The width of the drywall sheet is 1.2 m.

Performing a plasterboard ceiling with your own hands for the kitchen, and other places where there is fire, or at least some risk of fire should be used by drywall, which has increased resistance to high temperatures (GCllass). For baths and other places with high humidity, drywall ceilings are also planned, of course, you need to use moisture -resistant sheets of drywall (GKLV), and for rooms and other rooms, ordinary drywall (GKL) is suitable, which is also much cheaper. A drywall of 9 thickness will come down to the ceiling.5 mm. You can certainly use 12.5 mm. But the order is harder. The width of the drywall sheet is 1.2 m. and the length is different — 2 m., 2.5 m., 2.6 m., 3 m. This should be taken into account when installing a drywall ceiling with your own hands, and buy sheets of the most suitable size and of course, before buying, you should calculate the area, but this must be done with a margin, since in repair work there are quite often unforeseen circumstances.