Thermal Insulation

Thermal resistance properties are from laboratory tests on 120mm thick panels.

ConstructionAdditional coat or liningTotal Thickness (mm)R(m2K/W)
Single leaf Rapidwall unfilled None 120 0.36
Single leaf Rapidwall filled
with 20MPa normal concrete
None 120 0.25
Single leaf Rapidwall filled
with lightweight concrete
None 120 0.6
Single leaf Rapidwall filled with
35kg/m3 and R2.5 Rockwool batts
Standard texture finishing coats (ASTEC) on both external faces 120 1.63