important to read through
the “General Preparations, roofing” section before starting to assemble your Plannja
roof. The section provides information and advice on how to measure your roof, what
underlying materials are suitable, and much more besides.
The image shows Plannja Modern installed directly on an even underlayment.
38 – Assembly instructions, Plannja Modern
1. UNDERLAYMENT
3. ORDER OF ASSEMBLY
Plannja Modern always requires some form of underlay cover and may
either be installed on battens or directly on an even underlay.
If you want the profile crowns to be symmetrically distributed across the
roof first measure the length of the roof in order to determine dimension
A for the first profile crown.
2. installing battens and eave TRIM
Begin by installing the battens closest to the eaves in a straight line.
Unevenness in the eaves is concealed by the eave trim. The batten
distance closest to the free end of Plannja Modern (at the eaves, ridge
and high section connection) and at any overlap may be max 150 mm.
Otherwise the max batten distance is 400 mm. Read more about various
types of underlay on page 6, along with the choice of batten and batten
distances on page 8. Note that the width of the batten must at least be
70 mm. If you are going to install Plannja eaves profile, you will need an
extra batten at the eaves; see page 41.
Lay the sheet from the bottom from the edge of the roof. Attach the
sheet at right angles to the eaves. Sequence as per schematic.
RIDGE
EAVES
Affix a dampening strip under the centre of each profile valley from the
eaves to the ridge. The dampening strip may begin from the second
lowest batten and end at the second highest. The aim is to reduce any
noise that may be caused by wind and rain.
Sheet number 2 must overlap sheet number 1 by at least 200 mm.
4. FASTENING
Resilient strip
On a flat underlayment
Resilient strip
4.8x35
On battens
4.8x65
4.8x35 used for profile valleys and trim.
4.8x65 used for profile crowns.
Assembly instructions, Plannja Modern – 39
Locked end overlap
Put two screws in every profile valley into the batten closest to the eaves
and at each end overlap; see fig. below.
A bead of sealant, e.g. Plannja SPS, between
the sheets.
2 screws/profile valley
1 screw/profile apex
On battens
A bead of sealant, e.g. Plannja SPS, between
the sheets.
Installation on a flat underlayment: One screw in every profile peak
c/c 400 mm.
Installation on battens: Two screws in every profile valley into every
second batten.
2 screw/profile valley
A bead of sealant, e.g. Plannja SPS,
between the sheet and eave flashing.
On battens
Drainage underlay
5. OVERLAPS – FASTENING AND SEALING
between the sheet and eave flashing.
Side overlap
On battens
On battens
RIGHT
Dampening strip
If the roof pitch is 10–14º, run a bead of sealant e.g. Plannja SPS, along
the lower profile’s top flange. A 3x10 mm self-adhesive seal strip may
also be used. Staple or screw the side overlap at 300 mm intervals.
Do not tighten the screw in the profile peak too hard, otherwise there is
a risk that profile shape will be distorted as illustrated below creating a
gap between the sheet and the dampening strip.
WRONG
Dampening strip
Gap
40 – Assembly instructions, Plannja Modern
End overlap
The end overlap must be at least 200 mm and be above a batten. If the
pitch is 10–14º, the end overlap must be at least 500 mm and be sealed
in the same manner as the side overlap. If the slope exceeds 12 m, the
end overlaps must be shaped so that the upper and lower sheet rows
can slide in relation to one another during contraction/expansion: see
page 24.
In order to reduce contraction/expansion movements it is necessary for
all trims to be fastened without shared screws in overlaps, i.e. screws
may not pass through both trims. Overlap ridge trims by 200 mm.
Overlap eave and gable trims by 100 mm.
Valley gutter
Use Plannja valley gutter if the roof has a valley. Install it before laying
the roof sheet and overlap by 500 mm.
The profile bottoms must be bent up at ridge and high section connections.
8. INSTALLING PLANNJA EAVE PROFILE
Always install from right to left when using Plannja eave profile, as
described under Order of Assembly on page 39. First install the modified
eave trim along the length of the eaves. Overlap the trim as illustrated
below. Then lay out and fasten the first eave profile and the sealant
before laying out and fastening the first Plannja Modern sheet. The order
of installation is then: eave profile – Plannja Modern– eave profile, and
so forth.
6. GABLE trim
Eave trim joint
Gable flashing
Self-drilling screw c 300
Eave profile
Overlap 100 mm
Eave flashing
7. RIDGE
Bend eave flashing up
Ridge plate
Folded profile base
Ventilated ridge support
2 screws/ridge support
between the sheet and eave profile.
Eave profile
Ridge plate
Folded profile base
Drainage underlay
Eave flashing
Ventilated ridge support
2 screws/ridge support
between the sheet and eave profile.
