Products & Recommendations
For Underfloor Heating Installations
By following these guidelines you should ensure the successful installation
of your wood flooring, however further consultation may be required as
every install has varying conditions.
Product Types and Conditions
Solid wood flooring is suitable for under floor heating with the following
conditions and guidelines:
* Maximum width of 150mm solid wood flooring on a cement
based sub-floor. Maximum width 160mm on ply or flooring grade
chipboard sub-floor of 20mm depth
* If a wider plank is desired use Engineered Oak boards,
same installation and acclimatisation recommendations apply.
* Recommended moisture content of the wood flooring is
8-10%.
* Underfloor heating type: Warm water piped system embedded
into cement screed sub-floor or other underfloor heating
system encapsulated beneath ply or flooring grade chipboard.
* Cement based floors should be sealed with an appropriate
2-part resin membrane. If ply or flooring grade chipboard
then a sealer would not be required.
* Flooring should be full stuck down using a recommended
elaticated PU adhesive such as JEP 120 (see bottom
of page).
* If you are installing a pre-finished solid wood floor
as a floating system it should be laid over a recommended
low-tog underlay such as Duralay Heatflow.
Installation Guide
*After the underfloor heating has been commissioned the heating must
run for a minimum of 21 days to accelerate the evaporation of moisture
in the screed. Ensure that the sub-floor is porous and patching or levelling
of floor is complete prior to installation. The heating should still
be run with other sub-floor compositions such as ply or chipboard.
*Recommended acclimatisation period for the wood flooring is 14 days.
The flooring should be stacked in piles of 10-15m2 or have bearers inserted
between packs of flooring to allow for air circulation at ambient room
temperature.
*Prior to installation moisture and humidity readings should be taken
from the area to be fitted. The relative humidity should be between 45
and 60%. The moisture content of the sub-floor should ideally be below
5%. The application of a 2-part resin membrane is recommended on newly
laid concrete bases.
*Underfloor heating should be turned off for a minimum of 2 days before
installation begins.
*Important: The underfloor heating must remain off for a further 2 days
AFTER installation is complete. The heating should then be built up in
stages from low level to room temperature over a period of 10 days. The
sanding and finishing should be carried out approximately 3 days after
heating has been turned back on.
CFJ Article
Please click here to view a full-sized
PDF version of the below Solid Wood Flooring & Underfloor Heating
CFJ article featuring UK Wood Floors.
JEP120 ADHESIVE
Please click on the below image for a larger
version
