- Old floor coverings such as hardwood floors, fully glued PVC, dry ceramics and linoleum
- Cement screed (max. residual moisture of 2.0 CM%)
- Dry and floating anhydrite screed (max. residual moisture of 0.3 CM%)
- Magnesite screed (max. residual moisture of 3.0 CM%)
- Have a floor installer measure the residual moisture.
Moist rooms (kitchens, bathrooms, laundry rooms, etc.), saunas, carpet and xylolith are not suitable.
The subfloor must be absolutely dry, level, solid and clean. Small imperfections can be evened out by an underlayment; spots higher than 3 mm per metre need to be ground down, and low spots must be filled in with a levelling compound.
KRONOTEX laminate flooring can be laid over hydronic radiant floor heating and used without problem. Its favourable properties actually help to reduce heating costs. It is only necessary to meet a few requirements:
- Warm mineral subfloors before laying. This will bind excessive moisture.
- Have a heating installer assess the effects of heating.
- Make sure that the surface temperature of the flooring is at least 15°C when it is laid.
- In order to keep moisture and water vapour out, lay a PE membrane underneath (0.2 mm thick). Suitable as acoustic insulation is foamed PE, a KRONOTEX underlayment mat or KRONOTEX laminate flooring with Sound Design acoustic underlayment.
- When starting to heat each winter, gradually increase the floor heating by 5°C each day until it reaches the optimal flow temperature. The temperature of the floor surface should not exceed 26°C.