What is the cause of cracks in freshly brushed latex paint

The wall is not treated well, and it is also related to the paint.

The cracking of latex paint is caused by cracks in the cement of the wall, or cracks in the joints of the "insulation board" of the wall, which is not a quality problem of decoration, but an insurmountable defect in construction.

1. After the wall substrate is cleaned, a layer of good cloth, kraft paper or newspaper is pasted on the wall, and the tension of the fiber is used to ensure the integrity of the latex paint film. PS: This method is relatively simple and easy to implement, but the effect is mediocre.

2. Remove the insulation board on the surface of the wall, or remove the cement wall, install a layer of gypsum board or "five-centimeter board" outside the insulation layer, and then make latex paint on it. This method can remove all the irregular cracks, and the cracks are generally the joints between the plates, which are easier to deal with. However, this method is expensive and difficult to construct.

3. Adopt decorative materials with elasticity. At present, in the treatment of wall substrate, there is a kind of "elastic putty" that can make up for the problem of wall cracks to a certain extent. However, these materials themselves are less "elastic" and do not work on walls with strong cracks.

4. Some owners simply remove the insulation layer of the wall. Although this method can be used once and for all, it will reduce the thermal insulation and thermal insulation performance of the wall, so it is not recommended for everyone.

Wall paint cracking is a lot of new homes for owners, and after a period of renovation or even a very short period of time, you will find more or less cracking on the river surface. The cracking of the paint film on the surface of the wall will seriously affect the visual effect of the decoration of the wall. It can even cause the paint film to crack, which will affect the life of the wall.

If only the crack of the surface. Just use fine sandpaper to sand off the cracks, and choose the same color of the wall area to repaint.

There are five conditions that can cause the wall to crack.

1. There are cracks in the insulation 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 is not accurate when plastering, 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 these non-standard operations can lead to cracking of the wall.

If it is a lightweight partition wall, generally use good cloth or kraft paper, the partition board itself is also prone to small cracks, so in order to minimize cracking in home decoration, it is best to paste a good cloth, if it is a load-bearing wall or solid wall, the reason for cracking may be that the putty is too thick during construction or the interval is short, and the putty is not dry.

For the old wall, the original base putty and paint are required to be removed during the construction, and the base layer is re-treated and then painted.

Is there a crack in the latex paint, or there are cracks in the putty scraped, if the latex paint is cracked, it can be slightly sanded after drying and then brushing the latex paint. If the putty cracks, fill the gaps with putty after drying, and then polish and brush latex paint after drying.

Scrape off the original putty powder, seal the cracks with quick-sticky powder, and after drying, scrape the putty again, paint it, and it's OK.

If the joint is opened, there is no kraft paper tape. You can shovel a little along the gaps, put it on with plaster powder, then stick it with a sticker, then scrape it white, touch it, and paint it.

There are three ways to do this:

1. If the degree of cracking is relatively light and does not affect the appearance so much, you can change after a season after painting, and then repair after the matrix base structure is stable, after all, repeated maintenance will affect daily life.

2. Focus on the maintenance of the base layer: at the cracks, we first clean the base layer, remove the width of 5 cm, pour the V groove at the gap, fill it with elastic caulking paste, paste kraft paper or fiber mesh——— putty on the surface ——- polish and paint.

3. Remove the insulation board on the surface, or remove the cement wall, install a layer of gypsum board or "five-centiboard" outside the insulation layer, and then make latex paint on top.

Causes of cracking of wall latex paint:

1. Cracking of the paint layer.

This cracking is generally a congenital cause. 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.

The temperature is too low to reach the film-forming temperature of the wall paint and cannot form a continuous coating film, resulting in cracking of the wall paint. The treatment method is to use fine sandpaper to polish the cracks off if it is only a crack in the surface paint film, choose a wall paint of the same color, and repaint it.

2. Irregular cracks.

This type of crack is also relatively common. 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.

This material is relatively unfamiliar to many friends. 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.

1. If there is a problem of cracking on the latex paint wall, different solutions need to be taken in combination with the cause and the cracking. Some of them are caused by the temperature environment, in which case we can remove all the paint, including the putty layer. Next, a V-groove is drilled along the crack, and the gap is filled with plaster.

After drying, the surface is pasted with kraft paper, putty is scraped again, and latex paint is brushed after polishing, which can bring about repair.

2. If there is cracking and chalking, it may be that the wall has not been treated, or it is constructed in a low temperature environment, resulting in chalking and cracking of the latex paint layer. In this case, it is necessary to apply a layer of putty after shoveling, and it should be sanded and smoothed. By applying a water-based primer to the back cover, and then brushing two layers of paint on the surface, it can avoid cracking again in the later stage.

There is one less process in your construction, that is, after the first wall leveling, the wall should be covered with non-woven fabrics, and then the putty should be scraped and leveled and then brushed with paint, because the current buildings are all internal wall insulation, if you do not stick the cloth in the construction, the wall must be cracked. It is recommended that you negotiate with the construction team to re-construct in accordance with the construction specifications, and only in this way can you ensure the quality of your decoration.

