The ceilings in frame buildings are made of thick boards 38 mm and height 140,184,235 or 286 mm, spaced apart 30,40 or 60 cm. The sheathing, most often made of thick plywood, is an integral part of the ceiling structure 19 mm or from OSB. Sheathing plywood boards should be tongue and groove glued, and to the ceiling beams they should be glued and nailed at the same time.
Double ceiling beams or battens between adjacent beams are used for load-bearing walls. Partition walls can rest directly on the ceiling sheathing.
The floor is usually finished with a carpet – glued directly to plywood or laminate flooring. In order to obtain better acoustic parameters of the ceiling, dry screed combined with insulation material can be used..
From the bottom, the ceiling structure is covered with plasterboard. When the spacing of the floor joists is 40 cm drywall can be attached directly to the ceiling joists.
The thermal and acoustic insulation of the ceiling is made of soft glass or rock wool, laid between the beams. This insulation should reach the outer sheathing of the wall structure.