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Life Cycle Assessment of Single Ply Roofing

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.

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