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Unlike fiberglass or cellulose insulation, spray foam adheres tightly to surfaces, meaning complete removal often requires tearing out drywall, roofing materials or entire sections of a home’s ...
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Spray foam insulation or spray polyurethane foam (SPF) is an alternative to traditional building insulation such as fiberglass. A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, and forms an expanding foam that is sprayed onto roof tiles, concrete slabs, into wall cavities, or through holes ...
Spray foam insulation can an effective vapor barrier if applied correctly. Historically, most buildings built before the twentieth century were not designed to maintain 70F/21C, were both naturally well ventilated and built with very permeable materials. The increase in interstitial condensation problems are due to:
Inadequate ventilation will exaggerate small problems (such as deteriorating fiberglass insulation or cooking fumes) into a much more serious indoor air quality problem. [ 10 ] Common products such as paint, insulation, rigid foam, particle board, plywood, duct liners, exhaust fumes and other chemical contaminants from indoor or outdoor sources ...
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