What happens when gypsum board and multi layer board ceilings are brushed with latex paint and bulge

The bulge may be due to the fact that the screws are not tightened, try to drill in it again with a hand drill. Be careful not to drill too hard to prevent the drywall from breaking.

The gypsum board and multi-layer board ceiling is brushed with latex paint, which may be caused by the following reasons:

The thread is not well treated: before the installation of the multi-layer board in the hidden bird, if there is no special treatment at the joint, there will be a large thread, which will affect the flatness of the entire ceiling surface, resulting in the phenomenon of bulging after painting.

Latex paint dries too fast: After brushing latex paint, due to ambient temperature or humidity and other early reasons, the paint dries quickly, resulting in inconsistent color and tensile strength of each part, and shrinkage force when drying, causing local bulging on the surface of the ceiling.

Deformation of the base material of the ceiling: During the installation or use of the ceiling, if the base material is deformed or sinking, it will also cause the surface of the ceiling to bulge.

In view of the above problems, corresponding measures should be taken:

Handle the screw: Before installing the multi-layer board, make sure that the joints are very smooth to avoid larger screws.

Choose the right paint: When painting latex paint, you should choose a paint that is of high quality, has a long drying time, and has less impact on the base material.

Do a good job in the foundation of the ceiling: when installing the ceiling, it is necessary to ensure the flatness and bearing capacity of the basic material, so as to avoid the bulging of the surface of the ceiling due to problems such as material deformation or sinking.

In short, before painting gypsum board and multi-layer board ceilings, it is necessary to make various preparations and choose appropriate materials to avoid the situation of screwing out. If this is already the case, you can take appropriate measures according to the specific situation, such as re-repairing the gaps or replacing the base materials.