Cavity

Cavity Insulation refers to a method of improving the thermal efficiency of buildings by filling the gap, or cavity, between two layers of brickwork in walls. This gap, or cavity, is a common feature in buildings constructed with cavity walls, which consist of an inner and outer layer (or leaf) of brick or concrete block with a space in between. The primary purpose of cavity insulation is to reduce heat loss by minimizing air movement and preventing cold air from penetrating the outer wall, while trapping heat inside the building.