Spray Polyurethane Foam has been used as a roofing and insulation material for over 50 years. During that time, spray foam roofing systems have proven themselves through comprehensive, independent studies to be dependable and very affordable. Fast forward to the present and there are spray foam roof systems that have been in place for half a century, and if properly maintained they’ll be able to last indefinitely.
Spray Polyurethane Foam consists of isocyanate and polyol. These components are fed through a proportioner which heats and then pumps the 2 separate components to the spray gun, where they are mixed and then sprayed onto the substrate. Because it is sprayed onto the roof as a liquid, it forms a single continuous structure that is seamless and extremely stable. Spray Foam requires a clean surface for proper application. It has to be dry, free of contaminants and properly fastened to the substrate in accordance with the local building codes. A protective elastomeric top coat such as silicone or polyurea is also sprayed on, but it is also possible to be applied with hand or power rollers over the foam.