Any of all heaters requires preparing the surface of the ceiling for installing insulation. First of all, it is cleaning the ceiling from the old plaster, sealing cracks using a plaster solution and a primer is possible to strengthen the layer. After the preparation, the frame for insulation is laid if soft elastic bags are used, which cannot be strengthened to the ceiling with ordinary dowels or self -tapping screws. The frame for insulation can be created from wooden racks or aluminum profile.
