Spray foam insulation: Types and applications

There are two main types of spray foam insulation - open-cell and closed-cell. Both provide excellent insulation and air sealing benefits but have different properties.

Open-cell spray foam has a density of about 0.5 pounds per cubic foot. It has a more flexible and porous structure which makes it easier to install in awkward spaces but also has a lower R-value per inch. It is commonly used for retrofit projects where high insulation performance is not as critical.

Closed-cell spray foam has a denser structure with a density of about 1.5 pounds per cubic foot. . Spray Foam Insulation offers a higher R-value per inch and better moisture resistance making it suitable for applications where maximum insulation is required. Common uses include commercial roofing, below-grade foundations, and outdoor insulated wall systems.

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