What should I do if there is a crack in the wall? How to deal with cracks on the wall

How to deal with cracks in the wall?

1. The plastering layer is cracked.

The cracks of the wall plastering layer are divided into two types: normal cracking and abnormal cracking, and normal cracking mainly refers to the cracks in the plastering layer caused by the shrinkage of cement mortar; Abnormal cracking is mainly caused by improper materials or construction technology. Normal cracking is difficult to avoid, but abnormal cracking can be avoided.

Treatment method: If there is a large area of hollowing in the plastering layer, the original plastering layer should be knocked out, the plastering layer of cement mortar should be redone, and then painted according to the normal process after leveling. However, the cost will be relatively higher after this treatment.

If there is only a small area of cracking, there is no sand turning, hollowing, and falling off, you can paste a good cloth all over the wall, and then paint according to the normal process.

2. Cracking of the putty layer.

Wall scraping putty can make the wall more smooth and delicate, and the flatness is much higher than that of the cement wall, so that the wall painting effect is better, and it also saves paint. If the putty layer cracks, it is also easy to cause cracking in the surface layer. Therefore, it is necessary to pay attention to avoid cracks in the putty layer during construction.

Treatment: If the crack has penetrated deep into the putty layer, you can first use a sharp tool to expand the crack to a cone size, fill in the caulking plaster and polish and level, paste the mesh cloth or kraft paper and then use putty for leveling, and finally paint or paste wallpaper according to the normal process.

Treatment suggestion: First of all, you can directly use latex paint to repair. The specific method is to brush the latex paint once in the cracked position without shoveling.

At this time, although there is a color difference, it can be repaired. In addition, you can also paste some decorative paintings or hang some decorative paintings to cover up.

Another measure that can be taken is to eradicate and rebuild. At this time, the cracked surface of the latex paint layer is gently shoveled off. Of course, it is necessary to paste masking paper around the area in advance to avoid damage to the area.

Then you can repaint the latex paint, which can also be repaired.

The cracks on the wall generally have temperature cracks, settlement cracks, and structural cracks, and different crack structures have different solutions.

1. Temperature cracks: The common cracks in the house cavity have little impact on the structural safety of the house, because they will only affect the appearance of the house and will not affect the safety of the house. Remedy:

In the cracked places, we can paste non-woven fabric, paste PVC mesh cloth or sew it with mortar, and then apply paint.

2. Settlement cracks: Settlement occurs slowly, and after settlement cracks occur, we should repair the cracks after they are stabilized. The base for new homes will gradually stabilize over a period of 2 to 5 years.

After the crack is repaired, the wall may still crack due to the sinking of the base, so you don't have to worry too much. If the crack has little to no effect on the overall aesthetics of the house, it can be repaired after a long time. Repair usually pastes it with cement mortar, putty or cement elastic putty, plaster filling and caulking tape.

3. Structural cracks: Hu draft's ordinary decoration methods cannot be repaired, and there is no way to repair them, at this time, we should find professional building structure personnel to repair it according to the specific situation, and adopt some good measures.

This answer applies to the treatment of cracks in the wall.

1.Cracks in straight lines from the inside out. This is the reason for the settlement of the building itself.

For example, a new home will have a sinking foundation within a year or two of the first occupancy, and then gradually enter a period of stabilization. In the process of settlement, the wall will have horizontal or oblique cracks due to uneven settlement. Do not take any measures against the base layer during the settlement process, and wait for the settlement to gradually stabilize before dealing with the cracks.

Treatment: Shovel off the cracked wall of the base layer - paste anti-crack bandage - batch putty - brush latex paint. 2.

Local cracks and even cracks are more obvious. This kind of crack can be scraped off with a shovel blade after the heating is over, and then putty and latex paint are brushed. However, there will be a global and partial color difference.

It is recommended that the owner leave the leftover latex paint from the previous decoration, and when repairing it again, the original latex paint can effectively reduce the color difference.

3.Very subtle shallow cracks. This kind of crack is related to the wall being too dry in winter, do not rush to repair it after the end of heating, generally after the relatively humid climate in spring, the crack can heal on its own.

1. The reasons are as follows:

1. The powder content in the bottom file wall paint or paint is high, and the one-time coating is too thick during construction.

2. In the construction at the bottom temperature, the wall paint or coating is not completely filmed.

3. The wall absorbs water too quickly, and the wall paint or paint has not had time to form a complete coating film, and the water will be absorbed by the wall.

4. When painting wall paint, the poor painting tools affect the uneven thickness of the wall paint or paint when painting.

2. The handling method is as follows:

1. Gently polish the joints and repaint the wall paint once.

2. Choose high-quality wall paint or paint as much as possible during construction, and do not paint too thick at one time.

3. Be sure to construct above the temperature specified in the product manual.

4. Before the wall paint or paint is painted, the base layer should be treated, and the sealing primer should be painted after the treatment is completed.

5. Choose high-quality construction tools as much as possible and paint them in place.

Then you first determine what is causing the crack in the wall. If the crack is not there, you can re-brush it yourself.

First understand what causes cracks in the wall, and then deal with them.

There are many causes of cracks, mainly related to temperature and humidity.

If your wall is just cracks and not hollow, and the wall is already dry, then you don't need to scrape it off, just scrape the latex paint putty, scrape the latex paint putty twice, and finally spray latex paint.

If your walls are cracked or hollow, you have to scrape them off and start over. Then use gypsum-based mildew-proof and water-resistant batch soil to make the next process after the batch is full. If you have more questions, you can click on ID to consult.

It depends on what wall you are on, and what causes the cracks, and it is useless to patch them up without finding the cause.

Wall cracking is a natural phenomenon, like falling leaves in autumn. Nowadays, the emulsion paint that is usually painted forms a certain toughness after being painted, which is to cover this tiny natural phenomenon. That is to say, the tiny cracks can be covered, and the larger ones will pull the paint film apart, which is what you call cracking.

What will cause a big crack is told below. 1. Due to seasonal reasons, the construction is carried out in autumn and winter, and then it enters the heating period, and the humidity is not enough, resulting in cracking. 2. After the decoration, it was not moved in immediately, it was vacant for a long time, there was no water, and the indoor humidity was not enough, resulting in cracking.

3. Local cracking, which may be caused by the construction hole of the building structure and the inadequate treatment of the base layer, and the cracks are horizontal and vertical. 4. Caused by structural settlement, only one wall is cracked. 5. In the decoration of the old house, the original wall is cracked, and the new painted base layer is not effectively treated, resulting in cracking again.

Repair principle: Regardless of the reason, the renovation company is obliged and responsible for repairs.

Repair method: 1. There are few cracks, remove the latex paint and putty at the cracks, paste the bandage and then scrape the putty and paint. 2. There are many cracks, the paint and putty at the crack coverage are removed, and the wall cloth is pasted and then the putty is scraped and painted.

Another few small knowledge to tell you: 1. The painting process of light wall (non-load-bearing wall) should first be pasted with sealing wall cloth and then scraped with putty and painted. 2. The construction hole should be pasted with a bandage first, and then the cloth should be pasted and then the putty should be scraped and painted.

3. The tinting of latex paint does not affect the quality of the paint, and it does not affect any color. 4. Three trees, Dulux and Nippon are the best brands of latex paint in China.