What SPF Insulation Made Of?
Spray Foam Insulation is made by combining the chemical isocyanate and polyol resin into a foam. Polyurethane is the most commonly used material for spray foam and contains a low-conductivity gas in its cells and comes in two forms: open-cell (effective sound absorber) and closed-cell (high density | high R-value). The chemical mixture of isocyanate and polyol resin reacts to expand up to 30-60 times its liquid volume once it is sprayed in place.
