1), direct paste installation: repair the roof smooth and flat, and then paste the gypsum board directly on the roof with adhesive. If the gypsum board is too long to cut, you should start from the front and then cut the paper on the back, so that the cut edge can be straight and flawless.
2) Horizontal mounting screws: If wooden keel gypsum board is used, it can be fixed with galvanized round nails or screws, and the nail holes should be filled with putty and then painted with the same color as the board surface; If U-shaped light steel keel is used, gypsum board can be fixed with galvanized tapping screws.