Overall refurbishment of police directorate Zwickau — main building/east wing, insulation outside walls, thermal insulation under floor and over ceiling at the attic, thermal insulation at sloping at the attic and on hoods incl. works on the roof construction, windows and exterior doors, sun protection, building waterproofing measure, photovoltaic system, solar intermittent system, heating, ventilation and air conditioning, building automation, lighting systems