Eave profile
Drainage underlay
On battens
Eave flashing
Extra batten
On battens
Assembly instructions, Plannja Modern – 41
Roofing Sheet
This section deals with the assembly of Plannja Roofing Sheet. It is important to read
through the “General Preparations, roofing” section before starting to assemble your
Plannja roof. The section provides information and advice on how to measure your
roof, what underlying materials are suitable, and much more besides.
Assembly instructions, Plannja Roofing Sheet – 43
1. UNDERLAY
4. FASTENING
Plannja Roofing Sheet without ribs
Is different to other profile sheet in that it requires an even support
structure and underlay felt. It can be installed on battens with underlayment but there is a great risk that the strips will show through, which is
why we recommend the choice of Roofing Sheet with ribs; see below.
Plannja Original fastener always helps to achieve the best results.
Plannja Roofing Sheet with ribs
Can be installed directly on battens. Max batten distance with regard to
sheet walkability is 500 mm. Read more about the different types of
underlay on page 6 along with the choice of battens and batten
distances on page 8.
2. INSTALLING EAVES TRIM
Attach Plannja Roofing Sheet like this
Screw Plannja Roofing Sheet c/c 500 mm in every profile valley with
screw 4,8x35 or in every profile top with screw 4,8x65, but always one
screw in each profile valley at the bottom of the eaves and ridge. Screw
Plannja Roofing Sheet with ribs to each batten and through each profile
valley or profile top.
5. Overlap – FASTENING AND SEALING
Begin by installing the eaves trim in a straight line.
Plannja Roofing Sheet
Drainage underlay
Side overlap
Fasten Plannja Roofing Sheet in the profile valley c/c 500 mm, or at each
batten as illustrated.
If the roof pitch is 10°–14° run a 4 mm bead of sealant along the lower
profile’s top flange. A 3x10 mm self-adhesive seal strip may also be used.
Rivet or screw c/c 300 mm in the side overlap.
Eaves flashing
Lay the sheet from
the bottom at the
roof’s outer edge.
Attach the
sheet at a
right angle to the
eave. Sequence as
per schematic.
Sheet number 2
must overlap sheet
number 1 by at least
200 mm. This also applies to
the other end overlaps.
End overlap
The end overlap must be at least 200 mm. If the roof pitch is 10°–14°,
seal the end overlap in the same manner as the side overlap. The end
overlap must be at least 500 mm.
If the slope’s length exceeds the maximum length in the table below,
shape the end overlap such that the upper and lower sheet rows can
slide in relation to one another when expanding/contracting.
Roofing sheet
Max length without
movable end overlap
Steel profiles
12 m
In order to prevent contraction/expansion movement it is necessary for
all trims to be fastened without common screws in overlaps, i.e. screws
may not pass through both trims. Overlap 100 mm.
Valley gutter
Use Plannja valley gutter if the roof has a valley. To be installed before
the roofing sheet is laid. Overlap 500 mm.
Profile valleys
The profile bottoms must be bent up at ridge and high section connections. If the roof pitch is 10°–14° the profile bottoms at the eaves must
also be bent to facilitate water run-off.
44 – Assembly instructions, Plannja Roofing Sheet
6. VALLEY GUTTERS
7. GABLE TRIM
A hook clamp is easily made by shaping a piece of sheet.
Screw c 300
Gable flashing
When joining trims, cut away the
corners on the underlying trim so
that the lower can be slid beneath
the upper. The join will then be a
better seal and less visible.
Valley gutter
Hook clamp c 400
Valley gutter
Construction
Valley gutter
felt
8. RIDGE
Ridge plate
Folded profile valley
Seal strips
Plannja SPS sealant or equivalent.
Drainage underlay
9. TRIM AROUND CHIMNEY
Allow a roofer to deal with the trims around the chimney.
10. mAINTENANCE
Plannja roofing tiles and wall cladding normally require very little
maintenance. Deposits that are not washed away by rain should be
removed with a soft brush and water.
immediately touched up with Plannja touch-up paint. After installation,
be careful to remove all drill swarf so that the roofing sheet does not
become miscoloured.
Factory-painted and hot dip galvanized steel sheet normally requires very
little maintenance. Mechanical damage to the surface layer must
however be treated with touch-up paint.
For further information on how to take care of your Plannja roof,
refer to Care and maintenance on page 55.
Assembly instructions, Plannja Roofing Sheet – 45
Wall cladding
This section deals with the assembly of classic Plannja sheet suitable for installation
as wall cladding, such as Plannja 45F, Plannja 35 and Plannja Sinus sheeting. We have
chosen to show how installation takes place without going too deeply into the actual
wall framing structure. But we do recommend that you read through the installation
instructions first before you install the sheeting on the walls.
46 – Assembly instructions, Plannja Wall Cladding
PURLIN DISTANCE AND OVERLAPS
Frame structure and method will vary depending on the type of wall
Plannja sheeting will be attached to.
