An underfloor heating system is effectively ‘planted’ inside a screed. The installation of underfloor heating should not be attempted before the room is protected from external elements. It is crucial to install underfloor heating systems and screed correctly. Otherwise, problems can occur, such as cracks in the upper surface. This is especially the case with stone or tiled surfaces.
Other issues to avoid include inconsistent surface levels. Although it is possible to install UFH and screed on a DIY basis, if you are unsure, it is always best to secure the services of a professional underfloor heating systems specialist. Mistakes and substandard heating issues are invariably expensive to remedy.
Before installation of underfloor heating pipework and associated movement joints, it is important to make sure the surface is completely smooth to accommodate the screed. Be sure to select the most appropriate type of screed (semi-dry or liquid) and have a clear idea of the height necessary to maximize heat efficiency.
The underfloor heating piping or cables should not be wound too tightly so that it restricts the flow of water. Instead, popular layouts should be considered, such as linear, serpentine, and spiral. Insulation is equally important and keeps the efficiency of the system high to prevent lost warmth.
Once the screed has been applied over the UFH piping, the ‘commissioning process’ can begin. Do not attempt to walk on the screed until it has completely dried. Instead, wait for the screed to cure before turning on the heating. After the curing process, the UFH system can be switched on to further assist with drying. Once the screed has completely dried and set, floor finishes can be installed, such as tiling, laminate, hardwood boards, and carpets.