Specifying SPF Roofing Systems: Part 6
Additional advantages of SPF roofing systems
Reduced construction debris is a huge advantage. Oak Ridge National Laboratories reported, “The need for multiple roofs makes roofing one of the largest contributors of solid waste.” According to a 1999 survey by the National Roofing Contractors Association (NRCA), more than 68.5% of the $11.3-billion low-slope re-roofing market includes tear-off and replacement of the existing roof membrane.
Spray polyurethane foam (SPF) roofing systems like those from Conklin have excellent adhesion to a variety of substrates, including BUR, modified bitumen, concrete, wood, asphalt shingles, clay tile, and metal. Since SPF adds little weight and can be applied in various thicknesses to add slope and fill in low areas, SPF roofing systems are often used as a recover system over existing roofs without tear-off. Therefore, the application of SPF roofing systems over existing roof coverings greatly reduces the amount of construction debris in landfills.
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