Green Guide Ratings

Achieving A+ ratings in the BRE Green guide

Credits are available for the specification of generic A+ rated materials in the BRE Green Guide to Specification (4th edition). Generic A+ ratings* (having the lowest environmental impact) for specific building types (Domestic, Retail, Commercial, Industrial, Education and Health) based on elemental specifications contained in the BRE Green Guide to Specification 2008 can be achieved using Marley Eternit’s range of fibre cement slates, clay plain tiles, concrete plain tiles, concrete interlocking tiles and fibre cement profiled sheets .

* Reference should be made to the 'The Green Guide to Specification 4th Edition 2008' (published by IHS BRE Press) or click here to determine generic A+ ratings for the specific product application.

Achieving the best Green Guide ratings with our products

Below are some examples of constructions using Marley Eternit products that will achieve A or A+ ratings in the Green Guide.

Facades

Commercial external wall construction rainscreen cladding - steel frame and block infill

Summary rating

Autoclaved fibre cement single sheet and timber battens, breather membrane, insulation, structural steel frame, medium dense solid blockwork with cement mortar, plasterboard on battens, paint (element no. 806230421)*

A+

 Insulated cladding on steel frame with no internal finish

Fibre cement (air cured) profiled sheet built up cladding with insulation and coated steel liner on steel support, structural steel frame, with no internal fininsh (element no. 1006600001)

A
* How construction ratings are determined: Each construction is given an element number and its rating is derived from 13 individual sub-ratings.  

Roofing - Tiles and Slates

Domestic roof construction - pitched roof, timber construction

Summary rating

Structurally insulated timber panel system with plywood (temperate EN 636-2) each side, roofing underlay, counterbattens, battens and concrete interlocking tiles (element no. 812410049)

A+

Structurally insulated timber panel system with plywood (temperate EN 636-2) each side, roofing underlay, counterbattens, battens and concrete plain tiles

A+ 

Structurally insulated timber panel system with plywood (temperate EN 636-2) each side, roofing underlay, counterbattens, battens and photovoltaic roofing tiles

A+ 

Timber trussed rafters and joists with insulation, roofing underlay, counterbattens, battens and UK produced clay plain tiles 

A+ 

Timber trussed rafters and joists with insulation, roofing underlay, counterbattens, battens and UK produced fibre cement slates

A+ 

 Low Pitched Roof^

Galvanised steel rafters and joists, double skin built up profiled roof cladding (coated steel inner, insulation and profiled air cured fibre cement sheeting outer skin) (element no. 1012550002)

A/A+*
* A for domestic retail and health and, A+ for commercial, education and industrial.  

 

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