Spray Foam Roofing

spray foam re-roof

Why Spray Foam Roofing


Spray polyurethane foam roofing, or spray foam roofing, is a material that’s sprayed as a liquid so it can expand into a foam, creating
a solid layer across an existing roof. An SPF roofing system can be used in any climate, and when correctly installed and maintained, can last over 50 years.

On-site, Spray Polyurethane Foam for roofing applications is made by mixing two highly reactive chemicals.

The mixing process involves pumping the two chemicals, A (polyol/resin) and B (isocyanate), separately to an internal mixing spray gun.

In the last 50 years, there have been many significant improvements in polyurethane roofing equipment and chemistry, resulting in today’s dependable roof surfaces.

Spray polyurethane foam roofs have the highest R-value* achievable. The higher the R value, the less heat or cool air that makes its way through. A higher R value means less HVAC use which means lower energy costs. (*R value is the capacity of an insulating material to resist heat flow. The higher the R value, the greater the insulating power.)

Spray foam roofs are faster to install than other roofing systems because:

  1. There is little to no tear off
  2. Working around penetrations is easy as the material is sprayed on
  3. Foam requires less material and installation equipment than other roofing types

As an example, because spray foam has to be “sprayed on”, it would take about 2 minutes to roofing around a penetration unlike rubber roofing, which requires custom cutting of materials and can take up to 30 minutes.

Polyurethane roofs have the advantage of being re-coated.  Spray polyurethane foam roofs properly installed and maintained should not require re-coating for 10 to 20 years.

Did you know that spray polyurethane foam roofs are self-flashing?  Spray foam can contour to irregular shapes making installation faster and the application water tight. Further, the whole roof is water tight because applied foam is monolithic meaning one piece. There are no seams to break apart which provide a highway for leaks into the building structure.

Reroofing with spray foam has become a popular, economic and eco-friendly way to get a leak-free, attractive, and insulated roof without the expense of a tear-off and roof rebuild.  The science of polyurethane foam coupled with the ease of application make foam reroofing the smart choice for commercial and industrial building owners who are looking to improve property values, stop leaks and save energy costs.