U Valves

Wall	Typical U values (w/m2 0C)
105mm single brick	2.10
265mm cavity brick - block insulated	0.96
150mm solid concrete	0.90
Timber frame panels with 100mm insulation	0.31
Windows
Single Glazed	5.60
Double Glazed	3.20
Floor
l05mm concrete with 50mm screed-suspended	2.00
Timber floor - suspended	1.70
Solid floor on earth	0.75
Roof
Plaster Board and l00mm insulation	0.31
l50mm concrete with insulation and bitumen	0.85