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Closed cell spray foam is a liquid applied, sprayed on, polyurethane monolithic shell. An un-interrupted and superior insulation system. It is comprised of tiny, closed cell air bubbles, trapped in a strong matrix of tough polyurethane. It is manufactured on site, during installation, with specialized equipment and a well trained installer.
Once applied, it expands to vill any voids and sticks tenaciously to most common building materials. Closed cell spray foam is air and water tight and can seal out moisture vapor and soil gases such as radon. After 24 hours, there is no further off gassing and is safe for occupation.
Closed cell spray foam is primarily used for building insulation, but can be used as damp proofing for foundations, under slab air, vapor and soil gas(radon) barrier, and in many commercial buildings it is used as a roofing material.
As an insulation material, it boasts some of the highest r values per inch, easily outperforming batt materials and blow in fiberglass, rock wool, cellulose and commonly bought sheet foams. Our current closed cell foam that we install, Huntsman high lift HFO, packs a whopping R 7.4 per inch. There is no other insulation like it.
Air sealing is one of its great attributes. Once cured, air can not pass through it. Since it bonds to any material it is applied to, it seals all gaps, preventing air flow. This is a big part of an over-all tight construction strategy. Closed cell spray foam is applied as a sprayed liquid that instantly and permanently bonds to building materials like wood and wood based products, concrete, metal and most plastics. While still liquid, it sprays and makes its way into areas that other insulations can not. Around nail heads, into cracks and small spaces between materials, filling gaps and voids as it flows and begins to expand. Before it cures, it immediately bonds to whatever it is in contact with. This is why it is excellent as an air sealing solution.
Structural integrity of your building is improved. Polyurethane is already a widely used adhesive in construction because of its durability and strength of bond. Subfloor adhesive is used in nearly every home to bond materials together, where nails or screws are not enough. When closed cell spray foam is applied to building materials, it creates the same type of bond, everywhere it is applied. The result is far sturdier building, under all types of loads.
Closed cell spray foam is typically installed in a few areas of residential construction:
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