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Sustainability
Environmental Impact
Environmental impact ranges from consumption of natural resources and energy during manufacture and installation through to removal, recycling and disposal. Realistic durability and maintenance input estimates are an essential pre-requisite of impact studies. Thermal insulation performance also has a major positive effect on the environmental impact of any roofing proposal. The environmental impact of a particular design is specific to that design. Many simplistic impact ratings for individual materials are available, but in reality the impact of a design is dependent upon the client’s selection of which environmental issues are most important.
Sarnafil Ltd can provide a wide variety of information regarding the environmental profiles of our materials, including the provision of recycled products. Sarnafil Ltd base these profiles upon agreed national and international protocols, as they develop.
Durability
One of the key aspects of a product’s environmental impact is its durability. This is expressed in terms of anticipated life until renewal. In financial terms it is the period over which the depreciated initial capital cost and annual maintenance cost do not exceed the annual cost of a replacement roof.
The British Board of Agrément (BBA) assess the durability of single ply roofing membranes as part of the Agrément Certification process. Single ply membranes are typically given a life expectancy of:
- "at least 20 years”
- “in excess of 20 years (Sarnafil TG/TS)
- “at least 25 years”
- “in excess of 30 years” (Sarnafil G/S)
The oldest Sarnafil S membrane roofs were installed in 1964 and are still keeping the water out.
© 2006 Sarnafil Ltd. Legal Disclaimer
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