WHAT IS SPRAY
FOAM INSULATION?
Spray foam insulation is a two-part liquid material that hardens then insulates and air seals wherever it is applied. The material comes in two large 55-gallon drums – an iso and a resin (A and B side). These two liquids are kept separate until applied at the job site by a qualified, licensed spray foam installer. The two liquids travel up through a heated hose to the spray gun, where they are combined to create the foam. The foam expands within seconds to fill the cavity surface. Depending on the type of sprayed-in foam insulation used, closed-cell or open-cell, the foam expands between 40 and 100 times its size upon application.