A light method of wet insulation of building walls consists in gluing polystyrene boards or mineral wool with a thickness of 8-12 cm. A thin layer of adhesive mortar is applied to the glued and in many cases anchored with connectors and the glass mesh is pressed into it.. After drying, the surface is also put on with mortar and left on 3-4 days to harden properly. Then such a surface is primed and covered with a thin-layer plaster.