Flat Roofs - Home Insulation :: Thermal, acoustic, fire and sustainable stonewool insulation from Rockwool Ltd

Warm Flat Roofs

Solutions to minimise heat loss through the roof

Prescribed U Value W/m2K

(England and Wales - Part L 2006)
Extensions 0.20,
Renovation Repair work: 0.25
New build requirement could
range between 0.20 and 0.18

(Republic of Ireland -Technical
Guidance Document 2006 edition) 0.22

(Scotland, with boiler SEDBUK -Part J) 0.25

Above concrete deck

Above timber deck

DuoRock

Thickness (mm)
50, 85, 95, 105,
135, 145, 185