How to solve the 6 common problems after painting the wall with paint?

1.

One possibility is that the surface is too smooth

Solution: Small areas of paint peeling can be sanded with fine sandpaper, then put on putty, brushed with primer, and repainted

2.

When the bubble is pierced, one case is that there is water coming out, which means that there is moisture infiltrating under or behind the paint layer.

Solution: For the former case of water, you can use a hot air spray gun to remove the foaming paint coating, let the wood dry naturally, then apply a primer, and finally repaint the entire repair surface

3.

Small cracks appear on the surface of the paint, mostly due to the use of incompatible paints, and the expansion coefficients of the upper and lower paints are different

Solution: In this case, use a chemical paint remover or a hot air spray gun to remove the paint and then repaint

Fourth, produce stains

There are many reasons for stains on the surface of paint coatings
.
For example: the water in the latex paint dissolves the material on the wall and rusts the paint surface, the wall surface rubbed with steel wool will produce rust spots, and the leakage of hidden pipes in the wall will cause stains
.

Solution: In order to prevent stains, you can first apply a layer of primer containing aluminum powder.
If there are stains, you can first remove the latex paint on the stains, brush the primer containing aluminum powder, and then repaint
.

5.
The paint film is wrinkled

Usually caused by a second coat of paint before the first coat is dry
.
At this time, the solvent in the lower coat will affect the upper coat, causing it to wrinkle
.

Solution: In this case, chemical mercury remover or heat can be used to remove the wrinkled paint film and repaint
.
Remember, you must wait for the first coat to dry before applying the second coat
.

6.
Rough paint surface

A newly painted surface is rough, usually due to a dirty paintbrush or contamination from the surrounding environment
.
It is also possible that the paint is mixed with paint, which has not been precipitated and filtered before use, or that the paint is dusty when it is still wet
.

Solution: To prevent the above problems, a clean paintbrush and bucket must be used
.
Before using old paint, be sure to filter it with paint filter paper or clean nylon stockings
.
In addition, the painted surface should be covered with a cover or cardboard when the paint is still wet to prevent dust
.
If the paint surface is rough, after it is dry, sand it smooth with wet and dry sandpaper, wipe it off, and then repaint the paint
.
Pay special attention to the fact that the paintbrush must be clean
.