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Closed Cell Spray Foam

As with open cell spray foam insulation, closed cell insulation foam provides both insulation and air sealing. In contrast with open cell spray insulation, closed cell spray foam is solid — the cells of the bubbles remain closed. This results in a more rigid product than open cell and contributes to its higher R-value per inch. The rigidity of closed cell foam insulation also makes it a top candidate for structural reinforcement helping to strengthen buildings during storms or high winds and making the cost of spray foam insulation a sound investment.

Like open cell insulation foam, closed cell spray foam is vapor permeable, is able to accommodate seasonal shifting and is not a food source for mold. With its ability to deflect water and provide a vapor barrier, closed cell foam insulation works for both interior and exterior applications and is mostly used for metal siding applications or areas that sweat more.

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