Spray Foam Insulation
| SPF (spray
foam) is receiving greater recognition because of its ability to make
homes more efficient. Like Cellulose, SPF is injected into the building
cavities one bay at a time. SPF is a very effective air-barrier and
is available in many different chemical make ups and R-values per
inch. SPF also adds to the strength of the building by adhering to
the many building surfaces and using it own rigidity. Widely known
Icynene is a low density foam at R-3.6. Several low density foams are offered in eco friendly formulas; soy-based, bio-polyols or even mushroom base. Many Icynene or polyurethane SPF’s are on the market; many have VOC’s (volatile organic compouind), CFS’s (chlorofluorocarbons) or HCFC’s (Hydrochlorofluorocarbons) within their chemical makeup; none is toxic, yet all are ozone depleting. One of the highest insulation R-values achieved per inch is polyisocyanurate SPF (at R-7.6 its hard not to consider); yet the cost can be substantial. Spray foam offers many uses and options. Choosing the right product, its application, and the proper installer, are key components to a successful SPF investment. |
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Insulation
R-Values Per Inch
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