Methods: During the construction of plasterboard ceiling, about 65,438+0 ~ 2 cm expansion joints should be reserved at the joints between plasterboards and between plasterboards and walls. First, fill the gap with putty, then stick it on both sides with cloth strips, and then scrape it with putty. The wooden keel used for ceiling construction must be firm and not loose to prevent cracks in gypsum board ceiling. In addition, when pasting gypsum internal corners, a gap of about 0.5cm should be set aside from the top surface and the wall surface respectively, and caulking should be coordinated with gypsum powder and latex to prevent the gypsum line from cracking.
Gypsum board is a kind of material made of building gypsum as the main raw material. It is a building material with light weight, high strength, thin thickness, convenient processing, sound insulation and fire prevention, and it is one of the new lightweight boards that are being developed emphatically at present. Gypsum board has been widely used in interior partitions, wall coverings (instead of wall plastering), ceilings, sound-absorbing boards, ground base boards and various decorative boards of various buildings such as houses, offices, shops, hotels and industrial plants.