Purlin distance
On insulated wall the purlin distance is adapted to the format of the
insulation. On uninsulated walls the purlin distance is limited to 1.5 m.
The purlin distance can be extended to 2.1 m for Plannja 35 in steel.
Side overlaps:
Steel sheet is joined c 600 with hot dip zinc, painted 4.8x20 screws, or
rivets. Aluminium profiles are fixed c 600 with stainless steel, painted
4.8x20 screw, painted aluminium 5.5x20 screws or rivets. If purlin
distance is less or equal to 600 mm, no special side overlap join is
required.
5 mm gap
End overlaps:
End overlaps must be 100 mm and supported by a horizontal purlin
behind. If total sheet length exceeds 6 metres in the case of aluminium
sheet, or 12 metres for steel sheet, the end overlaps must be shaped
such that the sheet ends can slide in relation to each other when
expanding/contracting.
Illustrated below are examples of solutions for moveable end overlaps on
wooden purlins.
FASTENING
•
•
•
all sheet ends
all end overlaps
in both directions at outer corners within a zone that
is equivalent to 1/10th of the buildings width.
In other places the following applies:
Fasten Plannja 35 in every profile valley as illustrated below.
If the narrow profile crowns on Plannja 35 are turned outwards, fasten
as close to the profile web as possible.
Fasten Plannja 20–105 in every third profile valley as shown below:
Fasten Plannja 20–75 in every fourth profile valley.
The rows of screws are displaced so that every other row of screws is
placed according to the upper markings and the rows in between in the
order shown in the figure above.
Fasten Plannja 19 in every other profile valley as illustrated below.
Fastening with screws
Use self-drilling, painted screws with washers. Use a variable power
screwdriver and screw socket. There are screws with small diameter
screw heads for Sinus sheeting. The screws included in the programme
are:
Purlin
Attach the sheet like this:
Put a screw into every profile valley in Plannja 35, Sinus 51, Plannja 15
and Plannja 19, and a screw in every other profile valley in Plannja
20–105, Plannja 20–75 and Sinus 18 at the following places:
Aluminium profiles
Steel profiles
Steel purlin
Stainless steel screw
<1,25 mm
4,8x20
Galv. screw
4,8x20
4,8x20
Steel purlin
>1,0 mm
5,5x22
5,5x22
Wooden purlin Aluminium screw
5,5x35
4,8x35
Fasten Plannja Sinus 18 in every third profile valley.
Galv. screw
4,8x35
4,8x35
Fasten Plannja Sinus 51 in every second profile valley.
Maintenance
Plannja roofing tiles and wall cladding normally require very little
maintenance. Deposits that are not washed away by rain should be
removed with a soft brush and water.
immediately touched up with Plannja touch-up paint.
After installation, be careful to remove all drill swarf so that the roofing
sheet does not become discoloured.
For further information on how to care for your Plannja sheet, refer to
Care and maintenance on page 55.
Assembly instructions, Plannja Wall Cladding – 47
Rainwater system
This section deals with the assembly of Plannja Rainwater system, gutters, downpipes,
brackets, pipe bracket and other components. It is important to read through the “General Preparations, Rainwater system” section before starting to assemble your Plannja
Rainwater system. The section provides information and advice on how to measure
your roof, how many downpipes you will need, the number of gutter brackets, drop
and much more besides.
48 – Assembly instructions, Plannja Rainwater system
GENERAL PREPARATIONS, RAINWATER SYSTEM
Measure the roof
Measure the length and breadth of each half of the roof. If the area is
less than 75 m2, use gutters with a width of 100 mm and pipes with a
diameter of 75 or 90 mm. If the area is 75–125 m2, use gutters with a
width of 125 mm and pipes with a diameter of 90 mm.
There are gutters with a width of 150 mm and downpipes with
diameters of 100 mm for roofs with even larger areas.
Number of downpipes
Count on each downpipe being able to handle a gutter length of 10
meters. Houses with hipped roofs should always be fitted with two
downpipes per long side and a gutter with a width of 125 m. Locate the
downpipes on L-shaped houses as illustrated. Use gutters that are
suitable for the roof area.
Dimensioning for rainwater systems
Gutters
Plannja table
Roof area max m2
≤ 75
≤ 125
≤ 200
Select gutter
100
125
150
≤ 275
R 125
rectangular*
Rectangular gutters are given a cross-sectional area at least equivalent to semicircular.
Downpipes
Example
L = 18 m
B=9m
A = 162 m2
Table
Roof area m2
≤ 80
≤ 125
≤ 180
≤ 230
≤ 300
75
90
100
110
120
Select downpipe
Downpipe
locations
Pitched roof
L-shaped roof
Hip roof
Begin by measuring where the gutter brackets will be attached. Then install the gutter brackets, gutters and downpipes.
