Trouble glazing | Features

Proposed changes to the U-values for windows
Current value	3.5 W/m^{2^°C}
2002 value	2.2 W/m²°C
2004 value	2.0 W/m²°C

How windows will have to be glazed to meet the proposed changes in the Building Regulations
U-value (W/m²°C)	Timber or PVCu frame	Metal frame with 8mm thermal break
2.0	High-performance, soft-coated glazing	Triple glazing
2.2	Soft-coated doubel glazing	High-performance, soft-coated doubel glazing
2.5	Hard-coated doubel glazing	Soft-coated double glazing, or argon gas filled