Insulation of Partitions with Paroc stone wool

Insulation of Partitions
Building Insulation
January 2012
I N S U L AT I O N O F PA R T I T I O N S
Contents
World behind walls .............................. 3
Demands regarding fire insulation .......... 4
Demands regarding sound in buildings ... 6
Why choose PAROC® Stone wool? ........ 8
Dimensioning, fire ............................. 10
Dimensioning, sound ......................... 12
PAROC® solutions, partitions ............... 14
Comments to PAROC® solutions ........... 16
Products ............................................ 17
Design and handling guidelines ........... 18
PAROC® Energywise House™
With the Energywise House™ concept,
Paroc would like to give advice and
instructions about what you can do to
reduce the energy consumption when
building new houses or when renovating.
An energywise solution means that higher
requirements than those stipulated in the
building regulations are fulfilled, which
is a good investment for the future. So,
when you want to build energywise, think
PAROC® Energywise House™.
2
I N S U L AT I O N O F PA R T I T I O N S
World Behind Walls
Comfort
The need of privacy and comfort
in our homes becomes bigger and
bigger due to the fact of the noisier
atmosphere surrounding us.
PAROC® Stone wool is very useful in
connection to this by making more
sound reducing constructions. Stone
wool is used in walls to reduce noise
from your neighbour or from outside.
The insulation can also be used in
floors to reduce the impact or step
sound from flats above.
By partition walls, we mean
separating structures in the form of
inner walls and walls that separate
premises. This brochure is about
airborne sound insulation of partition
walls and how to make our living more
comfortable by good wall solutions. At
the same time this solutions covers also
requirements for fire safety.
Needs
The need of sound reduction in public
buildings has been known for long
time
In houses for living the need
for airborne sound insulation has
increased during the last years.
New machines and loud sound
reproduction equipment have caused
an increased need for constructions
with high sound insulation. Also the
higher fire security needs mean raised
demands for good solutions.
Regulations
and resulting sound and fire insulation
and to present how to design buildings
according to the requirements.
The technical demands are all
covered by the EN regulations, which
means that the requirements are
referring to the same standards all over
Europe.
Added Demands
In some countries the demands
regarding sound insulation also
includes an adoption term called the
C-term. Demands and measurement
results with the C-terms included are
fairer when comparing constructions.
It is however more difficult to make
accurate measurements at low
frequencies. Normally the C-term
means that the construction gets
a lower value of 0-3 dB for both
airborne and for impact sound, but for
constructions intended for high sound
insulation the difference can be much
larger.
Recommendations
The idea of this brochure is to
introduce solutions, with PAROC®
Stone wool, that meet the local
national requirements regarding
fire and sound. Normally the sound
requirements steer the chosen solution.
Fire demands are fulfilled for free!
The values given in this brochure
includes a safety margin, so that they
can normally be achieved at a regular
building site.
Normally the regulations are divided
into classes where the basic demand
easily can be upgraded by the use
of a PAROC® Stone wool slab in
the construction. The aim of this
brochure is to inform about the
connection between product choice
3
I N S U L AT I O N O F PA R T I T I O N S
Demands Regarding Fire Insulation
Rules for fire protection of our
buildings are given from several
authorities.
– “Boverket” rules for building, BBR
– regarding new houses and changes
in buildings are basically meant to
protect human lives.
– Rules from insurance companies
- basically for the protection of
economical values.
– Rules from “Arbetarskyddstyrelsen”,
authority who looks at the safety
for people in work life. Look for
protection during time of building
the house.
– Farming regulations – mainly for
the protection of animals
– Further more there are a lot of
regulations connected to special
types of buildings.
To most of this rules there are many
standardized test methods and to
these connected conditions for the
different classes of constructions
and material that are given in the
regulations. This principal for fire
technical dimensioning is based on the
so called standard fire curve, which
means a medium development for a
fire affecting the building. The method
often gives a solution on the “safe
side”. It is nowadays more and more
common to go more deeply in to this.
Then is a suspected development of
the fire considered (most commonly
including cooling phase) and calculates
the time that the current building
4
is expected to withstand the fire.
