Two-layer wall is a type of building structure consisting of two basic layers with different functions: load-bearing and insulating. The load-bearing layer, usually made of bricks, cellular concrete, ceramic or silicate blocks, is responsible for carrying the structural loads of the building. The insulation layer, made of materials such as polystyrene, mineral wool or polyurethane foam, provides thermal and acoustic insulation. A façade finish is laid on top of the insulation layer.
In two-layer walls, the precise interconnection of the layers is important, which affects the energy efficiency of the building envelope. Double-layer walls are widely used in residential and commercial construction, especially in regions with colder climates where it is important to reduce heat loss and improve the thermal comfort of buildings.
