Hydronic under timber heating is suitable for large areas (80 m²+) and can be used in a variety of installations where the timber floor is being installed on battens, secret nailed to board or glued. Hydronic under timber heating is for warming the floor only and has a temperature limit. In most cases supplementary heating is required to warm the room.
REHAU PEX pipe is specific for under floor heating. It is a cross linked polyethylene pipe with oxygen barrier to prevent corrosion.
With under timber hydronic heating we aim for a heat output of 70W/m². A combination of flow and temperature balanced to suit the heat load requirement of a room.
Floor heating pipe is installed after the battens are laid. Battens must have a minimum height of 40mm to allow for insulation, pipe diameter and airspace. The hydronic floor heating pipe is attached to insulation foam and where appropriate, battens require to notches to allow for the pipe to move across the floor.
Floor heating pipe can be installed before (on batten lip) or after (from below) the timber flooring is laid. REHAU diffusion plates are a lightweight aluminium plate that evenly distribute the heat and sit directly against the timber flooring, allowing a better transfer of heat. Insulation is required.
SLAB / SCREED: [FLOATING FLOOR] ** BEST RESULTS**
Floor heating pipe is installed within the screed or slab and a glued, floating or secret nailed floor can be installed over the slab. Different installation methods can be utilised so long as the timber floor is NOT fixed to the slab, preventing damage to the pipe. This screed/slab installation has the best results for under timber heating due to the thermal mass.
Timber flooring must be 'floor heating approved' timber. Speak to you flooring supplier about timbers that are suitable for this application.