To make such a dimensioning of a
building demands a lot of experience
and advanced tools. But this type
of more advanced dimensioning is
normally profitable – at least for bigger
buildings.
In the following there is a short
description given of the head rules
from BBR, chapter 5 Fire protection.
It is limited to the demands that are
connected to stone wool products
from Paroc.
Construction classes R, RE, E, EI and
REI may appear. They are followed by
the time demand given in minutes, 15,
30, 45, 60, 90, 120, 180, 240 or 360.
The classification can be increased
by adding of the letter M when the
construction shall withstand some
mechanical influence and with the
letter C for automatically closing
doors. The term REI 60-M means that
the construction, despite of mechanical
influence shall withstand load,
tightness and temperature demands for
60 minutes.
Fire technical building classes
Buildings are divided into three classes:
Br 1, Br 2 and Br 3. To the class with
the hardest demands – Br 1– are,
among others, all buildings with
three floors or more. The parameters
classifying a building are:
– numbers of floors
– type of use of the building
– area of the building
– fire load
Demands on material and
constructions are various between the
classes.
Fire classified constructions
In BBR are time requirements raised
for different types of constructions in
a building.
– Load carrying ability – R. The
time that the construction is able
to withstand the current load at a
standard fire
– Integrity – E. The time that the
construction keeps tight a standard
fire
– Insulation – I. The time it takes for
the cold side of the construction
to reach a certain temperature,
normally 140 °C mean temperature
raise at a standard fire.
Euro classes
Coating
Class division of coating
These are all requirements for the
material used in a building. More
information about this is to be found
at page 39 of PAROC® Insulation
Theory.
A building is normally divided in
fire cells. Houses for living or offices,
stairs, garage, rooms for heating
equipment, for collection of scrap,
hotel room’s corridors for escaping are
all examples of fire cells.
In general the demand for a
wall to fire cell is EI 30. For a wall
between two flats it is EI 60. When the
building is built with several floors and
the fire load is between 200–400 MJ/
m2 the requirement says EI 120. At a
load over 400 MJ/m2 the wall must
stand EI 240.
I N S U L AT I O N O F PA R T I T I O N S
1
2
3
4
An example of a construction fulfilling
the following demands:
– Fire class EI 60
– Airborne sound class R’w = 40 dB,
R’w + C50-3150 = 36 dB
1
2
3
4
13 mm normal plaster board
95 x 45 mm wooden stud approx. c 600 mm.
95 mm PAROC® eXtra™
13 mm plaster board
5
I N S U L AT I O N O F PA R T I T I O N S
Demands regarding sound in buildings
In the building regulations from
Swedish “Boverket” (BBR) the
following demands are set on
dwellings:
– Minimum airborne sound
insulation
– Maximum impact noise level
– Maximum noise level from
installations
– Maximum reverberation time for
different rooms
– Maximum outdoor and indoor
noise levels due to traffic.
The demands are fulfilled if; at least,
the values for class C in the swedish
standard SS 252 67 are reached, in
some cases including the C-terms.
The terms R´w and L´n,w and R´w
+ C50-3150 and L´n,w +C50-3150 are
defined in SS EN ISO 717. See
Insulation Theory.
In the following a short overview
of the demands in SS 252 67 is given.
Noise level from installations:
Demands
Note that the limits are set for the total
sum of installations.
24 h equivalent level
In bedrooms
LpA ≤ 30 dB
LpC ≤ 50 dB
In living rooms
LpA ≤ 30 dB
In kitchen
LpA ≤ 35 dB
Traffic noise level
Acoustic demands of the classes
• Indoors:
The 24 h equivalent noise level
in a dwelling shall not exceed 30
dBA. The maximum noise level in
a bedroom shall not exceed 45 dBA
during nighttime (22-06).
The same objects are classified in
SS 252 67 as in BBR:
– Minimum airborne sound
insulation
– Maximum impact noise level
– Maximum noise level from
installations
– Maximum reverberation time for
different rooms
– Maximum outdoor and indoor
noise levels due to traffic.
