The walls between the apartments are mainly made of prefabricated reinforced concrete elements, partly also of solid concrete blocks, which are also covered with mineral wool insulation on both sides and double plasterboard cladding walls. The interior walls of the apartments are built on a metal frame, which is covered with double gypsum board on both sides to increase soundproofing. The interior of the walls is filled with mineral wool. The interior walls of the washrooms are covered with Tycroc waterproof tiles. Separate toilets and utility rooms with moisture-proof gypsum.