Question By: Spray foam insulation is an insulation and air barrier material that seals walls, floors, and ceiling cavities against air movement. This includes spaces around electrical outlets and light fixtures, and also where walls meet windows and doors. Spray foam can be sprayed into an open cavity, like in new construction, attics, crawl spaces, and rim joists.
Spray foam insulation is one of the most popular types of insulation for homes and commercial buildings. Spray foam insulation can be categorized into two types: light density open-cell and medium-density closed-cell.
Light-Density Open-Cell Spray Foam (ocSPF):
Commonly called half-pound foam, light-density open-cell SPF, or ocSPF, is semi-rigid foam with a sponge-like appearance. During the installation procedure, this SPF expands in such a way that it creates small, open cells that are filled with carbon dioxide.
Medium-Density Closed-Cell Spray Foam (ccSPF):
CcSPF is more rigid than ocSPF, and it comes with a higher Long-Term Thermal Resistance (LTTR) value. Because of its rigidity and weight, ccSPF can act as both a vapor barrier and an air barrier, making it more efficient than ocSPF.
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