Why use foam to insulate?
The real purpose of a building is for people to be able to isolate themselves from a hostile exterior climate. The purpose of insulation is to take this beyond minimum shelter to allow complete modern interior climate control. To achieve this climate isolation successfully requires full isolation between interior and exterior air, moisture and temperature. The two climates must not mix in the insulated building cavity. The system must also be reversible so the building may be both heated and cooled efficiently. Closed Cell Foam achieves the climate isolation necessary by its nature as a solid closed cellular plastic – fully adhered in the thin space of the building cavity. Exterior and interior climates cannot mix so no compromise of climate isolation can occur due to the exterior climatic conditions, however severe. Spray foam insulation reduces drafts by cutting convection looping. Looping occurs when temperature differences between the outside and inside walls cause warm air to rise
