A Cavity is the empty space between the inner and outer brickwork of house building where insulation can be added. The Cavity Wall Insulation is used to reduce heat loss through a cavity wall by filling the air space with insulation material that inhibits heat transfer, such as the mineral wool, glass or rock wool, or polystyrene (EPS) bead and polyurethane (PU) foam.
Related Definitions in the Project: The Construction