How to measure:
For distances of 10 metres, one downpipe is enough. The brackets are distributed
as illustrated in fig. 1 below, and are marked 1, 2, 3 and so forth. Install the first
and last brackets 10 cm from the edge of the roof. For distances greater than 10
metres, 2 downpipes are required. The brackets are distributed as illustrated in fig.
2 below and are marked 1–1, 2–2 and so forth. Install brackets 1–1 about 30 cm
from the centre and the last brackets around 10 cm from the edge of the roof.
Screw short brackets directly into the fascia board. If the fascia board is not
installed plumb the short
bracket may be bent or a
2 . 100 600 600 600 600 mm
specially adapted short
bracket for 27° pitches may
be used or either of the two
compact fittings.
6
Slope
Downpipe
Tools
There are no extraordinary tools required for installing
Plannja Rainwater system, just a rubber hammer, pliers, screwdriver,
a file, ruler, line (or cord) and a bracket bender. Bracket
benders can be rented from your local hardware store.
5
4
100 mm
100 600 600 600 600 mm
1.
13
12 11 10
9 8
7
6
5
4
3
2
Downpipe
House length up to 10 m – 1 downpipe
Example: 10 m/0.6 m = 18 brackets
3
2
1
1
1
Slope
2
3
4
5
100 mm
6
Slope
House length 10–20 m – 2 downpipes
Example: 20 m/0.6 m = 34 brackets
Downpipe
General preparations, Plannja Rainwater system – 49
GUTTER BRACKETS
GUTTERS
A gutter bracket is required every
60 cm to support the gutter. Install
the gutter sloping toward the
downpipe; the slope must be
2,5 mm/m. To achieve a degree of
self-cleaning, the incline should be
5–7 mm/m. Gutter brackets should
be installed as illustrated to reduce
the effect of snow slides.
First mark out how far from the
end of the gutter to place the
downpipe.
Make two angled cuts so that the
opening is around 10 cm. Bend the
edges down into the hole to
improve the run-off.
Slide the folded edge into the
gutter outlet. Slide the outlet
toward the back and fold over the
tabs, The gutter’s rounded lip
must face outwards.
Long brackets
Bend the long brackets so that
the gutter has an incline. Do the
following:
1 2 3 4 osv
• Mark the base line as illustrated,
place the brackets together and
mark the base line on the first
and last brackets.
• Roof length/5 mm per
metre gives the total incline,
which is marked on the last Example Building length
bracket.
10 metres
• Draw a line between the base line
Incline/m 5 mm = 50 mm
and the incline measurement as illustrated.
• Number the brackets and bend them
using a bracket bender.
Fasten the brackets with screws.
Install the universal end plate by
twisting it into the gutter’s
rounded lip. Apply a bead of
sealant and press the end plate
into the gutter. Hammer the cover
into position.
The Combi end plate is installed by
pushing it onto the gutter. The
end plate is secured as illustrated.
Finish off by folding the gutter
end plate’s free point in with a
twist of the thumb (see fig.).
Short brackets, compact brackets and adjustable
brackets
Mark the slope with the aid of line (cord).
Screw the hooks into
the fascia board.
Screw into
fascia board.
Line
Adjustable brackets
Measure the eaves angle (1). Fix the bracket in the correct position
(2), bend it and lock the U-bracket securely in position. At eaves
angles of 0–18°, bend the U-bracket inwards (3), and outwards (4)
at 22–45°. You can test the suitability of the angle by holding the
bracket against the fascia board and checking with a plumb line.
Then adjust the remaining brackets into the same position as the
first. Adjustable brackets are installed using 4 screws.
1
2
Cut the gutter to the correct
length and hang it in the brackets.
Press the gutter to the front edge
of the brackets and twist over the
front lip. Then twist the gutter
down and lock it into the rear lip.
If you are using Plannja U-brackets
or Compact brackets, put the
gutter into the front of the
bracket. Then press down the
gutter so that it is fixed into
position by the stop tab at the
back of the bracket.
If you use adjustable brackets,
place the gutter at the back of the
bracket first. Then press the front
edge of the gutter down and lock
it into place with the front tongue.
0°
45°
3
0-18°
4
22-45°
50 – Assembly instructions, Plannja Rainwater system
Join gutters using gutter joins.
Slide the gutters together. Position
the gutter join on the back edge
and press it onto the gutter. Fold
the lock down onto the gutter
using the palm of the hand.
STRAIGHT CONNECTOR
OUTLET
Outlet
The outlet is installed when the downpipe is
not connected to a surface water pipe.
Attach the diverter with screws or pop
rivets.
The length of the straight connector –
the pipe between the two elbows – is
measured as follows.
Press the upper pipe elbow (1) onto the
gutter outlet and align it with the
intended downpipe location.
