Thursday, February 16, 2012

Are foam roofing systems sustainable?

Oak Ridge National Laboratories describes sustainable or 'green' roofing systems as “roofing systems that have a long life, low maintenance, save energy, add durability to buildings, control moisture in buildings, and contribute very little to the waste stream.”

Spray Polyurethane Foam (SPF) roofing systems from Conklin meet every criteria of this definition. SPF roofing systems greatly reduce tear-off's in many re-roofing projects, which also decreases the amount of materials entering the waste stream. In fact, SPF systems manufactured today do not contain any ozone-depleting chemicals, and the energy-saving characteristics can save considerable amounts of fossil fuel and CO2 production, which positively affects global warming.

SPF roof systems arrive on the jobsite in 55-gallon drums that create the foam plastic, which expands 30x its original volume on-site. This saves greatly on the fuel used for transportation. SPF roofing systems also add durability in severe weather events, such as hurricanes, and last more than 30 years with proper installation and maintenance. The R-value is approximately six per inch.

SPF roofing systems are applied above the roof deck and are typically are coated with light-colored, reflective coatings. These systems eliminate thermal bridging by providing a continuous layer of insulation over existing thermal bridges in the roof deck and/or assembly.

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