SPRA funded independent research by Building Research Establishment (BRE) in 2006/7.
- Manufacturers of PVC and FPO submitted detailed raw material, energy and production information.
International experts on the environment independently set a priority against a wide range of 13 environmental impacts (e.g. energy use, waste, water use).
Manufacturers’ data was set against these criteria.
Manufacturers can obtain individual Ecopoints assessments which can be used to produce Green Guide ratings in a given specification. The generic assessment is generally reduced to allow for the range manufacture that was not included in the research.
‘Ecopoints’ assessments for generic PVC and FPO were produced.
The rating for PVC was 14.3; the rating for FPO was 11.4. This equates to a difference of 25% in a product which is just 1.2 or 1.5mm thick, so it is hardly significant in the full system.
SPRA plans to review this data to take account of improved manufacturing technique since 2006 and to include a wider range of polymer types.