Gypsum board ceiling cracking causes and what is the solution

Gypsum board ceiling has the advantages of lightweight, environmental protection, so many people will choose this ceiling when decorating. But gypsum board ceiling will crack after a long time, then gypsum board ceiling cracking causes and solutions is what? Next, I'll introduce you to the relevant content, take a look.

What are the reasons and solutions for the cracking of gypsum board ceiling

1, the cracking of gypsum board ceiling is generally cracked at the joints, the cause of cracking is usually the keel frame is not stable enough, not enough flatness or structural instability. In addition to reinstallation of the ceiling in this case, there is no other feasible way, even if the repair, it is easy to crack again. Therefore, in the construction of the time, can not be less than the level of the line this step, the strength and density of the keel should be in strict accordance with the standard specification, so as to ensure the stability of the keel structure.

2, the junction of gypsum board and other materials, the expansion and contraction ratio is inconsistent, resulting in cracking. In this case, you can in the conditions allow, the gypsum board directly from the bottom of the beam as a whole over the beam, and then the top of the beam wrapped inside the ceiling, do not leave a gap between the top of the beam and gypsum board. This method has a disadvantage, that is to lower the ceiling by one centimeter, but one centimeter will not be very obvious.

3, gypsum board joints, the process is not properly handled, resulting in cracking. Gypsum board and gypsum board splicing is very important, gypsum board itself is not easy to crack, but the splicing is not handled properly, it is easy to crack. When splicing gypsum board, it is best to control the size of the seam between 3 mm and 5 mm, if the caulking gypsum is used too much, it is easy to cause cracking. If the expansion distance is not enough, it is easy to crack because of extrusion. So it is best to use the v-groove picking process, and then fill the caulking plaster, hang the mesh and scrape the putty.

4, the ceiling process is not properly handled, resulting in cracking. Ceiling will have corners, and the corners are generally L-shaped or T-shaped, in these locations must use the whole piece of gypsum board. Because the corner of the place of gypsum board installation direction is not the same, if you use the splicing, it is easy to later because the stress balance is not consistent, and lead to cracking at the joints.

Article Summary: The above is a small introduction to the gypsum board ceiling cracking causes and solutions is what the relevant content, I hope to help some friends in need.