Total wall thickness: 372mm

U Value: 0.15 W/(m2K)

Breathable to outside, beyond vapour barrier

9: timber cladding – Siberian larch or Cedar

8: treated softwood battens

7: external grade wood fibre insulation – 80mm

6: fermacell boarding

5: structural glulam timber, timber I-joists and wood fibre insulation – 160mm

4: fermacell boarding 3: vapour barrier membrane

2: softwood battens provide service void for electrics and plumbing

1b: plasterboard

1a: in-wall heating panels