• Outdoors:
The 24 h equivalent noise level on
the outside of the windows shall not
exceed 55 dBA. In special cases, e.g.
due to central locations or where it
is not technically or economically
possible to fulfil this demand, it
is sufficient that the demand is
fulfilled outside the windows of at
least half of the rooms intended for
living. At a patio the equivalent level
of the traffic noise shall not exceed
52 dBA and the maximum level
shall not exceed 67 dBA.
All levels are free field values
Acoustic environment in
dwellings
The demands in BBR are a minimum
level and thus give no guarantee for a
disturbance-free environment. There
is a standard, SS 252 67: “Sound
classification of spaces in buildings Dwellings”, that simplifies the design
of dwellings with higher acoustic
standard.
Classes
Sound with short duration
In bedrooms
In living rooms
In kitchen
6
LpAFmax ≤ 35 dB
LpAFmax ≤ 35 dB
LpAFmax ≤ 40 dB
According to this standard dwellings
can – after measurements and/or
calculations – be rated in a “acoustic
class” which range from A to D.
• Class C is the minimum level in the
building code (BBR)
• Class B mean “good sound
standard”
• Class A mean “excellent sound
standard”
• Class D may be used for buildings
where class C is unreachable due to
e.g. preservation issues.
Increased frequency range
In BBR R´w and L´n,w was earlier used
for airborne sound insulation and
impact noise level respecively. These
summarized values cover the frequency
range from 100 - 3150 Hz and gives
a single number evaluation of the
measured curve by weighting the
results with a reference curve.
Modern electronic equipment
which have been introduced in our
homes, e.g. stereo and TV, can easily
radiate sound that can be disturbing
in the low frequency region, i.e. below
100 Hz.
In the new BBR and in SS 252 67
measurements shall be performed for
an increased frequency range down to
50 Hz.
The new single number terms are
written with adaptation terms, Cterms:
R´w + C50-3150 and L´n,w + CI,50-2500
For an exact definition, see PAROC®
Insulation Theory on our web pages
www.paroc.com
I N S U L AT I O N O F PA R T I T I O N S
Airborne sound insulation, Impact noise level and Reverberation time
Class C (bolded) is the minimum level in new buildings
Airborne sound insulation
Impact noise level
Class
Reverberation time
Class
Class
B
Type of room
A
B
C
D
Type of room
A
B
C
D
Type of room
Between dwelling and
areas outside of dwelling
61
57
53
49
54
58
62
66
Stairs
0.8
1.2
1.5
Corridor
0.6
0.8
1.0
Between dwelling and
external gallery and
entrance and outside
corridor
61*
In dwelling from
stairs, corridor or
external gallery
In flats from other
areas
48
Within dwelling.
64** 68**
57*
Between two rooms
44** 40**
within dwelling (applicable
for dwellings with more than two rooms)
53*
49*
52
56
A
C
60
* Without the C-factor
* Special demands for walls with a door
** Without the C-factor
7
I N S U L AT I O N O F PA R T I T I O N S
Why choose PAROC® Stone wool?
Stone wool is versatile noncombustible thermal insulation
PAROC® Stone wool is the most
versatile and commonly used thermal
insulation material in many European
countries.
PAROC® Stone wool uniquely
combines excellent thermal and sound
insulation properties with a highly
fire retardant material. In addition
to construction, stone wool is used
in conditions that impose extremely
demanding and versatile requirements
on insulation such as the shipping
industry and nuclear power plants.
Excellent fire resistance
properties in constructions
PAROC® Stone wool is made of
stone and can therefore be used as
thermal insulation in applications with
highly demanding fire specifications.
Almost all types of mineral wool are
classified as non-combustible material,
but PAROC® Stone wool has an
exceptionally high melting temperature
of around 1000 °C, providing longer
protection. Therefore, rather than
adding to the fire load, PAROC®
Stone wool offers an effective fire
resistant thermal insulation solution.
Most non-coated PAROC® Stone
wool products are classified in best
Euroclass A1.
Because of its unique fire properties
PAROC® Stone wool can be utilized
as fire insulation and as structural
protective cladding. In structures
insulated with PAROC® Stone wool,
the spreading of any fire is retarded or
prevented altogether.
The behavior of certain construction materials in a “standard” fire. A “standard fire”
simulates the development of temperature of a fire in normal room space.
