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Rockwool Flexi - U Values
Warm/Hybrid frame - external cavity wall
Prescribed U Value W/m2K
(England and Wales) Extensions: 0.30
Renovation & Repair work: 0.35
New build requirement could range between 0.28 and 0.25
(Republic of Ireland) 0.27
(Scotland, with boiler SEDBUK ) 0.30
U Values (W/m2K)
Warm/hybrid timber frame cavity wall with Rockwool Flexi insulation fully filling studs and 30 or 40mm Rockwool HighPerformance Partial Fill to face of sheathing.
Internal finishes: (a) 1 layer plasterboard (b) 2 layers plasterboard
HP
Partial fill | 40 mm | | | Internal finish | a | b | Thickness
mm | | | | 90 | 0.28 | 0.27 | | 100 | 0.26 | 0.26 | | 120 | 0.24 | 0.23 | | 140 | 0.21 | 0.21 |
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Rockwool Limited, Pencoed, Bridgend, CF35 6NY, UK
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