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What is Sustainability?

Sustainability in single ply roofing products covers environmental, economic and social factors. As far as single ply roofing is concerned, the key environmental issues are:

Production

Use of Oil - All single ply membranes are produced from oil, with the addition of a significant proportion (up to 60% by weight) of inorganic constituents, to improve stability, fire resistance, UV-resistance and to aid installation.

Use of energy - The primary energy source in manufacture is electricity. Many European manufacturers now obtain electricity from renewable sources including hydro-electric generation. Energy for extraction, processing and manufacture is included in Life Cycle Assessment.

Release of chemicals during service:

Improved formulation has almost eliminated this feature. Details can be found in environmental impact certification issued by SPRA membrane manufacturers.

Durability

Durability is a product characteristic. Experience in mainland Europe goes back to the 1950’s and in the UK to the 1970’s, so we know that durability is proven and extending as new formulations are developed. Service life depends on workmanship factors and obligations on building owners to inspect and maintain roofs. This why SPRA puts a high priority on training and site quality control. Again, service life has gradually increased.

Contribution to carbon reduction

Carbon reduction is fundamental to sustainability because it secures not only the environmental but also the social and economic future of society.

End of life

Recycling and re-use - Single ply membranes are recyclable; opportunities for recovery and recycling have increased as volumes have increased.

Disposal - Polymer waste is a high value commodity with many re-uses. SPRA policy is to reduce disposal to landfill to zero. Ultimately, the carbon content can be recovered by high temperature incineration.

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