Life-long insulation material
Retains its form
PAROC®
PAROC® Stone wool does not expand
or shrink, even as a result of dramatic
changes in temperature or humidity.
Therefore no cracks will form at
the joints of the slabs and there is
consequently no risk of heat leakage or
moisture condensation.
Stone wool retains its
thermal insulation properties for the
entire lifetime of a building. PAROC®
Stone wool is a chemically robust
material with a strong resistance to
organic oils, solvents and alkalis.
PA R O C
PROTECT
ION
®
The insu
lation th
at also p
fire and
rotects fr
moisture
om
The right products guarantee
the best results
Of all mineral wools stone wool
possesses the best alkali resistance
properties. This is particularly
important when dealing with the
cement and lime-based mortars
associated with rendered facades.
8
PAROC® PROTECTION is our concept for Nordic designed Stone
wool, a material that has got superior properties when it comes to protection of fire
and moisture. Living in a home with PAROC® Stone wool insulation provides increased
protection against moisture. Stone wool namely does not absorb water particularly well
and due to its high steam permeability, it dries quickly if exposed to water. PAROC® Stone
wool insulation is also non-combustible and is therefore classified in best Euro Class A1.
I N S U L AT I O N O F PA R T I T I O N S
Does not absorb or accumulate
moisture
PAROC® Stone wool does not absorb
or accumulate moisture in a capillary
way, ensuring rapid evaporation in
regular structures. A building insulated
with PAROC® Stone wool stays dry,
ensuring healthy internal air quality
and the longevity of the building.
Extensive research carried out in
Finland by Tampere University of
Technology (Microbial Growth in the
Insulation of Concrete Panel Facades,
1999) and Turku University (Microbial
contamination in rendered insulation
layer of concrete walls, 1999) confirms
that PAROC® Stone wool is a poor
environment for microbe growth.
Sustainable
PAROC®
Stone wool is sustainable
throughout its lifecycle. Stone wool is
a proven, durable insulation material
that provides significant energy saving,
fire protection and excellent sound
insulation properties for a multitude of
applications. Stone wool does not contain any ingredients or chemicals that
prevent or impede recycling.
Paroc – an expert in insulation
As one of the leading thermal
insulation manufacturers, Paroc,
together with the top researchers and
institutions in the field, has developed
considerable expertise in the thermal
insulation sector.
PAROC® Stone wool and indoor
air quality
PAROC® Stone wool is an extremely
clean material and as such has been
selected as the insulation material for
houses built for people with allergies
and respiratory illnesses. The Finnish
Building Information Foundation
and the Indoor Air Association both
classify PAROC® Stone wool as
the best M1 grade in the emission
classifications as it does not pollute
internal air.
Efficient sound insulation
Due to its porous fiber structure and
high density, PAROC® Stone wool
provides excellent insulation against
external noise through walls and
roofs as well as internal noise through
partitions, intermediate floors and
acoustic ceilings.
PAROC® Stone wool withstands very
high temperatures. The image shows a
test sample of the PAROC® UNS product
before and after an EN ISO 1182 noncombustion test where the test sample
is burned at a temperature of 750 °C.
PAROC® UNS are in several of our
markets developed into PAROC® eXtra™
with the same or better fire properties.
Stone wool does not melt even in a fire.
Thus a structure can withstand a fire
considerably longer, which can critically
improve the chance of rescue and limit
damage.
Due to a “breathing”, air-permeable
structure, moisture evaporates quickly in
correctly realized constructions.
9
I N S U L AT I O N O F PA R T I T I O N S
Dimensioning, Fire
The aim of our fire tests for partition
walls has been to cover the normally
used combinations of materials and go
for the minimized construction needed
to fulfill EI 30, EI 45, EI 60, EI 90 and
EI 120.
The tests were made due to EN
1363-1:2001 and EN 1364-1:2001 at
the testing institute of ITB in Warsaw.
Test reports No:
LP-1079 1/04 – LP-1079 7/04
At the same testing in Warsaw we
also made a test of a glass wool product
at lower density. The density was
about 17 kg/m3. The result was just 38
minutes for an exact equal construction
as the one above with EI 60. One
conclusion from this is that the density
for to reach fire requirement is limited
to 28 kg/m3. This means at least
PAROC® eXtra™.
