Due to special
manufacturing technique Karelia parquet is
suitable to be installed on a floor with
underfloor heating.
Prior to installation it has to be decided
whether Karelia parquet will be laid as a
floating floor or glued to the subfloor.
Both methods are from the technical point of
view possible, but a glued floor transmits
heat better into the room. The capacity of
heat transmission varies (see surface
temperature diagrams).
In order to avoid uneven swelling and
shrinking of the floor (flooring material)
the total area of the woodflooring shall be
heated.
Beech and birch are not recommended for
floors with underfloor heating due to higher
movement of timber based on timber's own
properties.
Please pay attention to very important
points in connection with underfloor
heating, which are not contained in our
standard installation instructions.
1.Prior to installation
Allow two weeks' standing time for concrete
to dry out. Switch on the heating starting
at minimum and raising the temperature daily
by approx. 5 degrees C until the heating
reaches two-thirds of maximum. This action
has to be taken both in summer and winter.
Ventilate the room well.
Run the heating at maximum during the last
few days before installation. Duration 1 day
per 1 cm cast form thickness.
Two days prior to the installation switch
off the heating or in cold weather reduce it
to 15-18 degrees C surface heat.
2. Floating installation
Check that the surface is level (see
installation instructions)
Check that the subfloor is sufficiently dry;
80 % of relative moisture or 3,0 weight-%.
Spread 0,2 mm thick plastic membrane on the
subfloor overlapping 200 mm or with joints
taped.On top of the membrane, spread a
corrugated cardboard or other porous
soundproofing material (NB: a cork granulate
felt or cellular plastic are not suitable
because they add to heat insulation).
On top of the membrane, spread a corrugated
cardboard or other porous soundproofing
material (NB: a cork granulate felt or
cellular plastic are not suitable because
they add to heat insulation).
Lay the Karelia according to our
installation instructions.
Fix the skirting boards in place with screws
or nails and screw down thresholds and apron
pieces. When fixing thresholds allow 10 mm
gap around fixing screws.
3. Installation on the subfloor by gluing
We recommend that the gluing should be done
by a professional installer.
Switch off the underfloor heating about one
day prior to the installation.
Check that the subfloor is dry enough, 60 %
of of relative moisture or 1,5 weight-% of
concrete mixture content.
Check that the subfloor is absolutely level,
maximum deviation allowed ± 1,0 mm within
the space of 2 metres.
If the surface has to be levelled, make sure
that the levelling compound has completely
dried.
Glue the Karelia onto the surface by using a
5 mm comb spreading spatula and a
bitumastic-based adhesive having a very high
dry matter content, min. 73 weight-%.
Suitable glues are PVA, two-component or
resin. Glue the boards on tongue and groove
according to installation instruction. Glue
application at the most 500 gr/m2.
To hold the fitted parquet down while it
dries, place weights on the surface. If
available, unused packages are ideal for
this purpose but any similar object will
suffice. Pay special attention to areas
where there is likely to be heavy foot
traffic, i.e. entrances and walkways. Remove
the weights when the glue has dried. If
there are traces of glue stain on the
surface, remove immediately with a damp
cloth.
4. After the installation
Wait 12-24 hours and then switch on the
underfloor heating. Raise the temperature so
that a maximum temperature is achieved
within five days.
Then adjust the underfloor heating so that
the wooden floor surface temperature does
not exceed + 27 ° C.
The ambient air humidity must be kept at
40-60 %. Recommended room temperature is 18
degrees C to 24 degrees C. If these
conditions are not observed, abnormal
movement may occur. The manufacturer, seller
or installer cannot accept any
responsibility for such occurrences, nor are
they covered by the guarantee.
For additional information, contact your
retailer.
Karelia wood flooring can be installed with
electrically heated floors or floors with
warm water circulation systems. Karelia can
be laid either as a floating floor or glued
to the subfloor.
Heat emission of bare concrete floor, wood
flooring glued to the subfloor and floating
wood flooring, when the room temperature is
+ 20 ° C.
Surface temperature of bare concrete floor,
wood flooring glued to the subfloor and
floating wood flooring, when the room
temperature is + 20 ° C. |
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