After a month of painting the decoration of the new house, there are small cracks in some places, wh

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Cracks in the paint are usually caused by the settlement of the house, the construction is not in accordance with the specifications, or the ventilation time is not right.

1. Housing settlement.

After the house is built for a period of time, there will be a certain amount of settlement, which will lead to cracking of the house wall and affect the decoration effect of the coating. This situation has nothing to do with the quality of the paint and the craftsmanship of the master, and it needs to be repaired after the house has completely settled, so as to achieve the desired effect.

2. The construction is not in accordance with the specifications.

If you are making paint, you will scrape the paint directly if you do not check it. As a result, the moisture shrinkage of the paint is inconsistent, and the hollow mortar layer absorbs the putty moisture, resulting in the loss of adhesion between the putty and the mortar layer, resulting in cracking.

If in the process of painting, the old and new alternating walls are directly tied without hanging nets, and the walls are easy to crack after painting.

If the water and electricity trunking is not treated properly, it will start to be leveled when there is dust inside. This leads to cracking of the paint in the later stage.

If the hanging seal board on the side of the ceiling is not treated in a T-shape, it is easy to crack after the paint is done in the place where the gypsum board is locked in the later stage.

3. Ventilation is too timely.

Opening the window for ventilation too quickly when painting will accelerate the drying and shrinkage of the paint, which will lead to cracking of the wall. It is not recommended to open the window for ventilation after the paint, and it is recommended to let the paint dry as much as possible.

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A month after the painting, there are small cracks in some places, which may be caused by the deformation of the wall itself, or there is a technical mistake in the process of painting.

It may be caused by only one layer of putty, or it may be because the original quality of the putty is not good, coupled with the hot weather that causes cracking, so that the latex paint also has small cracks.

It was built at the same time, but the date of the renovation was not necessarily the same period, so the upstairs and downstairs or the neighbors next door were renovated, and the paint cracked due to wall demolition, impact drilling, and vibration.

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1. Thermal expansion and cold contraction.

It is normal to have thermal expansion and contraction, when scraping paint, because the previous process has just been completed, only the surface is air-dried, and the interior is still relatively wet, and after the last process is completed, the indoor wall is completely air-dried, at this time, there may be small cracks due to thermal expansion and contraction.

2. The grassroots influence of the wall.

When painting the wall, the requirements for the base layer of the wall are relatively high, so the base layer of the wall is one of the reasons for the cracks on the wall, because the quality of the wall itself can not meet the standard standards, no paint construction is carried out, the wall begins to appear cracks, it may also be that it does not appear at the beginning, but cracks appear after painting.

3. The foundation sinks naturally.

The subsidence of the foundation will also lead to small cracks in the wall, the subsidence of the foundation is not necessarily a quality problem, generally after the house is built, there is a sinking cycle, but as long as the overall uniform sinking, and the sinking is not very large, it does not affect the use, then do not worry too much.

4. Neighborhood decoration.

Although the house was built at the same time, the decoration time is different, so when the upstairs and downstairs neighbors are decorating the house, it will lead to problems such as paint cracking and small cracks on the wall.

5. Paint quality problems.

When painting the decoration of a new house, if the quality of the paint is not up to standard, then after the paint is applied, it will also lead to the problem of small cracks in the wall.

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<> a month after the renovation and painting of the new house, there are even small cracks that begin to appear in some places, what is going on? Personally, I mainly analyze from the construction aspect, and believe that there are the following reasons:

1. Housing settlement. After the construction of the house, there is a certain amount of settlement, because the settlement of the house can lead to the cracking of the wall of the house, which affects the decoration effect of the coating. No matter how powerful the paint master is, there is no way to stop the cracking of the paint, it can be said that there is no solution, and you can only wait until the house is completely settled, and then come to repair, it is possible to achieve the desired effect!

Second, the construction is not in place.

1. The wall painting layer is hollow.

situation. When making paint, there was no inspection, and the paint was scraped directly. This will lead to the paint after scraping, the moisture shrinkage is inconsistent, and the putty is putty.

The water is extremely absorbed by the hollow mortar layer, and the moisture is lost prematurely, so that the putty and the mortar layer lose their adhesion, which will cause the putty layer to bulge, crack and peel!

2. The treatment of the old and new alternating walls is not in place. No wire or fiberglass mesh is used to pull knots during the painting process, and then it is painted! Such a painted wall itself is prone to cracking. Even when making paint in the later stage, there is fiber mesh and kraft paper.

Even if it is bonded, it is also easy to crack.

3. The treatment of water and electricity line ducts is not in place. Even after opening the trunking, the trunking has not been treated, it is full of dust, when the trunking is repaired, at most a little water, the dust has not been treated, and it begins to be leveled. The trunking repaired in this way is also prone to hollowing, cracking, and leading to cracking of the paint in the later stage!