The product PAROC® WAS 50
is sometimes recommended for this
type of walls. This is because of old
tests and the difference is that it brings
some extra stability to the stone wool
which means less shrinking at high
temperatures. The new tests done are
not demanding this product but the
choice of it is a solution even more on
the safe side.
There has been a lot of fire test over
the time and the result of these is now
days used as background for calculation
of needed construction to fulfill the
demands. One of these methods is
described in PAROC® Insulation
theory. It is called addition method and
the layers in the construction are added
to a total fire resistance value.
!
10
NOTE: Use the same dimensions
and solutions for all connecting walls
in the building
Minimum solution for EI 30:
1 layer of normal, 12.5 mm, Normal plasterboard
Steel stud, 42 mm, c 600 mm
PAROC® eXtra™, 42 mm
1 layer of normal, 12.5 mm, Normal plasterboard
Minimum solution for EI 45:
1 layer of normal, 12.5 mm, Normal plasterboard
Steel stud, 66 mm, c 600 mm
PAROC® eXtra™, 66 mm
1 layer of normal, 12.5 mm, Normal plasterboard
Minimum solution for EI 60:
1 layer of normal, 12.5 mm, Normal plasterboard
Steel stud, 95 mm, c 600 mm
PAROC® eXtra™, 95 mm
1 layer of normal, 12.5 mm, Normal plasterboard
Minimum solution for EI 90:
2 layers of normal, 12.5 mm, Normal plasterboard
Steel stud, 66 mm, c 600 mm
PAROC® eXtra™, 66 mm
2 layers of normal, 12.5 mm, Normal plasterboard
Minimum solution for EI 120:
1 layer of Fire plaster board
1 layers of Normal, 12.5 mm, plasterboard
2 x Steel stud, 66 mm, c 600 mm (10 mm air gap
between studs)
2 x PAROC® eXtra™, 66 mm
1 layers of Normal, 12.5 mm, plasterboard
1 layer of Fire plasterboard
• The wall may be maximum 3000 mm high
• The wall can be made thicker, fully insulated
• Wooden stud at the same dimension can be used instead
• PAROC® Stone wool at densities up to 90 kg/m3 may be used
• The studs may be placed by a shorter distance than 600 mm
• Plasterboards may be added outside and/or inside the construction
• The normal plasterboard can be changed to a fire protection plasterboard
• Stud dimensions: – 42 mm covers studs between 42 and 50 mm
– 66 mm covers studs between 66 and 75 mm
– 95 mm covers studs between 95 and 100 mm
Normally the sound requirements
are steering and in those cases the fire
regulations will be covered as well.
There may be situations where only
a fire classified solution is requested.
In those cases it is possible to use
the minimum solutions in the tables
above.
I N S U L AT I O N O F PA R T I T I O N S
1
2
3
4
An example of a construction fulfilling
the following demands:
– Fire class EI 90
– Airborne sound class R’w = 44 dB,
R’w + C50-3150 = 40 dB
1
2
3
4
2 x 13 mm plaster board
70 mm steel profile
70 mm PAROC® eXtra™
2 x 13 mm plaster board
11
I N S U L AT I O N O F PA R T I T I O N S
Dimensioning, Sound
By partition walls, we mean separating
structures in the form of inner walls
and walls that separate premises. For
residential premises, the walls should
be insulated to allow for privacy and
at the same time dimensioned for
better fire safety. However, in certain
situations extra insulation is required
in order to reduce heat transport.
The choice of insulation products
recommended is therefore in respect of
sound insulation.
By sound class, we mean the
airborne sound insulation (R’w) that
can be expected between the spaces
where the separating structure is
used. In order to achieve the stated
value, the general structure and
connections must be carried out in
accordance with the outer layer and/
or batten supplier’s instructions.
The class limits of insulation vary
somewhat from country to country.
The laboratory recorded measurements
of the construction solutions below
are at least 3 dB over the stated values
to include a normal degree of sound
transmission through the flanking
constructions.