1
Hold up the lower elbow (2) and align
Len
it with the upper elbow. The distance
gh
t+
between the elbow and the wall should
10
be 35 mm.
cm
Adjust the elbows so that they align
with each other. Use the rule as a
straight edge. Measure the distance
between the elbows and add 10 cm.
Extension pipe, drain trap, self-cleaning
leaf trap, connectors
Drain traps and leaf traps prevent trash from
ending up in the surface water drains. Drain
traps are fitted with or without extension
pipes.
Self-cleaning leaf traps are installed directly
between the downpipe and surface water
drain. Connectors are available for different
dimensions of surface water drainage pipes.
2
Straight connector
The straight connector is available in 0.5 metre lengths with shrunk
ends. Cut downpipes can also be used for buildings with deep eaves.
Recommended attachment of elbows to the gutter outlet and drain pipe
is with 2 pcs pop rivets or equivalent.
Drain diverter, drain strainer
The drain diverter is used between the
downpipe and the surface water drain.
A drain strainer is installed directly into the
surface water drain to prevent trash from
blocking it.
PIPE BRACKET
Pipe
bracket
Install the pipe bracket 10 cm below
the lower elbow. Pipe brackets are
available for brick and wooden walls.
Pre-drill holes in stone/brick walls for
the strap pins.
Drill into the mortar, not into the brick.
The distance between pipe brackets
should be max 2 metres. Fit the pipe
components together and connect
them to the gutter outlet. Check that
the downpipe is straight and adjust the
length as necessary.
Foldable diverter, leaf strainer with
rainwater branch
Do you want to collect rainwater?
Install a foldable diverter onto the downpipe
or connect a rainwater branch pipe to a
hose so that water can be piped to flowers
and shrubs.
ACCESSORIES
The wood pipe bracket is screwed onto the
wall. The stone pipe bracket is hung onto
the pin and is fastened by bending it
around the protruding pin and the lower
edge of the pin plate.
The downpipe is fitted into the bracket and
locked by turning the lock button a half turn
clockwise with a screwdriver.
To remove, open the pipe bracket by turning the lock button anti-clockwise a half turn and then insert the screwdriver into one of the
detachment holes in order to release the button.
Downpipe branch
The branch is used for draining several roofs
via the same downpipe.
Overflow protection
The overflow protection prevents
water overflowing at inside corners.
Also available as straight overflow
protection.
Assembly instructions, Plannja Rainwater system – 51
Flashings & trims
In this section you will find out how to install upper and lower window flashings and
gable trims. Window flashings and gable trims are available in steel and aluminium
and in different colours to suit your house. Window flashings are pre-frilled for nailing
every 100 mm.
installing window flashings
Drip cap
Installed above the window case. Prevents
water forcing its way into the structure.
The drip cap is screwed or nailed every
10 cm.
Installation tips
Cut to correct length, 30 mm longer than the groove in the window
frame. Angle cut a notch at the front and back edges. Bend up an
approx 10 mm tab at both ends and fold in the back edge as illustrated.
Press the back edge into the frame groove. Screw or nail the trim every
10 cm.
1
2
Fold up
Window sill
Installed in the window frame’s routed
groove. Prevents water and snow from
forcing its way behind the façade
cladding. See alternative below.
3
installing gable TRIMS
When joining gable trims cut away
the corners of the underlying trim so that
the lower can be slid under the upper.
The join will then be a better seal
and less visible.
52 – Assembly instructions, Plannja Flashings & Trims
Renovating fibre cement roofs
Fibre cement roof
Existing fibre cement roofing can either be covered over or
demolished. An advantage of covering it is that there is no need
for demolition, which can be a health hazard if the roofing cracks
and causes dust.
If a contractor is used for the work and the sheets cannot be
taken down whole, the contractor must apply for a permit
from the competent authority; cf. below. The work must be
carried out using special protective equipment. According to
the Swedish Work Environment Authority training is
required for all asbestos handling. A permit is required if
holes need to be drilled/machined. The sheets must always
be disposed of in a special manner; check with the sanitary
department in your town.
Another advantage with allowing fibre cement to remain is that it
can serve as a condensation and run-off barrier so that the risk of
rain getting in during the renovation period is avoided. The
disadvantage is that the fibre cement remains in the structure,
which makes future demolition more difficult. In addition,
construction work becomes a little more complicated.
The conditions for keeping the old roof as an inner roof is that
the old trusses and beams are in satisfactory condition, that the
fibre cement sheets are walkable and sufficiently watertight, and
if screws are to remain, that these are fully removable.
Plannja has three methods for renovating fibre cement roofs
known as methods A, B and C. Method A means that treating the
sheeting is avoided and it is especially suitable when it is to be
covered by Plannja roofing tile sheet. The method is described
below.
