BRE Green Guide Generic Ratings

The BRE Green Guide lists environmental ratings for various types of flat roof construction and the waterproofing system utilised. Ratings are from E (worst) to A+ (best)

Listed below are examples of ratings that our systems can generically achieve when installed on different deck types and support structure used within a specification.  These may also have different ratings depending on the building type.

Bauder Bituminous Membrane Systems

Indicative Build Up	Specification	Element Ref No	Summary Rating
	Warm roof insulation on structural steel trusses, galvanised steel purlins and deck	1212540006	A+
	Warm roof insulation on plywood deck with timber joists	1212540033	A+
	Warm roof insulation with concrete beam and block	1212540042	B
	Warm roof insulation on pre-cast concrete hollow slab with screed	1212540021	B
	Inverted roof insulation with pebble ballast on ply lined profiled steel deck with steel supports	812530026	A

Bauder Single Ply Membrane Systems

Indicative Build Up	Specification	Element Ref No	Summary Rating
	Warm roof insulation on structural steel trusses, galvanised steel purlins and deck	1212540003 (PVC) 1212540003 (FPO)	A+
	Warm roof insulation on plywood deck with timber joists	1212540043 (PVC) 1212540044 (FPO)	A+
	Warm roof insulation with concrete beam and block	1212540029 (PVC) 1212540036 (FPO)	B
	Warm roof insulation on pre-cast concrete hollow slab with screed	1212540023 (PVC) 1212540024 (FPO)	B
	Inverted roof insulation with pebble ballast on ply lined profiled steel deck with steel supports	812530082 (PVC) 812530084 (FPO)	B A

Bauder Bakor Hot Melt System

Indicative Build Up	Specification	Element Ref No	Summary Rating
	In-situ reinforced concrete, polymer modified polyester reinforced bitumen roofing membranes, insulation, paving slabs	812530039	D
	In-situ reinforced concrete, polymer modified polyester reinforced bitumen roofing membranes, insulation, rounded pebbles	812530040	D
	Precast pre-stressed concrete hollow slab with screed, polymer modified polyester reinforced bitumen roofing membranes, insulation, paving slabs	812530073	D
	Precast pre-stressed concrete hollow slab with screed, polymer modified polyester reinforced bitumen roofing membranes, insulation, rounded pebbles	812530074	C

Bauder Cold Liquid Applied Systems

Indicative Build Up	Specification	Element Ref No	Summary Rating
	Warm roof insulation on structural steel trusses, galvanised steel purlins and deck	1212540060	A+
	Pre-cast concrete hollow slab with screed, inverted insulation with pebble ballast	1212540006	C