What to do if the ceiling is sprayed with latex paint and the gypsum board is yellow

There are two reasons: one is that the gypsum board of BAI is a chemical gypsum product, and some chemicals contained in the raw materials.

The DAO substance is not treated cleanly, resulting in the yellowing of the gypsum board ceiling. Second, the construction process is too fast, the environment is humid, and the ventilation is not good, resulting in the damp and yellowing of the gypsum board (mainly the gypsum board of chemical gypsum).

Precautions: Gypsum board made of natural gypsum is better. Yellowing is rare.

Because there are fewer chemicals in its raw materials. And it's safe and environmentally friendly. It is good to recommend a natural reinforcement product of Jinlong Star produced by Jingtai County Jinlong Chemical Building Materials that I have used.

Prevention during construction: Strict attention must be paid to ventilation in the construction process, and after the first process is completed, the next process can only be carried out when it is completely dry. This is especially important during the rainy season.

After-the-fact treatment: if yellowing has already appeared. Then only use bamboo charcoal-based film glue to brush both sides of the yellowed part with a roller brush, wait for drying, and then brush with latex paint twice, and then spray wall paint on the surface and other final processes.

For some corners, you can use a wool brush to delicately brush it.

Detailed explanation of the problem of gyplight board: there are several possibilities for gypsum board to be yellow.

Putty, the base containing putty must be yellow.

The wood is yellowish. The polyester varnish is translucent.

The oil is yellow. The rust is yellow.

It is also possible that the brush shaft rusts and mixes with the paint during painting, or that the paint from the wood brush rod turns yellow and mixes into the paint bucket.

There was no plagiarism.

The bottom treatment or the poor quality of the paint used for the primer is caused by the yellowing. There is no approval of putty according to the construction process, the first putty is not finished when the ash is not finished, and the color will quickly penetrate outward, as well as in the primer and topcoat, the time is too short, the paint is not finished, this situation will occur, because the paint used is water-based paint, and two or three brushes will be carried out without drying thoroughly, and the color will penetrate outward with the moisture, so this will happen.

Remedy: 1. If you want to solve it completely, 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, and then scrape the putty;

2. If there is a problem at the grassroots level, do not brush the anti-rust paint at the position of the iron nail.

Why do you copy the yellow? The main reason is that the wall is too damp and wet, and when the BAI paint is brushed, the moisture seeps out and du

The yellowing caused by zhi may also be the color difference of the paint DAO itself, and the yellowing will occur after the paint has been used for a long time.

Generally speaking, yellowing is difficult to deal with, if the area is relatively large, there will be traces in time, so most of the paint yellowing needs to be refurbished on the wall. However, we can use some methods to prevent the paint from yellowing after the paint is brushed.