silver standard
Specification as standard:
vapour barrier
rockwool insulation
12mm hardwood faced ply lining
£10 per square ft
12ftx8ft £960
16ftx10ft £1600
prices
gold standard
Specification as standard:
vapour barrier
celotex insulation
12mm tounge and groove lining
£18 per sq ft
10ftx8ft £1440
20ftx10ft £3600
prices