4. The ceiling construction is not in place. There is no T-shaped treatment when the ceiling side is hung and sealed, and the corner is too close to the corner when the auxiliary dragon is arranged, resulting in the gypsum board of the auxiliary dragon lock in this place in the later stage.

is where the stress is greatest. It is also easy to crack after the paint is done!

5. The material of the junction surface is different. At the junction of different materials such as wood veneer, metal surface, tile surface and coating, due to different materials and properties, the shrinkage performance of the material is different, so in these places, there is often a phenomenon of paint cracking!

3. Ventilation is too timely. This is to open the window for ventilation immediately when brushing the paint, which will accelerate the air-drying shrinkage of the paint film, so that the paint will crack. Therefore, it is generally not recommended to open the window for ventilation after the paint is done, or just open the window a little and ventilate.

Try to let the paint dry in the shade.

It may be caused by the room being too dry, or it may be because the wall is not flat enough, and the quality of the materials used is too poor, all of which can lead to small cracks, which can be repaired with paint of the same color, or you can choose to remove all the paint and repaint the wall before painting.

Caused by foundation subsidence, the wall cracking caused by foundation subsidence is accompanied by latex paint cracking phenomenon, and the house has an inevitable settlement cycle of 1 or 2 years after it is built.

It may be a phenomenon of thermal expansion and cold contraction, because when scraping the paint, a process has just been done, the surface is air-dried, and the interior is still wet, and it may also be that the base layer of the wall affects the wall painting, and the requirements for the base layer are particularly high, and the quality of the wall itself is not up to standard, and cracks have appeared in itself, and the phenomenon will appear after the paint is not found at the beginning, and it may also be that the upstairs and downstairs neighbors next door are decorated and the upstairs and downstairs neighbors are affected by the decoration and demolition of the wall, resulting in paint cracking.

1. The cracking of the putty layer will cause cracking on the surface of the wall.

Wall scraping putty can make the wall look smoother and more delicate, and the flatness is much higher than that of the cement wall, so that the wall painting effect is better, and it can also save paint. However, if the putty layer cracks, it is easy to cause cracking on the surface. Therefore, it is necessary to avoid cracking 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.

2. Cracking of the plastering layer can be avoided by abnormal cracking.

The cracks of the wall plastering layer are divided into two kinds: normal cracking and abnormal cracking, normal cracking mainly refers to the cracks in the plastering layer caused by the shrinkage of cement mortar, and the non-normal 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, hollowing, or falling off, you can paste a good cloth all over the wall, and then paint it according to the normal process.

You can use putty to refill the gap, and then apply paint again, if it is only a small gap, you can directly cover it with paint.

Apply the interface agent. After shoveling the wall skin, clean the base layer to ensure that it is free of dust and stains, and then apply the interface agent. This is conducive to better adhesion between the interface agent and the wall.

After brushing the wall paint once can be covered.

1. Pressure grouting method: the air compressor will pour the adhesive into the cracks of the brick wall and re-bond the cracked walls together.

2. External force repair method: open the original gap, repair it with elastic putty, or use a good cloth to fix it.

In most cases, cracking in the wall is caused by the evaporation of moisture in it. Moisture may continue to evaporate, so it may continue to crack even if it is repaired. In addition, if you only repaint a small area, there will be a color difference between the new paint and the old paint.

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This was supposed to be used when laying the base, and the seam king would not be,

1. If it is close to a straight line crack, it means that it is because of the internal problems of the wall, or the foundation has a slight settlement, or the original feeding port of the wall. The wall paint and putty must be removed, the cracks must be opened a little bigger, made into a V-shaped small groove, and then sealed with quick-adhesive powder, pasted with white latex caulking tape, and then processed putty and latex paint. 2. If the crack is cracked, it means that the sand and ash on the wall are small and the ash layer is cracked.

It is necessary to eradicate the original latex paint and putty after the wall painting interface agent, scrape the flexible putty, and brush the elastic paint, so that it will be completely solved.

1. The main reasons for the cracks in the concrete wall are the reasons for the concrete itself and the reasons in the construction process, and such cracks can be repaired by automatic low-pressure grouting method.

2. Cracks in brick masonry walls, cracks in new partition panels and cracks in walls of different materials are temperature joints, which cannot be repaired by grouting due to the changes in cracks, so flexible materials should be used for repair.

In addition to water and safe and harmless different types of polymers or polymers, it also contains a small amount of emulsifier and a trace amount of unpolymerized free monomer, the free monomer is some volatile small molecule substances, there are different degrees of toxicity problems, the concentration of free monomer in environmental protection paint is controlled below, and the dosage of additives is more than 2% to 3%.

Causes of cracks in the wall:

1. There are cracks in the warm layer of the original house, which leads to cracking of the wall after decoration;

2. Improper repair and painting after wall slotting, resulting in cracks in wall shrinkage;

3. The ratio of cement when plastering is not accurate, and it is easy to crack if the ratio is high;

4. The ratio of wall putty is improper or uneven scraping;

5. The ratio of latex paint and water is not suitable;

All of the above non-standard operations will cause the wall to crack.