11 Insulation – Preview
Spray Polyurethane Foam (SPF) Insulation
There are two types of SPF Insulation: closed cell and open cell. Closed cell SPF, while more expensive, has a higher R-value (resistance to heat flow) and qualifies as an air barrier. Both types of SPF are applied to the stud cavities and resist air flow better than traditional batts. The thickness of SPF may vary depending on the type of SPF, stud thickness, and your strategy.
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