1
2
3
4
12
An example of a construction
fulfilling the following demands:
– Fire class EI 90
– Airborne sound class R’w = 44 dB,
R’w + C50-3150 = 40 dB
1
2
3
4
2 x 13 mm plaster board
120 x 45 wooden stud c 600 mm
120 mm PAROC® eXtra™
2 x 13 mm plaster board
I N S U L AT I O N O F PA R T I T I O N S
Table
Examples of how different activities can be
heard and experienced at different sound
insulation values, R’w, between the rooms.
The table has no connection to any demands.
R’w
Normal
Speech
Loud
Speech
Clearly audible
Shouting
TV, Radio
Normal level
TV, Radio
High level
TV, Radio,
Extreme level
Audible
Example
of Rooms
30
Office
35
Office
40
Schools
44
Schools
48
Schools
52*
Apartments
56
Apartments
60
Spec. rooms
64
Spec. rooms
* Recommended for rooms where privacy is required
Paroc has made calculations regarding
the sound reduction for several
partitions. The regulations, EN 12354,
allows this way of dimensioning. It
is well-known that the insulation has
an improved effect to the airborne
sound reduction. The first 30 mm
are the most important. A completely
filled wall gives slightly higher sound
insulation. The stone wool should be
placed over the whole wall area. Paroc
recommends to use fully insulated
constructions to secure the installation
and better meet the fire regulations.
To completely fill the lower part
only gives signifcantly lower airborne
sound insulation than for an evenly
distributed insulation layer.
If the density of the mineral wool
product is between 25 and 90 kg/m3
the values will be as described in this
brochure. At mineral wool densities
below 17 kg/m3 the values will be
reduced by about 3 dB, a difference
which clearly can be heard.
In the following you can find some
solutions covering the highest, medium
and lowest demands. See also page
14-15, where constructions fulfilling
Swedish demands are to be found.
Examples of constructions needed to meet some of
the R´w values above
Class
R’w
Construction
Description
Total thickness
mm
36
12.5 mm plasterboard
70 mm steel stud
≥ 30 mm PAROC® eXtra™
12.5 mm plasterboard
95
44
2 x 12.5 mm plasterboard
Steel stud 95 mm, c 600
≥ 30 mm PAROC® eXtra™
2 x 12.5 mm plasterboard
145
56
2
2
2
2
190
x
x
x
x
12.5 mm plasterboard
70 mm steel stud, c 600
70 mm PAROC® eXtra™
12.5 mm plasterboard
Examples of constructions needed to meet the values above
with the C-factor included
Class
R’w+C50-3150
Construction
Description
Total thickness
mm
36 C
2 x 12.5 mm plasterboard
70 mm steel stud
≥ 30 mm PAROC® eXtra™
2 x 12.5 mm plasterboard
120
44 C
2 x 12.5 mm plasterboard
2 x 70 mm steel stud, c 600
95 mm PAROC® eXtra™
2 x 12.5 mm plasterboard
145
56 C
3
2
2
3
215
x
x
x
x
12.5 mm plasterboard
70 mm steel stud, c 600
70 mm PAROC® eXtra™
12.5 mm plasterboard
13
I N S U L AT I O N O F PA R T I T I O N S
61 C
PAROC® Solutions, Partitions
Stair of demands: A-, B- and C-classes, R´w + C50-3150 requirements for Sweden:
A-class: Between dwelling and areas outside of dwelling
A-class: Between dwelling and external gallery and entrance and outside corridor
61 C
57 C
C-class: Between dwelling and areas outside of dwelling
C-class: Between dwelling and external gallery and entrance and outside corridor
53 C
49 C
B-class: Between dwelling and areas outside of dwelling
B-class: Between dwelling and external gallery and entrance and outside corridor
D-class: Between dwelling and areas outside of dwelling
D-class: Between dwelling and external gallery and entrance and outside corridor
PAROC® Solutions
Sound Level
Construction
Description
Total thickness
Fire classification
mm
This construction
61 C
3 x 12.5 mm plasterboard
2 x 95 mm steel stud, c 600
95+120+95 mm PAROC® eXtra™
3 x 12.5 mm plasterboard
385
EI 120
57 C
3
2
2
3
x
x
x
x
12.5 mm plasterboard
70 mm steel stud, c 600
70 mm PAROC® eXtra™
12,5 mm plasterboard
235
EI 90
53 C
2
2
2
2
x
x
x
x
12.5 mm plasterboard
70 mm wooden stud, c 600
70 mm PAROC® eXtra™
12.5 mm plasterboard
210
EI 90
49 C
2 x 12.5 mm plasterboard
2 x 70 mm wooden stud, c 600
≥ 30 mm PAROC® eXtra™
2 x 12.5 mm plasterboard
210
EI 90
!
