The use of spray foam as an insulation material has only been around for the last 70 years. Nonetheless, its popularity has skyrocketed over the years, and it is becoming the top insulation material of choice for homeowners and contractors.
Spray polyurethane foam is produced when the compound isocyanate is mixed with polyol resin. The mixture adheres to the surface when sprayed using an application gun. It expands to double or triple in size, then dries and cures to form strong insulation against heat, moisture, and sound. Use a fan spray nozzle to cover flat boards and other wider areas with spray foam. If you want to cover target cracks, gaps, and corners, then use a conical nozzle. These nozzles are always included in the spray foam kit.
Some of the areas where spray foam is applied include the underside of roofs, foundations, crawlspaces, basements, ceilings, and inner cavity of walls. It can also be used to insulate vehicles, garages, yachts, trailers, boats, and container carriers.