Gypsum board two faces which face up to install the ceiling
Seal processing
(1) modulation of one-component caulking plaster putty
The container used for modulation must be clean. According to the provisions of the proportion of the first clean water will be poured into the container, and then slowly to the water cast gypsum powder, let it swell 5min, and then stir the stir bar into a slurry without caking thick slurry, Modulation of a good pulp, can no longer add gypsum powder, so as not to agglomerate. Generally applicable to the construction time of 45min, more than time to start solidification, can not be used.
(2) Board edge treatment
The edge of the sheet is not treated, and the cut edge of the board should be treated as follows: Before the board is installed, gently press the front edge of the cardboard side and then use the knife Chamfer the side of the paper to pick the upper layer, and pick the open face paper torn, pay attention to the gypsum core can not be exposed, this part still keep the paper under the paper.
(3) capping process
With a small scraper will be stitched putty evenly embedded in the lower part of the gap between the joints, so putty squeeze the back panel side, to form a protruding putty along the mouth, so that the edge of the board with the stopper putty more firmly. Until the putty completely dry, with electric or manual sander, No. 2 emery will be slit plaster putty polished. And then with the entire paper gypsum ceiling decoration construction.
