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RECOMMENDED U-VALUES FOR DOMESTIC BUILDINGS

ENGLAND - Current Building Regs 2018

ElementNew BuildExtensionRenovation
WALL0.180.280.3
FLOOR0.130.220.25
PITCHED ROOF – CEILING LEVEL0.130.160.16
PITCHED ROOF – RAFTER LEVEL0.130.180.18
FLAT ROOF0.130.180.18

SCOTLAND - Current Building Regs 2018

ElementNew BuildExtensionRenovation
WALL0.150.170.22
FLOOR0.130.150.18
PITCHED ROOF – CEILING LEVEL0.100.110.15
PITCHED ROOF – RAFTER LEVEL0.100.130.18
FLAT ROOF0.100.130.18

WALES - Current Building Regs 2018

ElementNew BuildExtensionRenovation
WALL0.160.210.3
FLOOR0.110.180.25
PITCHED ROOF – CEILING LEVEL0.110.150.16
PITCHED ROOF – RAFTER LEVEL0.110.150.18
FLAT ROOF0.110.150.18

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