Why does the ceiling crack? What are the prevention and treatment methods?

Ceiling is a common way to decorate the ceiling indoors. Although the ceiling has a good decorative effect, many community owners are still complaining that the ceiling of their home has cracked for a short time. In fact, if they want to repair the cracks in the ceiling.

First, find out the cause of the cracking of the indoor ceiling, so it is best to take preventive measures to solve it when decorating indoors. Today, we are going to find out what are the causes of indoor ceiling cracking and how to prevent it. I look forward to helping you. What are the causes of indoor ceiling cracking?

There are generally several reasons for the cracking of indoor ceiling, such as large ceiling, settlement of foundation in the house, deformation of ceiling raw materials when gas is used, and cracks caused by temperature difference of air conditioning blowing in the house. In fact, let's look at the details shown below:

1. Surface cracking of car paint: If only strip-shaped, multi-legged or uncertain cracks are formed on the ceiling paint layer, the problem is not serious. This may be the first time, because the brush coating is too thick or manual labor is not applied, the substrate is too loose or not smooth, and the top coat and paint do not match.

Repair scheme: remove the affected paint layer; A construction paint layer should not be too thick; Make sure that the first layer of paint is dry before painting by hand; When necessary, it is necessary to seal the substrate with a suitable topcoat; For the substrate with large surface roughness, use items with good flexibility; When the ambient temperature of the substrate is lower than 5℃, the wall paint cannot be applied; Topcoat and paint shall be equipped with facilities.

2. Caused by temperature change: Cracking caused by temperature change is generally not a big problem, only endangering the surface layer, and it is not easy to involve the safety factor of the ceiling lamp. Repair scheme: it is not recommended to paste a layer of kraft paper bag and then brush decorative board architectural paint; If the gap is too big, it is best to cut a gypsum board, polish it to suit your own appearance, make up for the gap, and then brush the decorative board architectural paint.

3. Unreasonable construction leads to cracking: check the main keel first, and then check the grade of decorative materials after the quality problems of the underlying products are dealt with. If the ceiling lamp is seriously deformed or damaged, the total demolition area can be expanded, and the main keel can be renovated according to the normal construction steps after leveling.

The above is a brief introduction about the causes of indoor ceiling cracking. I believe that according to the above detailed introduction, everyone will have a further grasp and understanding of the causes of ceiling cracking. Once cracks appear in the natural ceiling, it will not only affect the settlement safety, but also continue to destroy the family's home improvement effect.