The ceiling of the living room and dining room is made of gypsum board, and after scraping the putty

The gypsum board is alkali-resistant, and it is best to brush the anti-alkali primer and then brush the topcoat after it is dry.

If the yellow dots are concentrated, it is a problem of gypsum board, and the treatment method: refer to the one upstairs: (1) If it is a problem with gypsum board (you can shovel off the putty on the surface), and find that there are yellow spots on the paper surface of gypsum board, the solution is to roll it over with 803 glue after the full batch is completed, and then brush the latex paint after it is completely dry.

It will definitely be solved. (2) If the gypsum board is alkaline, it is best to brush the anti-alkali primer and then brush the topcoat after it is dry.

If the yellow dots are evenly distributed and regular, it is that the sub-tapping wire has not been treated with anti-rust treatment, (the ceiling is not allowed to use nails to fix the gypsum board and keel), the solution, shovel off the putty with yellow spots, and do a good job of rust prevention.

If you find a regular company, ask for repair and compensation.

Are you using Taishan gypsum board + Nippon Paint Metroli paint? The answer is that the phosphorus in the plasterboard reacts with the lacquer. If you use Shili, you'll be fine. Brush Shi Shi Li after drying with 803.

The self-active screws on the ceiling are not brushed with anti-rust paint and caused by rust of the screws, the best way to deal with it is to remove the yellow dots, first point a little anti-rust paint, and then scrape the putty and roll the wall paint after drying.

The painter did not do the nail anti-rust treatment and asked for rework.

The yellow spots on the ceiling are caused by the lack of priming treatment or the poor quality of the priming paint. That is, if you want to completely solve it, you need to remove the original putty again and do it again. If you are afraid of trouble, reseal the primer on the existing latex paint, scrape the putty, and redo it.

But not as good as the first effect and longevity.

It is a problem with gypsum board (you can shovel off the putty on the surface and find that there are yellow spots on the paper surface of the gypsum board), the solution is, after the full batch is completed, roll it with 803 glue, and then brush the latex paint after it is completely dry. It will definitely be solved.

There are nails on the drywall, and the nail finish is not brushed with anti-rust paint, which is the same problem as on the wall. It's all due to rusty iron. It is only a matter of time before the problems that arise at the grassroots level, how to modify the surface, and the problems arise.

To cure the only way to cure the shed, do not brush the anti-rust paint in the position of the iron nails.

There are nails on the drywall, and the nail finish is not brushed with anti-rust paint, which is the same problem as on the wall. I heard the master of Sina Decoration Grab Foreman say that it was all caused by rusty iron. It is only a matter of time before the problems that arise at the grassroots level, how to modify the surface, and the problems arise.

To cure the only way to cure the shed, do not brush the anti-rust paint in the position of the iron nails. If mine helps, remember oh

When the ceiling is suspended, the gypsum board should be self-tapping on the keel, which should be caused by the self-tapping wire without anti-rust paint, and the same as the wall, due to rust.

The nail eye is not repaired, and many of these will be redone if you want to solve it completely, and whoever made it for you will let him rework.

Well, the anti-rust paint forgot to brush, the solution can only be shoveled off the putty powder where there are nails, after the anti-rust paint, brush the putty, brush the latex paint again, in the place of the putty, brush the whole body in the brush of latex paint, the overall effect is good.