Proper Installation of Spray Foam

From Roofing Contractor Magazine:

Optimizing The Efficacy And Energy Efficiency Of SPF In Roofing Applications
By Rick Duncan
January 1, 2014
Spray polyurethane foam (SPF) is widely recognized as a highly effective building envelope material, with roofing systems being one of two core application categories (the second being building envelope insulation for walls, ceilings and floors). A highperformance product with many exceptional benefits, spray foam has gained market share with wide adoption by builders and roofing contractors. Like many building products, proper installation should always be performed by a professional installer utilizing proper handling and installation techniques, with safety precautions employed and followed.
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SPFA believes that the path to a healthful, safe, high-quality and performing SPF installation travels through the hands of a knowledgeable, trained, experienced, and ideally PCP-certified professional contractor.