Method C has the same area of use and is simplest, but it
entails drilling in the fibre cement, which brings the risk of
spreading asbestos fibres. If a contractor is used for the work he
must apply for a permit with the competent authority, and the
work must be carried out using protective equipment. If the
house owner carries out the work, the use of a filtering face piece
with particle filter class P3 is still recommended. One condition for
the use of method C is that there is a sealing layer beneath the
fibre cement to prevent fibres getting into the loft. The method is
described below. If the roofing sheets do not contain fibre
cement, method C is simplest and most preferable.
Method B also means that treating the fibre cement is avoided,
but it is best suited for covering with profiled steel sheet.
Plannja´s ABC of fibre cement renovation
A: ROOFING TILES OR PROFILED SHEET ON BATTENS AND COUNTER BATTENS
Plannja lock washers, battens and counter battens
This method is designed for roofing tile sheet and profiled sheet
as a roof covering above the fibre cement.
The new roof is fastened using patented washers that are fastened with the old fibre cement roof screws or with new screws
as replacements for nails.
1
Loosen the existing
We recommend
roof screw a little.
Plannja Combi battens
but wooden battens may also
be used.
4
Fasten trims, gutter
brackets, roofing sheets
3
Fasten the lock washers
under the screws.
and roof guards.
2
Use Plannja steel purlin or place wooden
counter battens zigzag on either side of the
roof screw.
Assembly instructions, Renovating fibre cement roofs – 53
B: PROFILED SHEET ON BATTENS
Using Plannja support plates and battens
The method is specially designed for safe, rational use of profiled roofing sheet as a surface material.
The new roof is fastened using patented washers that are
fastened with the old fibre cement roof screws or with new
screws as replacements for nails.
1
3
Loosen the existing
roof screw a little.
Fasten the
Plannja Combi batten or
4
wooden batten to the support
Fasten trims, gutter brackets,
plates.
roofing sheet and roof guards.
2
Hook the support plates under
the screws.
C: Plannja counter battens and Combi battens for fibre cement renovation
Using Plannja counter battens and Combi battens for
fibre cement renovation
The method is suitable for Plannja roofing tile sheet and profiled
sheet. A new steel purlin is attached using self-drilling screws
through the fibre cement profile valley into the supporting structure. The rubber strip at the bottom edge is intended to collect any
drill dust when fastening the screws.
This method requires permission from the competent
authority and may only be used when such permission is
granted. Special protective equipment is necessary for
attaching the counter batters.
1
A Z-section steel purlin is fastened using
Fasten trims, gutter brackets, roofing
sheets and roof guards.
3
self-drilling screws through the old roof.
Fibre cement dust is collected in a
rubber strip during the
drilling phase.
54 – Assembly instructions, Renovating fibre cement roofs
Rubber strip
2
We recommend the use
of Plannja Combi battens.
Wooden battens are used
at the bottom for fastening
gutter brackets.
Care and maintenance of Plannja products
As a purchaser of Plannja products you are able to extend the lifetime
through the choice of basic materials and coating systems. This requires
knowledge of factors that are important for the choice of product.
Inspecting and maintaining painted Plannja products will in many cases
extend the lifetime of your product significantly. You can either take care
of inspections and maintenance yourself, or assign the work to a specialist
company.
For example, companies that are members of PLR, the Swedish Sheet
Metal Association, take on inspection and maintenance contracts. Regular
inspections and maintenance are a wise investment – they can provide
painted panels with a lifetime of 40 to 50 years or more.
Measuring lifetime
We use two different measurements when it comes to the lifetime of
Plannja sheet metal products; aesthetic and technical.
Aesthetic lifetime is a measure of the time it takes until the paint coating
has changed so much that its appearance no longer meets requirements.
How large a change in colour and gloss is acceptable for sheet metal cladding depends on the beholder and the type of building the panels are on.
Technical lifetime is the time it takes until a panel is no longer able to
protect a building’s supporting structure or the panel’s underlying material and structures. Technical lifetime is usually significantly longer than
aesthetic lifetime.
Here’s how you can affect the lifetime of your
chosen product
The very choice of product affects product lifetime. In most environments
aluminium sheet provides longer lifetime than steel sheet, but at a higher
cost.
There are also differences between coating systems and between
different colours within the same system. Pale colours heat up less in the
sun, and therefore they generally last longer than dark colours, which can
get very hot.
Lifetime also depends on whether the material is used for walls or
roofs. Roofs facing south with low pitches are affected more by the sun
than surfaces that face north.
External factors affect lifetime
The environment surrounding a building means a great deal for how paint
ages. Heavily trafficked roads, and polluting industries etc. affect a panel’s
protective zinc and paint coatings over time.
Solar radiation affects the aging of a paint coating in two ways –
through ultra violet radiation and heating. Both contribute to the
breakdown of the paint in the long term.