14
NOTE: The values given are valid
for the construction in a building.
The single construction measured in
laboratory may give better values.
I N S U L AT I O N O F PA R T I T I O N S
Stair of demands: A- and B-Classes R´w requirements for Sweden:
44
40
A-class: Between two rooms within a dwelling
B-class: Between two rooms within a dwelling
PAROC® Solutions
Sound Level
Construction
Description
Total thickness
Fire classification
mm
This construction
44
2 x 12.5 mm normal plasterboard
95 mm steel stud, c 600
≥ 30 mm PAROC® eXtra™
2 x 12.5 mm plasterboard
145
EI 90*
40
2 x 12.5 mm plasterboard
70 mm steel stud, c 600
≥ 30 mm PAROC® eXtra™
2 x 12.5 mm plasterboard
120
EI 90*
* Fully insulated by PAROC® eXtra™, 95 or 70 mm
15
I N S U L AT I O N O F PA R T I T I O N S
Comments to PAROC® solutions
The calculations presented in
the tables above are performed
using airborne sound insulation
measurements, calculations and
estimations. A security margin of
minimum 4 dB is used in most of the
cases. Some constructions are known
to fulfill a certain insulation class,
and the security margin can in special
cases be lower. The rooms used in the
calculations are situated next to each
other and have the size L x W x H =
5 x 4 x 3m each. The widths of the
common wall influence the sound
insulation, but if normal room sizes
are used, up to at least twice the room
width, the calculations still hold.
The other walls in the rooms have
sufficient airborne sound insulation to
qualify as walls between dwellings, R’w
= 63 dB. They are lightweight walls
made of metal studs and plasterboard.
The flanking transmission is
included in the calculations and
the flanking transmission affect
16
Recommendation: To make
installation more simple
please choose one solution
for the whole building.
the results for heavier construction
classes, from classes 56 and 56C and
upwards. The values for the total in
situ sound insulation, R’w, assume
that the flanking constructions
are chosen appropriately. This also
includes ventilation, plumbing and
electrics. A single too weak flanking
construction can result in severely
reduced sound insulation. All
constructions with R’w > 55 dB should
be designed carefully.
The general difference for the
reduction index with and without
the C50-3150 term is one class, i.e. a
construction found in class 48 is also
often found in class 44C.
To add an extra set of studs,
mineral wool and plasterboards to the
face of an existing wall to improve its
sound insulation does only work for
medium to high frequencies. The R’w
value can be increased in this way,
possibly up to 10 dB, but often no
improvement at all is found when the
C50-3150 term is included, i.e., this kind
of wall lining is often useless for low
frequencies.
For buildings aiming at higher
sound insulation classes it is imperative
that detailed calculations of both
the airborne and the impact sound
insulations are performed early in the
design process. It is almost impossible
to improve the insulation to a large
degree after the house is finished.
I N S U L AT I O N O F PA R T I T I O N S
Product Information
PAROC® eXtra™
A multi-purpose general insulation for thermal insulation of
external walls, ceilings and Ross floors and for sound and
fire insulation for internal walls and intermediate floors. Its
resiliance makes it easy to handle and install.
Width x Length
610 x 1220 mm
Thickness
42 - 150 mm
Other sizes can be supplied on request.
Packaging
Plastic package or packages on a pallet.
