In recent years Spray Polyurethane Foam (SPF) has been re-formulated into a low rise two component polyurethane foam roofing adhesive designed to adhere EPDM membranes or board stock insulation to various roofing substrates. Polyurethane Spray Foam ...
Source: http://www.prlog.org/11812730-alg-offers-spray-polyurethane-foam-solution-for-afghanistan.html
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