Spray polyurethane foam roofing systems have excellent adhesion to a variety of substrates including built up roofing, modified bitumen, concrete, wood, asphalt shingles, clay tile, and metal. Since they add little weight and can be applied in any thickness to add slope and fill in low areas, these roofing systems are often used as a recover roofing system over existing roof coverings.
Hail and wind driven missiles can damage the spray polyurethane foam roofing system. However, the damage does not cause leaks. Furthermore, the damage can be repaired months later without compromising the long term performance of the roofing system.
Spray polyurethane foam roofing systems also excel when the following conditions exist:
(from Mason Knowles at masonknowles.com)
Texas A & M currently has ove 10,000,000 square feet of spray foam roofing systems. (from Sprayfoam.com) Almost no other roofing system has been installed there for over 30 years.
Proven sustainability and energy efficiency. In 1974, dissatisfied with the performance of their traditional tar and gravel built-up roofing (BUR)
systems, the Physical Plant Department at Texas A&M began looking for alternatives. The BURs were leaking constantly after an average of five years of service, and isolating the sources of the leaks was next to impossible. The university selected SPF because it is seamless, monolithic and fully adhered. And because it is lightweight, a complete tear-off of the existing BUR could be avoided.
“We sprayed over the failing BUR for a number of years, mainly due to budgetary constraints,” says Sam Cohen, Construction Project Manager, Engineering Design Services at Texas A&M. “That’s one of the advantages to SPF. And environmentally, it means all that material doesn’t end up in the landfill.”
Texas A & M feels the advantages of the foam roofs are:
Applies directly to existing substrate for zero
Improved energy efficiency paid for cost of
roofs in 4.5 years
25-year life expectancy with
Decades of leak-free performance
Seamless, self-adhering application
Quick installation for minimal disruption
This concept home in Boulder, Colorado was sprayed by our company founder, Bill Rice Sr. in 1971. The exterior of the building was formed with re-rod and covered with a plastic sheet. The entire exterior then recieved about six insches of spray polyurethane foam roofing material and coated with an elastomeric coating. Several of the interior features were also built up with spray foam. This house is identical to the home used in Woody Allens movie "Sleeper" in Denver, also sprayed by Bill Rice Sr.. This picture was taken in May of 2005. The house requires little maintenance and is very energy efficient. If you have or are designing a building with an unusual roof configuration, spray foam roofing may be your answer.