miraflow

TECHNICAL SPECIFICATION
Mira Thermoplan is supplied as a dry product consisting of a special cement, sand,
bonding agent, plastic, fibre and additives.
Material consumption:
1.6 kg powder/m2/mm layer thickness
Layer thickness:
5-50 mm
Surfacing:
The hardened mix will accept most types of floor covering, e.g. pvc, linoleum,
ceramic tiles, parquet, textile carpeting. Surface finishing with floor paint can
be used on areas where traffic is moderate.
Water resistance:
The hardened mix has good moisture resistance characteristics,
but is not suitable for use outdoors or in water tanks, swimming pools, etc.
Bending/tension:
approx. 9 MPa
Compression strength:
27 MPa
Adhesion:
> 3.0 MPa
Contraction:
0.3 - 0.5 %
Opening time:
15-20 minutes
Working time:
30 minutes
Hardening time:
Will bear light pedestrian traffic 2 hours after application.
Further surface treatment after min. 6 hours.
Dry weight by volume:
1.7 kg/litre
Wet weight by volume:
1.9 kg/litre
Ph: approx.
11 (wet state)
Protective clothing:
See product data sheet
Flow characteristic:
135-145 mm (mira flow test)
Fax orders to
01444 247121
All orders will be confirmed by telephone
Heat Mat Limited, 8, Ashwyn Business Centre, Marchants Way, Burgess Hill, West Sussex RH15 8QY • Telephone 01444 247020
Mira Thermoplan
APPLYING THERMOPLAN
CONCRETE, PLASTER, CERAMIC TILES, THERMAL TILEBACKER BOARDS
OR PAINTED SURFACE
THERMOPLAN
Thermoplan must be applied immediately after mixing. First prime the floor (See Priming section above), let the primer fully dry,
and then apply Thermoplan directly onto the primed surface. Although a certain amount of self levelling will take place, if this is
not sufficient the compound can be smoothed and spread into corners with a smooth spatula or similar. The compound can be
applied to a thickness of between 5 and 50mm on concrete, plaster, ceramic tiles or painted surfaces subject to your own
requirements. On thermal tilebacker boards a thickness of between 10 and 50mm is recommended.
WOODEN FLOORS
Thermoplan must be applied immediately after mixing. If using on chipboard, plywood or floorboards, first ensure that there are
no gaps between the boards which the levelling compound can seep between. Next prime the floor (See Priming section above)
and then apply Thermoplan directly onto the primed surface. Although a certain amount of self levelling will take place, if this is not
sufficient the compound can be smoothed and spread into corners with a smooth spatula or similar. The compound can be applied
to a thickness of between 5 and 50mm.
ONTO FLOORS WITH UNDERFLOOR HEATING
fig.1
fig.2
Thermoplan is a fibre-reinforced self-levelling
floor compound specifically designed for use with
underfloor heating. Thermoplan can be used in
thicknesses of 5-50mm, (a minimum of 8mm is
recommended with underfloor heating), and can
accept a wide variety of floor coverings such as
carpet, bonded wooden floors, vinyl and tiles.
The compound is fast drying and further surface
treatment can be applied six hours after being laid.
The compound will naturally smooth the surface on
which it is being applied and if required can be used
in a wet room application to create a fall to a drain
or similar. The compound can be applied with hand
tools or via a mixing pump.
Subfloor Preparation (see fig.1):
The condition of the surface which Thermoplan is being applied onto is
essential to the strength of the finished floor. The surface must be solid,
cohesive and free from dust, dirt, grease etc. If there is any cement slurry
film or weak spots in a concrete base these must be cut or ground away.
For a wooden subfloor such as floorboards, plywood or chipboard you
must ensure there is no movement in the floor as any movement may
cause the compound to crack. Loose dust is best removed with a vacuum
cleaner, whereas grease, oil, etc. on concrete, painted surfaces or similar
should be removed using either a solvent cleaner such as Mira 7110 base
cleaner, high pressure flushing or another effective cleaning method.
