Cracking of the light keel paper gypsum board ceiling project is localized

1. Whether the gypsum board in the cracked part belongs to a cross joint or a through joint before construction.

Solution: Fix the gypsum board with staggered lap joints during construction.

2. If the cracking part is at the right-angle junction part, it is the consequence caused by uneven stress.

Solution: The whole gypsum board at the right-angle junction is drawn out of the right-angle shape, which means that there is no joint in the right-angle part, and the joint is left in the top position of the straight line hanging.

3. The phenomenon of falling off belongs to the grassroots and has not been dealt with well.

Solution: Before scraping putty, brush the interface agent and do the base treatment.

Note: The rest of the previous ones have already been said! I add the following.

Are there any bandages on the cracks?

The bandages were not properly applied.

1. It may be that the seams between the plates are not well handled, so it is recommended to use two layers of bandages or cloths.

2. The local bolts of the suspension bar are not tight, the gypsum board is unevenly stressed, and there are cracks after a long time.

3. The span of the room is too large, the middle part sinks greatly, and the whole ceiling does not form a whole.

4。If the latex paint has been constructed, it may also be that the wind is too strong during the construction!

It may also be that the joints of the gypsum board are not treated with the inner figure-of-eight spelling, and the gypsum board is close to each other.

Thermal expansion and cold contraction, squeezing each other, cracking.