Green Guide 2008 ratings

Building type >	Domestic
Category >	Roof Construction
Element type >	Flat Roof: Cold Deck

	Element number	Summary rating
Vapour control layer, insulation, timber joists, OSB/3, EPDM single ply roofing membrane	1212520006	A+
Vapour control layer, insulation, timber joists, OSB/3, oxidised polyester reinforced bitumen roofing membranes with mineral finish	1212520005	A+
Vapour control layer, insulation, timber joists, OSB/3, PVC single ply roofing membrane	1212520008	A+
Vapour control layer, insulation, timber joists, OSB/3, TPO single ply roofing membrane	1212520007	A+
Vapour control layer, insulation, timber joists, plywood (temperate EN 636-2) decking, building paper, Code 5 100% recycled lead sheet	1212520011	A+
Vapour control layer, insulation, timber joists, plywood (temperate EN 636-2) decking, EPDM single ply roofing membrane	1212520004	A+
Vapour control layer, insulation, timber joists, plywood (temperate EN 636-2) decking, oxidised polyester reinforced bitumen roofing membranes with mineral finish	1212520001	A+
Vapour control layer, insulation, timber joists, plywood (temperate EN 636-2) decking, Polyester cold applied liquid waterproofing membrane system.	1212520010	A
Vapour control layer, insulation, timber joists, plywood (temperate EN 636-2) decking, Polyurethane cold applied liquid waterproofing membrane system.	1212520009	A
Vapour control layer, insulation, timber joists, plywood (temperate EN 636-2) decking, PVC single ply roofing membrane	1212520002	A+
Vapour control layer, insulation, timber joists, plywood (temperate EN 636-2) decking, TPO single ply roofing membrane	1212520003	A+
Vapour control layer, insulation, timber joists, softwood timber boarding, polyester underlay, Code 5 100% recycled lead sheet	1212520012	A+