2 lb closed-cell spray foam insulation is a high-performance insulation material that is often used in residential, commercial, and industrial applications as a complete spray foam solution. It is made by spraying a liquid mixture of polyurethane chemicals onto a surface, which then expands and hardens into a dense foam. Here’s a breakdown of its key characteristics:
Key Features:
- Density: The "2 lb" in the name refers to the density of the foam—2 pounds per cubic foot (lb/ft³). This density indicates a higher concentration of material in the foam, making it denser and more rigid compared to lower-density foam types (e.g., 1/2 lb or 1 lb spray foam).
- Closed-Cell Structure: The foam contains millions of tiny, closed-off cells. This structure makes it more resistant to moisture absorption compared to open-cell foam, providing a strong vapor barrier and helping to prevent water damage and mold growth. It is ideal for areas where moisture is a concern, such as basements, crawl spaces, or exterior walls.
Thermal Insulation: Closed-cell spray foam has a high R-value (typically around R-6 to R-7 per inch of thickness), which means it provides excellent thermal insulation. It effectively reduces heat transfer, helping to keep buildings warmer in the winter and cooler in the summer.
