in a building is meant to isolate the structure from a hostile exterior climate. The purpose of insulation is to develop this climate isolation beyond minimum shelter to allow complete, modern interior climate control.
Achieving this climate isolation successfully requires full isolation between interior and exterior temperature, air, and moisture. The two climates should not mix in the insulated building cavity. The system must also be reversible so the building may be both heated and cooled efficiently.Corbond Closed Cell
spray foam insulation achieves the climate isolation necessary by its very nature as a solid cellular plastic when it has fully adhered in the tin space of the building cavity. Exterior and interior climates cannot mix, however severe, so no compromise of climate isolation can occur due to the exterior climatic conditions.