Life Cycle Assessment (LCA) is the science of environmental footprinting, in order to report on impact measures such as Global Warming Potential, embodied energy, and potential to create smog over the entire lifetime of a product. Sika Sarnafil commissioned the Athena Sustainable Materials Institute, a non-profit LCA think tank for the construction sector, to review product performance data from various sites around the country along with providing a thorough review of various research and certification documents. 

Based on Athena’s LCA, Sika Sarnafil has published the first single-ply roof membrane cradle-to-grave EPD for Sarnafil S327 and G410 disclosing the impacts of Sika’s roofing membranes from manufacturing through end-of-life.

Declarations and Certifications

Environmental Product Declarations (EPD) Available here .
BBA Certificate Available here

Along with the Athena Sustainable Materials LCA, The British Board of Agrement, a third party product assessment agency in the UK, also concluded that all available evidence suggests that Sarnafil Roof Membranes have a service life in excess of 35 years, and are engineered to withstand extreme environmental exposure.

The graph shows that when compared to a typical U.S. TPO roof, a high-performance PVC membrane such as Sarnafil has a significantly lower carbon footprint, in part due to its longer life cycle. The slightly higher carbon footprint at the beginning of the life cycle is in part due to differences in product density; this is outweighed later in the life cycle. The lifetime reduction in environmental impacts and increase in cost savings outweigh impacts associated with production, distribution, and use.