You can polish it, clean it up, scrape some glue and paste it on the adhesive net, and then scrape the paint and brush the latex paint.

The cracks between the plasterboard and the wall should be treated before applying latex paint. Why didn't the painter put on the bandage, you ask? It is difficult to repair the latex paint after it is brushed.

The walls of my house are also cracked, and the kraft paper has been repaired, and it is still cracked! Given the prevalence of wall cracks, it can be judged that the landlord's house is still good. At least there are no cracks in the walls!

Mend the seams and brush them again from scratch

The painter didn't do a good job, didn't say it.

The steps for repairing cracks in latex paint walls are as follows;

1. Clean the wall, clean up the loose or stained places, and then use cement mortar to make up for it, and remove the excess residue.

2. Repair the wall, use water plaster to level the wall bumps and uneven places, treat it with sandpaper after drying, and finally clean up the floating dust.

3. Scrape putty, usually do it three times, such as kitchens, toilets, bathrooms need to take polyvinyl acetate than cement than water is equal to 1 to 5 to 1 ratio, the first time with a rubber scraper to scrape horizontally, and then use a scraper to deal with, pay attention to the joint to be careful, and finally scrape once to deal with the end.

4. The first time the latex paint sequence is first up and then down, after the wall is cleaned, take the cloth to sweep away the dust, and then the latex paint is brushed with a row pen, and the floating and loose hair on the pen should be cleaned up, and the latex paint should be stirred and balanced before use, so as to avoid the situation that the brush can not be opened, and then fill it with putty after drying, and then polish it with sandpaper, and finally clean it up.

5. Brush the latex paint for the second time, stir the putty before using it to balance it, so as to avoid penetrating the top, and after the paint film is dry, take the sandpaper to polish it flat, and finally remove the dust.

6. Brush the third latex paint, the practice is the same as the second time, but because the latex paint film dries quickly, it needs to be operated quickly, and the order of painting is from one end to the other.

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Wait for it to stop cracking and then paint it with a house taxi wall paint, which I used to do.

Repair it with elastic paint.

There are many reasons for cracking of wall latex paint, and the following three are more common:

1. The cracking of the wall latex paint is caused by the dry weather in summer;

2. The structural cracks of the wall itself are caused by the frame structure of the house;

3. The putty powder is not dry at the time of wall alignment, and the construction personnel begin to paint the latex paint and cause cracking, which is completely artificial, and the main reason is that the construction personnel are not too skilled.

To solve the problem of cracking of latex paint, in addition to the factors such as the quality of latex paint is not up to standard, it is the problem of putty

In this case, you need to go to the regular decoration company to find the construction personnel to shovel off the paint and putty on the surface, use non-woven fabric or kraft paper to re-post the cracks, and then scrape the putty, and then paint or spray latex paint after the putty is completely dry, so as to avoid cracks.

1.Putty is made of heavy calcium powder, talcum powder with a certain amount of cellulose and construction glue blended into engineering putty, because of the low cost, easy to use in the construction is widely used, but the quality is basically not up to the finished putty national and industry technical specifications requirements. 2.

In the case that there are no cracks in the wall and no cracks in the putty powder, it is the problem of latex paint, but the latex paint itself is only a semi-finished product and needs to be used with water.

Hello, glad to answer for you! Cracking may be caused by the following reasons: 1. The putty is not dry thoroughly, resulting in cracking. 2. There are cracks on the wall, and the cracks cannot be patched well when the wall is treated. 3. There are many decorations on the same building, and the house sinks;

4. After brushing the latex paint, the window should not be opened widely, and the window should be left with a small gap for ventilation, so that the putty and latex paint in the wall can be slowly dried. 5. The mixing ratio of latex paint is wrong, and the application is uneven 6The latex paint brush is too thick and can also cause cracking, I hope mine can help you!

For the depth of the crack in the wall is more than 1 cm, it is necessary to preferentially use cement mortar to repair the crack in the wall, and then apply wall paint.

For the cracks, special treatment should be carried out, and the cracks can be pasted with kraft paper tape and white latex to prevent further cracking. In addition, it is necessary to level the uneven wall, generally gypsum is more commonly used, and the uneven difference is not more than 0 5 cm, and then the cloth: the general light wall and insulation wall and other non-load-bearing walls need to be plastered.

Features of latex paint:

After the construction of building latex coating, with the rapid evaporation of water into a film, in the case of good construction environmental conditions, a day can be multi-channel painting construction, greatly shorten the construction period, save construction costs.

Good opacity is an integral part of a high-quality latex paint, which represents a better, less time-consuming and less cost-effective stucco job.

Good adhesion avoids cracks and blemishes, and ease of cleaning ensures gloss and color retention. Therefore, they are an important indicator for choosing latex paints.