Where is SPF roofing used?

Specifying SPF Roofing Systems: Part 3

Where is SPF used?
Spray polyurethane foam (SPF) roofing systems like those from Conklin 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.

Caution should be used when specifying any recover roofing system. The existing roof covering and roof deck assembly should be thoroughly evaluated to verify that it can be a good substrate for SPF roofing systems.

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. SPF roofing systems also excel when the following conditions exist:
- Additional insulation is required.
- There are severe temperatures.
- The roof substrate has numerous penetrations.
- The roof deck is an unusual configuration.
- The roof is in an area where high winds are likely to occur.
- Lightweight materials are required.
- Slope must be added to provide positive drainage.

Because of the energy-saving characteristics and low maintenance costs of SPF roof systems, these roofs are suited to companies or organizations that own their own buildings and must pay their own energy and maintenance costs.

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