First, repaint the gypsum board.
For the plasterboard ceiling and wall that has been installed, the simplest solution is to repaint the plasterboard. Firstly, gypsum board powder is mixed with water, the gaps are filled, leveled with a flat scraper, and dried to make gypsum paste. Then use sandpaper to polish, and finally apply a layer of paint or wallpaper.
Second, the use of gypsum board joint tape
If the gap is large, it can be reinforced with gypsum board joint tape. First, fill in the gap in the same way and stick the seam tape on the gap. Then use gypsum board powder to fill the seam belt and dry it. Finally, paint is the same as wallpaper.
Third, replace gypsum board.
If there is a big gap or a large number, gypsum board may need to be replaced. Pay attention to the size when replacing gypsum board to ensure that the new gypsum board is consistent with the original size and shape. In addition, it is necessary to pay attention to the joint position, so that the joint position of the old and new gypsum boards will not overlap, so as not to affect the decorative effect.
In a word, the key to solve the gap problem of gypsum board ceiling wall lies in the construction technology. Before construction, we should make corresponding preparations, strictly control the quality during construction, ensure the construction is in place and avoid cracks. If the gap already exists, measures should be taken as soon as possible to avoid causing more problems.