Ground Floors(Thermal)
Prescribed U Value W/m2K(England and Wales - Part L 2006) Extensions
Ground bearing floors
Suspended floors
Under floor heating
Concrete slab
Concrete and beam & block
Timber joists
Thermal Rockfloor
Rockwool Flexi
Thickness (mm)(1000x600)50, 60, 70,80, 90, 100
Thickness (mm)(1200 x600)50, 60, 75, 90, 100, 140(1200 x400)50, 100
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