For a solid ground floor with a screed finish, how are the Kooltherm K3 Floorboard and Thermafloor TF70 boards laid?
The insulation boards are loose laid onto the concrete floor with the necessary water and vapour protection such as a damp proof membrane. The board joints should be tight butted, staggered and laid to a break bond pattern. Before the screed is laid onto the insulation a separating membrane is required. This may be a polythene sheet (not less than 125microns / 500 gauge) or a building paper to BS1521:1972 (1994).
Related Questions
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