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Learning the Difference Between 1/2-lb and 2-lb …
Page 1 Learning the Difference Between 1/2-lb and 2-lb Spray Polyurethane Foam By Mason Knowles, Executive Director Spray Polyurethane Foam Alliance S pray polyurethane foam (SPF) has be-come popular for its insulation value and air barrier The plastic material comes in two basic types 1/2-lb and 2-lb and both are used in insulation applica-tions as barriers in buildings. Both of these foams also can help control condensation within buildings and have other environ-mental benefits. Architects/engineers (A/Es) need to under-stand how the two foams are different .. and which one may be suited for a particular project. The first point is quite easily answered, but the second requires a more detailed analysis of the specific building s use, construction type, environment, and other general characteristics. 1/2-lb SPF refers to generic spray polyure-thane foam weighing Between and lb/ft3 when fully cured.
Page 1 Learning the Difference Between 1/2-lb and 2-lb Spray Polyurethane Foam By Mason Knowles, Executive Director Spray Polyurethane Foam Alliance
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