What are the methods and materials for dealing with cracks on the wall?

1. Cracking of the wall structure.

Cracks in the structural layer of the wall itself can also lead to cracks in the surface wall. There are two situations, one is that the original wall itself has cracks, and no appropriate treatment measures have been taken in the later decoration process; Second, the original wall was decorated without cracks, but cracks occurred in the later stage due to uneven foundation settlement and large temperature changes.

Solution: This kind of cracking can not be repaired by ordinary decoration methods, and it is necessary to find professional building structure personnel to take corresponding measures according to the actual situation.

2. Cracking at the joints.

Cracks in the base layer of wall joints can lead to cracks in the surface of the wall. The cracking of the joints mainly occurs at the joints between the reinforced concrete shear wall and the ceramsite bricks, the joints between the reinforced concrete beams and the ceramsite bricks, the doorways of the back blocking, and the joints between the gypsum board partition wall and the original wall. The cracking of the joints is mainly due to the influence of the surrounding environment or external forces, gypsum boards, prefabricated partition panels and prefabricated floor slabs will shrink and change their positions, resulting in cracks at the joints, which are generally vertical joints or horizontal joints.

Solution: It is recommended to wait for the deformation of the whole building to stabilize after the repair, and the repair within a short period of time is prone to recurrence.

3. 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.

4. Cracking of the plastering layer.

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.

5. Cracking of the paint layer.

The cracks on the wall surface caused by the cracking of the wall paint layer are mainly caused by the poor quality of the wall paint products and the improper operation in the construction process of the wall paint.

Treatment: If it is only a crack on the surface of the paint film, use fine sandpaper to polish the crack off, choose the same color wall paint, and repaint it. Hope.

The main reason for the cracks is due to the poor quality of the putty, and I personally think that the way to deal with wall cracks is to shovel off the original wall paint, polish and clean the wall, then brush with high-quality putty, and finally brush the primer and topcoat.

Sandpaper, putty leveling, and painting.

Hanging net, that is, non-woven mesh.

If there are cracks in the wall, it should be repaired first and then painted, and I heard people who have decorated said that they should use putty to fill the cracks.

How to deal with cracks on the wall:

1. Sandpaper sanding.

Cracks in the wall paint layer are a relatively common crack, mainly because of the cracking of the wall paint layerThis crack is mainly caused by improper wall paint painting construction or poor quality of wall paint products, for this crack can be sanded with fine sandpaper, and then repainted with the same color paint.

2. Professional repair.

The cracks in the wall structure layer are mainly caused by the irregular settlement of the wall foundation or due to the excessive temperature difference, which is usually difficult to repair, and it is best to find professional structural construction personnel to take corresponding measures according to the actual situation.

3. Repair with polyester cotton strips.

There will be cracks in the plastering layer of the wall, mainly because the cement mortar shrinks after drying or because of the poor quality of the material and construction technology, if there are cracks in the plastering layer, it needs to be knocked off and re-leveled and painted, but it will be relatively high, if the wall is only a small area of cracking, there is no hollowing, falling off and other phenomena, polyester cotton cloth can be pasted on the wall, and then painted.

4. Repair with kraft paper.

If the putty layer of the wall cracks, it will also lead to cracks on the wall, which is mainly caused by improper construction treatment, if the cracks go deep into the putty layer, you need to use sharp things to expand the cracks to a cone size, and then fill in the plaster and polish, and then paste the mesh cloth or kraft paper and then use putty to level, and finally paint or stick to the wall.

5. Use mortar and gypsum powder.

Different materials have different thermal expansion and contraction properties, and in the case of excessive temperature changes, deformation can occur, resulting in cracks in the wall surface. We can first plug the cracks with non-woven fabrics, mortar, gypsum powder, etc., and then apply them to the cracks.

A variety of different cracks.

How to deal with it:

1. Temperature cracks - the most common house cracks, which have little impact on the safety of the house structure, this kind of crack only affects the indoor appearance of the house, and will not affect the safety of the house.

2. Settlement cracks - when the settlement development is slow and there is a weakening trend after the occurrence of settlement cracks, the cracks should be repaired after the cracks are stabilized. It takes 2-5 years for the foundation of a new house to stabilize and you don't have to worry too much about the possibility that the walls will crack due to the subsidence of the foundation after the cracks are repaired. If the crack has little impact on the overall aesthetics of the house, it can be repaired after the first repair.

The repair is generally filled with cement mortar, polymer mortar or elastic putty and gypsum, and the caulking tape is pasted.

3. Structural cracks - ordinary decoration methods cannot be repaired, and professional building structure personnel must be found to take corresponding measures according to the actual situation.

4. Cracks in latex paint on the surface Wallpaper cracks: If it is only a crack in the surface paint film, use fine sandpaper to polish the crack off and repaint it. If the wallpaper is cracked at the joint, moisten it with warm water and re-apply the wallpaper glue to paste.

5. Putty screed cracks: If the cracks have 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 grid cloth or kraft paper and then use putty for leveling, and finally paint or paste wallpaper according to the normal process.

6. Cracks in the plastering layer of cement mortar: 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 or wallpaper should be painted or pasted according to the normal process after leveling. However, the cost will be relatively higher after this treatment, and the owner can choose the repair method according to his own economic ability.

