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SPF Residential and Commercial Flat Roofs
The future of flat roofs is here today!
Spray foam roofing is the most cost effective & sustainable roof system available. It can be used in new construction and reroofing projects. Since foam roofs are spray applied they are self-flashing and sealing. The end result is a seamless, monolithic, waterproof roof. Since the base for the roof is spray foam insulation you get an R-value of approximately R-7.2 per inch. We spray between 1.5 inches and 3 inches of foam on the decking resulting in an R value of 10.8 – 21.6. If the foam is sprayed on more thickly there is a proportional improvement in R-value. Once the foam has been applied, a top coat gets sprayed over the roof to protect it from ultraviolet rays.
Once the new roof has been installed our product manufacturer will inspect the roof, take a core sample, test the sample, send you the test results, and issue a manufactures warranty.
With routine maintenance, spray foam roofs can last for the life of the building.
SPF roofing systems excel when the following conditions exist:
- High Energy Bills
- Slope must be added to provide positive drainage
- The roof substrate has numerous penetrations
- The roof deck is an unusual configuration
- Lightweight materials are required
- There are severe temperatures
- The roof is in an area where high winds are likely to occur
Because of the energy saving characteristics and low maintenance costs of SPF roof systems, these roofs are suitable for residential home owners and organizations that pay their own energy and maintenance costs.
What is SPF Roofing?
Spray polyurethane foam (SPF) roofing consists of an application of 3 pound close cell spray foam covered with an elastomeric coating of Urethane, Silicone, or Polyurea. The coatings help protect the foam from ultraviolet rays. Specialized equipment mixes two liquid components at the spray gun that applies the SPF to a prepared substrate. The mixed liquid expands many times its original volume in a matter of seconds, forming a rigid foam plastic that chemically bonds to the surface to which it is sprayed. Spraying the foam in 1 1/2"to 3" lifts allows the applicator to reach the desired thickness to fill in low areas, build up slopes, and provide insulation.
SPF has a closed cell structure that makes it water resistant. SPF roofing systems have good adhesion to a variety of substrates including metal, wood, concrete and built up roofing (BUR). Since SPF adds little weight to existing roof coverings and can build slope to fill in low areas, these systems are used frequently as a recover roofing system. Hail and wind driven missiles (such as tree limbs, broken roof tile, metal flashing, etc.) can damage the SPF roofing system. However, this type of damage typically does not cause leaks and can be repaired later without compromising the long-term performance of the system.
While traditional roofing systems may perform well in non-critical areas, they tend to fail around penetrations, along seams and along the edges just a few years into their service life. Since foam roofs are spray-applied, they "fit" perfectly around all obstructions, usually resulting in drastically lower failure rates. Since SPF roofs are very light, they can most often be applied over existing roof surfaces without exceeding weight limits.
To learn more about SPF roofing please call us at 201-735-7600 or 914-623-0326.
