The process for installing spray foam insulation is fairly quick and easy, but it should be done by a professional to ensure proper steps are taken to create quality foam and applied correctly to ensure thorough air sealing and insulation.

First, the two liquid components that are mixed to create foam are heated. Second, the installer sprays the foam with a high pressure proportioner system through hoses attached to a spray gun. At the tip of the gun is where the two fluids combine and are sprayed into the areas that need insulation. The chemical reaction that takes place converts the liquids into a solid containing millions of tiny bubbles. Spray foam insulation of the open-cell type expands 120 times its volume within a few seconds. The applicator sprays an area until the appropriate thickness is reached then progresses throughout the space.

If the area being sprayed will receive a finished wall covering such as drywall the foam will be trimmed flush with the framing members. This can be done right after the foam is sprayed. Any debris from the installation gets cleaned up and discarded along with any prep materials.