If there is only a large area of cracking, there is no sand, hollowing, or falling off, you can paste a good cloth all over the wall, and then paint or paste wallpaper according to the normal process. The relatively low cost is to nail a layer of gypsum board directly on the original wall, which requires environmentally friendly milky white rubber and steel nails to be used at the same time.

7. Cracks at joints: It is recommended to repair the whole building after the deformation tends to be stable, and the repair within a short period of time is prone to recurrence.

There are small cracks on the wall, you don't care about this phenomenon, over time, water and air slowly follow this small crack into the wall, the crack will become bigger and bigger, easy to cause the wall to peel and fall off. In general, there are several types of reasons for wall cracks: one is caused by the structural problems of the building itself; the other is the use of inferior decoration materials, such as inferior latex paint; or caused by non-standard construction technology, such as 1. Cracks in the cracks between the wall insulation board and the board; 2. The wall is slotted, and the trunking fills the shrinkage cracks caused by the plaster; 3. Stress cracks caused by uneven plastering and scraping putty.

Are there any tips for dealing with this kind of wall crack? For small wall cracks, just use the same paint as the wall to paint again, pay attention to the dilution ratio of the paint to have a certain change, when diluting, add a little less water, slightly viscous than the normal painting, so as to increase the viscosity and hiding power of the paint, stir the paint evenly, and then you can paint. The painting method is also very important, in the process of flat coating, brush vertically down at the cracks, let the paint penetrate into the cracks of the wall, and then evenly paint the wall flat, after painting the cracks, wait for one to two days after the paint is completely dry, and there is no moisture to the touch before the second painting.

For larger cracks, we have to play a layer of putty in advance, small packages of putty powder are very cheap, two or three yuan can be purchased from the building materials market, first add water to the putty and reconcile, and then use putty to fill the cracks, and so that the putty is dry, use sandpaper to polish the wall flat, and then brush the paint twice.

After the renovation of the new house, after living in it for a while, some residents will have cracks, and some people are very depressed, not knowing what is going on, and they don't know how to repair it, so let's look down togetherExperience in how to deal with cracks in the wallLet's do it!

1. Temperature cracks: Common cracks in the house 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. There are a few remedial measures that we can all take:

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

2. Settlement cracks: The time of settlement is relatively slow, after the settlement cracks occur, we should carry out a series of repairs to it after the cracks are stabilized. The base for new homes will gradually stabilize over a period of two to five 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: ordinary decoration methods can not be repaired, and there is no way to repair them, at this time, we should find professional building structure personnel according to the specific situation, repair it, and adopt some good measures.

1. The quality of the wall paint we used at the beginning was not very good, and it was not up to standard, or it was formed by improper operation in some places during the construction of our wall paint.

2. The temperature is too low, and the film-forming temperature of the wall paint cannot be reached and a continuous coating film cannot be formed, resulting in cracking of the wall paint.

That's the end of the above introduction, I believe that after reading it, you should also grasp it a lot!

You can get it for free

There are several common ways to deal with cracks in the wall: The cracks in the surface latex are sanded with sandpaper and repainted The putty layer is broken, first sanded, a layer of Niuzen cracked skin paper is pasted, and finally the putty is used for the last time. Cracks appeared in the cement layer of the original wall plaster, and the latex paint layer on the wall needed to be removed and then filled with mud.

Crack cracking in the wall refers to the third way of repair.

1. Why do latex paint wall cracks occur?

1. I bought a poor quality latex paint.

The quality of latex paint on the market is still very different, although it is difficult to distinguish from the appearance and smell, but when the brush is on the wall for a period of time, the difference can be found. Inferior latex paint is often missing or replaced by other components, resulting in poor performance of latex paint and easy to lead to wall cracks. In particular, the artificial glue in latex paint is more likely to cause cracks on the wall surface of latex paint after it is replaced or the composition is reduced.

2. The base layer (putty) is not treated well before the wall is painted with latex paint.

This situation is mostly because the putty is not evenly scraped on the wall, resulting in cavities in the wall, and the air inside will cause cracks on the wall due to air pressure. Sometimes latex paint is applied before the putty is completely dry, which can also lead to air accumulation in the wall and eventually cracking.

2. How to repair latex paint wall cracks.

1. Small cracks.

First of all, the base layer of the wall should be cleaned in the cracks on the wall, and then we paste the cracks with white tape, and then apply putty and brush latex paint. In the case of relatively small cracks, it is suitable to repair them in this way.

2. Irregular cracks.

You can also remove the insulation board on the surface of the wall, or remove the cement wall, install a layer of gypsum board or "five-mile board" outside the insulation layer, and then paint latex paint on it. This method can remove all the irregular cracks, but this method is expensive and difficult to construct, and it may be more troublesome if you repair it yourself in the general family. If the latex paint wall cracks at home are not very large, it is better not to use this method.

3. Elastic putty.

Another way to repair is to use elastic decorative materials. At present, there is a material called "elastic putty" in the method of wall substrate treatment, which can make up for the problem of wall cracks to a certain extent. Of course, these materials themselves are less "elastic" and may not be very effective on walls with large cracks.

4. Professional maintenance.

Find workers to repair or call ** to the decoration company to maintain. This method is the easiest, except for a certain amount of repair costs, you don't have to worry about the rest.