Building Envelope

Sealing the Building Envelope

A building envelope is the shell that separates the interior environment of the building from the exterior environment. Building envelope components separate conditioned spaces from unconditioned spaces.

Air leakage through the building envelope accounts for 30-40% of the energy used in buildings in the United States. Anything that can be done to minimize this energy loss will save the building owner a substantial amount of money by reducing overall energy consumption.  In addition to significant heating/cooling energy loss, air leakage through the building envelope can permit moisture and condensation to collect in the walls and attic. This internal condensation creates significant problems for buildings and occupants alike.  Moisture causes reduced insulation R-value, poor air quality and mold and mildew, which may lead to structural damage.

Closed Cell Sprayed Polyurethane Foam (ccSPF) addresses all of these issues.  When applied in liquid form, the foam quickly expands, filling every crack, crevice, gap and hole in the building envelope The end product is an unbroken envelope separating the interior and exterior of the building except for window and door penetrations.

Moisture condenses in a wall or in the attic when warm moist air from the interior of the building meets the cold surface of an exterior wall.  This condensation may lead to reduced efficiency of insulation materials other than ccSPF and also mold and mildew growth within the wall.  Severe cases may even lead to dry rot and structural damage.

There is no better insulating material than ccSPF to address thermal, air infiltration, moisture and structural issues.