2 lb-High Density Spray Foam
2 Pounds SPF, Also Referred To As High-Density, Or Closed-Cell Foam
Closed-cell foam, in contrast to open-cell foam, is extremely rigid and dries into a material that resembles hard plastic. The closed cells that make up closed-cell foam are, as the name implies, closed. Closed-cell foam weights 2 to 4 pounds per cubic foot due to its cell structure. High-density foam is defined as having a density of 3 pounds or more per cubic foot or higher.
Closed-cell foam is best used in commercial jobs, metal buildings, external applications, basements, and crawl spaces. Because of its closed structure, it is good at blocking out moisture and air. It only has to be 1.5 inches to block out moisture and air.
Is 2lb Spray Foam Waterproof?
Spray foam weighing two pounds is waterproof. Its closed design prevents water from entering and is often unaffected by dampness. It serves as a barrier for vapor and air in addition to being waterproof. Due to its characteristics, it can be used in basements to get rid of the musty smell some basements develop when moisture seeps in.
What Is The R-Value Of 2 Pound Spray Foam?
High-density foam has an R-value that is almost twice as much as low-density foam. Its R-value is 6 to 8 per one inch, or 12 to 16 per 2 inches. When using closed-cell foam, it should be 4 to 5 inches thick for ceiling applications and 2 to 3 inches for the walls.
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