Plastic flooring cannot be laid directly on underfloor heating systems. Boards must be laid on the system and these can be floating. It is important that the boards are thin and have good thermal conductivity so that they can effectively transfer the heat upwards, for example, a particle board subfloor with a minimum thickness of 10 mm. A thin layer of screed can also be applied to the underfloor heating system using fiber-reinforced floor screed (approx. 10 mm) before laying plastic flooring. Before applying the screed, the underfloor heating system must be primed to improve the screed’s adhesion to the aluminum foil. Since not all types of primer adhere to aluminum foil, it is important to check that the primer is well dispersed and forms a continuous adhesive film covering the entire surface.
Laying plastic flooring
When the underfloor heating system has been installed and the pressure has been tested, it is time to lay the plastic flooring. The underfloor heating system must be turned off. NB: These are general recommendations for applying the surface layer. If there is any discrepancy, follow the instructions of the manufacturer of the flooring or the accessories.
Make sure that the subfloor is:
- Level and dry
- Clean and free from any floor and other residue
- The floor panels must be securely attached to the subfloor. If a panel is loose locally, wobbles or makes any noise against the subfloor, secure it further with screws or similar