First of all, for the internal walls, you need to calculate the right amount of insulation, where small gaps should be provided between the sheets of polystyrene foam. To cut the panels, you can use a sharp knife or hot nichrome wire. The room should be ventilated to avoid an unpleasant odor. The surface of the walls should be cleaned of contamination and the old decorative coating. Irregularities need to be plastered, and the cracks are knitted with a foam. The flat wall is primed in two layers, where special attention should be paid to the primer of the corners. After the surface dries, a starting putty is applied with a thin layer, on which the insulation cloths are fixed using special glue.