Lambda, declared, λD
In accordance with EN 13162
0.036 W/mK
Air permeability, l ⊥
In accordance with EN 29053
95 10-6 m2/sPa
Reaction to Fire
In accordance with EN 13501-1
A1
Water absorption (short term), declared, WS
≤1 kg/m2
Water absorption (long term), declared, WL (P) ≤3 kg/m2
Appr. weight/m3
30 kg/m3 ± 10%
More information on our website www.paroc.com
17
I N S U L AT I O N O F PA R T I T I O N S
Design and handling guidelines
General
Filling
Handling and storing
In order to achieve the stated value,
the general structure and connections
must be carried out in accordance
with the outer layer and/or the batten
supplier’s instructions.
The sound insulation function will be
affected by how well the space to be
insulated has been filled. PAROC®
eXtra™ products are fitted between
beams and studs with an overhang of
5-10 mm so as to obtain a good filling
without any cracks or gaps.
The overhang is important for the
function of the structure, both in
terms of sound insulation and fire
safety. Avoid using small pieces,
(<200 mm), as this will increase the
risk of gaps occurring. The thickness
of the standard slabs can be fitted to
the standard measurements of the
timber or steel frames. The width can
be adapted to the stud distance in
question.
Insulation is a very important product
for buildings and should be handled
with care so as not to jeopardize its
functioning. Storing on site until the
time it is to be fitted should therefore
be carefully planned. The totally sealed
plastic packaging protects the product
against temporary weather stresses.
The insulation should always be
covered when stored outside for longer
periods. The packages are stowed so
that the slabs stand on their edges.
If the insulation becomes damp, the
packages should be opened and the
slabs dried indoors before they are
fitted into the structure. Never use wet
insulation. If the insulation becomes
wet after fitting, it must be secured
until it has dried.
Cutting
When cutting insulation slabs a
PAROC® Knife and a straight edge or
a cutting table is used. When a lot of
cutting is required, cutting tables are
excellent tools that allow achieving the
correct angles. These can be quickly
adjusted to other sizes and angles.
Choose the right size of the slab,
adapted to the type of stud, in order to
minimize the need of cutting.
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I N S U L AT I O N O F PA R T I T I O N S
1
An example of a construction fulfilling
the following demands:
– Fire class EI 90
– Airborne sound class R’w = 48 dB,
R’w + C50-3150 = 44 dB
2
3
4
1
2
3
4
2 x 13 mm plaster board
70 mm steel stud, doubled
95 mm PAROC® eXtra™
2 x 13 mm plaster board
19
Paroc Group is one of the leading manufacturers of mineral wool insulation products
and solutions in Europe. PAROC® products and solutions include building insulation,
technical insulation, marine insulation, structural stone wool sandwich panels and acoustics
products. Paroc has production facilities in Finland, Sweden, Lithuania and Poland, and
sales and representative offices in 13 countries across Europe.
Building Insulation produces a wide range of
products and solutions for all traditional building
insulation. The building insulation is mainly used for
thermal, fire and sound insulation of exterior walls, roofs,
floors, basements, intermediate floors and partitions.
Sound absorbing ceilings and wall panels for interior
acoustic control, as well as industrial noise control products,
are available in the range.
Technical Insulation is used for thermal, fire and sound
insulation in building techniques, industrial processes and
pipe work, industrial equipment and ship structures.
PAROC ® fire proof panels are lightweight steelfaced panels with a core material of stone wool.
PAROC® panels are used for façades, partition walls and
ceilings in public, commercial and industrial buildings.
The information in this brochure describes the conditions and technical properties of the disclosed products, valid
at the time of publication of this document and until replaced by the next printed or digital version. The latest
version of this brochure is always available on Paroc web site.
Our information material presents applications for which the functions and technical properties of our products
have been approved. However, the information does not mean a commercial guarantee, since we do not have full
control of third party components used in the application or the installation.
We cannot warrant the suitability of our products if used in an area which is not provided in our information
material.
As a result of constant further development of our products we reserve the right to make alterations to our
information material.
PAROC and red and white stripes are registered trademarks of Paroc Oy Ab. © Paroc Group 2012
2058BIEN0112
PAROC GROUP
P.O.Box 47
FI-00621 Helsinki, Finland
Phone +358 46 876 8000
www.paroc.com
A MEMBER OF PAROC GROUP