Certain weather conditions and proximity to salt-water spray in
maritime environments also affect paint aging.
Panel lifetime also depends on how much of the metal’s cut edges is
exposed. Flat panels with folded cut edges can handle tougher environments than profiled panels with exposed edges.
Damage during construction and use
Damage to paint layers that may occur during construction and afterwards
can mean that panels have impaired protection against environmental
stress.
Thin paint layers are more sensitive to scratches and corrosion than
thick ones. Aluminium sheet is less sensitive to paint damage than steel
sheet. This is especially important when a product is to be used in maritime
surroundings or in environments with aggressive pollutants. However,
aluminium is sensitive to calcium pollution.
Practical advice:
Aesthetic lifetime is determined largely by adapting products to structures,
and here are some of the factors that should be considered:
• Select aluminium sheet or standing seam sheet steel in coastal areas
or difficult industrial environments.
• Choose the correct coating system for the environment concerned.
• Choose materials for fasteners and installations so that galvanic
corrosion is not possible.
• Design and build so that standing water is avoided.
• Carry out installation carefully to prevent scratches to panels.
• Inspect panels regularly and touch up paint damage immediately.
• Hose down panels that are not washed off by rain.
• Clean guttering regularly.
If you follow this advice you can expect an aesthetic product lifetime of
15–40 years or more.
Annual inspection
In order for effective maintenance to take place an annual inspection of a building’s panel surfaces is necessary. The following should be
surveyed and remedied during annual inspections:
Check
ACTION
Paint condition, signs of chalking, colour changes or surface cracking,
especially in areas where rain is unable to wash the panel clean.
Evaluate the condition and assess whether washing, cleaning, treatment of
edge corrosion, touching-up or repainting is necessary.
Trash in guttering, rain gulleys and other watercourses where the damp
surface has loosened up the paint layer. Blocked watercourses increase the
risk for corrosion and consequential water leaks into the building.
Clean rubbish that binds moisture and corrosive substances from gutters
and watercourses.
Rubbish accumulations on panels. Increased risk of corrosion as the
underlying surface is constantly damp.
Remove rubbish so that the surface of the panel can dry.
Damage to paint layers increases the risk of corrosion. An inspection in
regard to damage to paint surfaces should also take place when the
building is new.
Consider touching-up, repainting or replacement of panels depending on
scope and type of damage.
Loose fasteners, rivets, drill swarf or other metal objects in direct contact
with the roof can cause rust formation.
Remove swarf and/or metal objects.
Faulty or incorrectly installed fasteners. These can cause both leakage and
rust formation.
Replace incorrect fasteners. If threads are stripped, change to a coarser
size.
Edge corrosion on cut edges on overlapping panels and panel ends.
The corrosion may spread if it is not treated in time.
Thoroughly clean damaged edges and paint as described in the section
below.
General information on care and maintenance / Annual inspection – 55
Restoring paint coatings
The restoration of paint coatings includes measures for:
• cleaning the surface layer
• touching up minor damage
• treating corrosion damage
• carrying out repainting of an entire surface.
Cleaning
Rain is often sufficient for keeping panels clean. Dirt deposits that
rain does not manage to wash away can be cleaned with water
and a soft brush or a pressure washer. Be extra thorough with
surfaces that are in so-called rain shadows, i.e. where rain does
not reach to wash the panel clean. Bear in mind that gutters may
fill with leaves and moss etc. and must be flushed clean.
In areas where there is atmospheric pollution a detergent solution
may be required to clean the panels, such as ordinary washing-up
liquid or industrial detergent. Dose according to the manufacturer’s instructions. Rinse afterwards; use a high pressure washer
as necessary.
Some washing advice
1. Stronger solutions than those recommended may damage the
paint.
2. Rinse all detergent away thoroughly.
3. Avoid organic solvents and scouring detergents.
4. Apply detergents from the bottom up;
rinse from the top down.
5. Work carefully: exaggerated washing does more harm than
good.
Touching up
Treating edge corrosion
Edge corrosion may sometimes occur. Cut edges that are exposed
to capillary standing water get small bubbles or flakes closest to
the panel edge when the underlying zinc migrates to the
unprotected panel edge to protect it against corrosion (does not
apply to aluminium). In aggressive environments edge corrosion
may occur and should be treated if the panel is to be kept intact.
In difficult environments it may be appropriate to apply paint
protection to exposed cut edges.
Measures according to items 1–5 below should be taken in the
event of damage.
1. Sand or scrape away all loose paint or corrosion residue.
Roughen a narrow band of the adjacent original paint.
2. If the edge is red rusty, sand or blast away all red rust
down to a clean metal surface.
3. Clean with an alkaline degreasing agent, e.g. 5%
caustic soda with a dish washing liquid as an additive.
4. Paint the cleaned surface with high zinc content anti-rust
primer.
