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There are a variety of underfloor heating systems available on the market today for use with different flooring surfaces. It is important to understand that the variety is there because those different types of materials require different types of heating systems.  The systems also require different preparatory steps to be taken prior to the actual DIY installation.

There are now generally two main types of underfloor heating systems sold. One is designed for use over concrete, and another that is sold for use over wood. The reason for this is because concrete and wood have two distinctly different heat energy absorption rates, with concrete absorbing heat at a higher rate than wood.

In the case of underfloor heating systems being installed over concrete, it is important that the concrete floor be completely level and properly cured. If it is a brand-new sub-floor than it should be allowed plenty of time to cure naturally; a minimum of one week is recommended. If the finished floor is not level than a thin layer of levelling compound can be used to obtain the desired completely flat surface.

Wooden floors should be thoroughly cleaned prior to any installation of an underfloor heating kit. They should also be level, and if the floor heating system is going to be an under tile heating system then a suitable layer of material should be installed in advance according to the recommendations of the Tiling Federation. Primers and sealers are recommended by adhesive manufacturers for both sub-floor types prior to any DIY underfloor heating installation.