Gypsum board putty how long off the drum
Then we come to understand how the gypsum board ceiling cracking how to deal with:
1. If it is caused by cracks in the cracks, you can first fill with the filling putty, so that the filling putty into the gap inside, can not be limited to the surface of the "entry", the surface was flat and then used to bandage at right angles Gap, and then putty putty, polished after the brush can be latex paint.
2. When the ceiling elevation and beam at the same elevation, the gypsum board must pass through the beam at the end, the advantage of doing so is that there is no interface, which will effectively reduce the seams to prevent cracks. Also handle the ceiling elevation and beam parallel mouth when the gypsum board should be through the lower beam, side of the mouth. Leaving the slit on the side to prevent the seams from present, which would reduce cracks and repair rates. Ceiling wood keel the top corner of the seal gypsum board with L-shaped, to prevent the formation of cracks. Leave the seams on both sides of the ceiling and make the seams in a zigzag shape, then fill the lacquered base or gypsum powder in the joint.
3. has been leveling keel gypsum board ceiling in the external force becomes undulating, resulting in covering gypsum board to produce tension, deformation, cracks. To solve this problem is to pay attention to the construction of the structure and take some necessary measures, such a situation is relatively large harm, and difficult to repair, so that in the construction must be strengthened attention.
4. Gypsum board ceiling cracking can be sewn putty patch, try to let it dry, and then paste seam. Seal putty in the drying process, there may be a small amount of dry shrinkage and dry cracks after the situation, it is recommended in the seam before the tape to pay attention to re-putty again, until dry and then fine sandpaper polished smooth.
First of all, we come to understand the reasons for the gypsum board ceiling cracking:
1. The cracked part does not belong to a cross or a seam before the gypsum board is constructed. Construction of gypsum board with the wrong stitching. If the crack site at the right angle of the transfer site, because the uneven stress caused by the consequences; the whole gypsum board at right angles to the joints, joints remain in the linear ceiling parts of the fall, this phenomenon is not handled properly grass, Brush interface agent, do grass-roots treatment.
2. Fixed the expansion of the expansion of the bolt bolt is not selected or hanging points and pendant nodes appear false force situation. There are technical hanging parts on the expansion of bolts and nuts and fixed in the hanging of the screw, nut kink, silk button damage. The lower part of the expansion screw is suspended and the nut is not fixed.
3. Gypsum board ceiling cracking may also be because the big crane and the main keel connection, due to large deformation or not supporting the main keel clip in the middle of the big crane, not in the bottom of the crane force. Or in the hanging with the main keel connection, under the hanging vice keel, and the main keel connection, resulting in the main and vice keel between the active gap.
4. There is a fixed gypsum board self-tapping screw spacing is too large or part of the self-tapping nail force, as well as the gypsum board ceiling in the temperature of the thermal expansion and contraction of the air, by wet up shrinkage, Sewing tape construction process problems will lead to gypsum board ceiling cracking.