5. Paint with top coat, including the roughened area.
In the case of edge corrosion, make certain that the paint
entirely encompasses the edge (in section, the paint should
resemble the sulphur on a matchstick).
Edge corrosion on overlapping panel joins can be more difficult to
treat in the above manner in that the underside is inaccessible for
cleaning. One solution is to seal the joins, i.e. sand them clean and
then apply a sealing compound above the join.
56 – Restoring paint coatings
Treating scratches
Corrosion may also occur adjacent to scratches in paint layers that
have been caused by snow removal, the installation of antennae,
or during construction.
If a paint layer is damaged to a lesser extent, it can be repaired by
touching up. This action involves using a narrow brush to apply
paint only to the scratched area. Air-drying paint is used. Because
this paint can be expected to change differently over time than
the factory-applied paint, it is important that the paint only be
applied where necessary.
Repainting
Colour changes, flaking, corrosion or a simple desire to change
the colour are examples of reasons for repainting panel surfaces.
Repainting the panels may extend their life significantly. Repainting can be expected to provide an aesthetic lifetime of 10 years or
more.
The repainting of external panels must always be carried out
professionally with proven paint systems. Suppliers of repainting
systems provide instructions for how repainting should be carried
out with the systems concerned. If the work is performed by an
experienced contract painter the latter will possess the knowledge necessary for carrying out the task from inspection to final
painting.
Painting method
Panel surfaces that are to be touched up or repainted must be dry
and free from dirt and grease. Remove any loose paint and other
particles with a scraper and steel brush. Surfaces that are red
rusty must be steel brushed thoroughly or blasted. Clean with
alkaline degreaser, e.g. five per cent caustic soda solution with
the addition of a little detergent. Ideally, use a high pressure
washer. Wash off with clean water and allow the panel to dry.
Before repainting is begun the adhesion of the old paint must be
checked by means of an adhesion test. In this test the edge of a
coin or a key is pressed against the paint layer in the manner of a
chisel. If an imprint is left adhesion is present. If the paint flakes
away adhesion has been lost and the layer of paint must be
removed before repainting begins.
NOTE! In order to reduce the risk of colour deviation the paint
must be mixed carefully.
Do not paint in direct sunlight or in temperatures below five
degrees Celsius. Ideally the temperature should be at least 15
degrees. Relative humidity may not be above 80% and preferably
at a maximum of 65%.
Select the paint system depending on the underlying surface and
damage:
• If the zinc layer is damaged the panel must be primed with
a high zinc content primer.
• When the paint is damaged but the zinc layer is unharmed, the
panel must be painted with a wash primer.
• If the old paint is intact, and there is adhesion between the
zinc and paint layers, the panel can be repainted after normal
cleaning.
Use a brush, roller or spray gun. Use a narrow, soft brush when
touching up small areas.
Further reading
The Swedish Sheet Metal Association and sheet metal industry
have together produced a technical manual (in Swedish) entitled
Byggnadsplåt, material och utförande (Construction panels, materials and design). The booklets 12, Underhåll av plåttak (Maintaining sheet metal roofs) and 13 Målning (Painting) provide in-depth
information on these issues.
Tryck: GTC Print, Luleå
One Plannja telephone number is all you need: +46 10 516 10 00.
Järnforsen, Box 143, SE-570 81 Järnforsen. Tel +46 10 516 10 00. Fax +46 495 501 38. Borlänge, Mats Knuts väg 29, SE-784 50 Borlänge. Tel +46 10 516 10 00. Fax +46 243 765 10.
Finspång, Liebruksvägen 9, SE-612 95 Finspång. Tel +46 10 516 10 00. Fax +46 122 723 90. Göteborg, Flöjelbergsgatan 20 B, SE-431 37 Mölndal. Tel +46 10 516 10 00. Fax +46 31 67 02 90.
Plannja Steinwalls, Fröderydsvägen 17, SE-570 12 Landsbro. Tel +46 10 516 14 30. Fax +46 10 516 14 10.
www.plannja.se
The information in this brochure was valid at the time of publication and is intended to provide a general guide to product application. We reserve the right to make changes to products
through continued development in the course of the year. Stated information and data may not be understood to constitute a guarantee without specific written confirmation.
PLANNJA 2014 JANUARI
Luleå, SE-971 88 Luleå. Tel +46 10 516 10 00. Fax +46 920 942 03. Malmö, Näktergalsgatan 8, SE-235 38 Vellinge. Tel +46 10 516 10 00.
Stockholm, Gräsgatan 15, SE-749 41 Enköping. Tel +46 10 516 10 00. Örnsköldsvik, Hantverkaregatan 38, SE-891 34 Örnsköldsvik. Tel +46 10 516 10 00.

Roofing tile sheet I Roofing sheet and wall cladding

Transcription

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