Spray foam insulation is a type of insulation that is sprayed directly onto surfaces, where it expands and hardens. This creates a protective barrier that helps to prevent air leaks and provides excellent thermal insulation. It's commonly used in walls, roofs, and floors and is known for its ability to improve energy efficiency and indoor comfort. Composition and Application Spray foam insulation is composed of two main chemicals, isocyanate and polyol resin, which react whe