If underfloor heating is being laid you must ensure that the subfloor is smooth
and level prior to laying the underfloor heating to ensure an even height of
levelling compound is achieved above the heating elements.
2
fig.3
fig.4
Thermoplan is specifically designed to be used with underfloor heating mats and cables and its formula has been improved compared
to normal levelling compounds so that it conducts heat more efficiently. The compound must cover the heating cables by a minimum
of 5mm to allow an even distribution of heat which means that when used with our 3mm heating mats beneath tiles, the total thickness
of compound required can be as little as 8mm. If the underfloor heating is being used beneath any other surface such as linoleum or
wooden flooring the compound must cover the cables by a minimum of 10mm. Under no circumstances should you use the underfloor
heating to dry out the Thermoplan as this will result in damage to the heating system and the compound itself.
fig.5
Thermal Tilebacker Boards (see fig. 2-3):
Thermoplan is not suitable for use with heating ribbons such as Heat Mat’s Wooden Floor Heating, or with any film based heating system,
as these products do not offer a secure basis for levelling compounds or tile adhesive and the floor may crack after sustained use.
If using Heat Mat Thermal Tilebacker Boards these should be secured
onto the subfloor in accordance with the appropriate recommendations.
Priming (see fig. 4):
Priming should not be done until the surface is prepared and dry enough
that the primer adheres. Porous surfaces such as concrete must be treated
with one part 4180 primer thinned with three parts water. Thermal tilebacker
boards should be treated with one part 4180 primer to one part water. In both
cases it must be worked well into the surface with a brush. On impermeable
materials such as painted surfaces and ceramic tiles concentrated 4180
primer must be applied followed by dry Thermoplan powder sprinkled and
brushed into the wet primer. Wooden floor surfaces must be primed with
concentrated 4180 primer.
BUILDING UP A FALL
The mix, with reduced water content, must be applied along the wall. It will automatically flow towards the floor drain.
You should prevent the mix from flowing into the floor drain by using a retainer on the floor, such as Mira self-adhesive
foam strips. When the mix has hardened so that it can be walked on with care, the fall can be adjusted and rendered
to match the floor drain.
If Thermoplan is applied in several layers, primer must be applied between
each layer. Between 0.2 and 0.5 litres of 4180 primer will be needed per
square metre depending on the porosity of the surface being primed. The
o
minimum ambient temperature primer can be applied in is 6 C, while the
o
ideal temperature is between 10 and 18 C.
FINISHING
Further surface treatment is possible when the Thermoplan has hardened and dried. The drying time will depend on the
ambient room temperature and humidity. In normal circumstances the Thermoplan has sufficiently dried for ceramic tiles
to be laid between six and twelve hours after application. At least 18 hours should be allowed after a mix has been applied
before damp proofing with 4120 sealer or 4400 multicoat. When laying vinyl, linoleum or bonded wooden floors the
manufacturer’s instructions should be followed.
Mixing (see fig. 5):
Thermoplan should be mixed with approximately 4.5 litres of water per 25kg
of Thermoplan. Mixing is preferably done with an electric mixer or a mixing
pump. The mixture must be worked for at least two minutes until it becomes
of a smooth consistency. If the mixture is to be used in building up a fall in
the floor, the quantity of water can be reduced to 4 litres per 25kg of
Thermoplan. By using less water the working time and the flow capacity
of the mix are reduced.
You can use the Mira flow tester to ascertain that the correct amount
of water has been added to the Thermoplan during mixing.
(Please see the Mira Flow Test section).
MIRA FLOW TEST
The Mira flow tester allows you to ascertain that the correct amount of water has been added to the Thermoplan
during mixing. Place the Mira flow tester on a primed flat surface. Fill the tester to the top with Thermoplan and
then lift the tester so that the measured amount of Thermoplan is able to flow freely. When the compound has
flowed completely from the tester on its own accord, measure the diameter to which it spreads. With the correct
amount of water added, the diameter will be between 135 and 145mm.
Thermoplan remains workable for approximately 30 minutes
o
in an ambient temperature of 10-18 C.
Call 01444 247020 for more information or visit www.heatmat.co.uk
THERMOPLAN
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