Latex paint often cracks, is the quality of the purchase not good?

Basically, the situation when cracks occur is that the greasy and unstable base layer or moisture causes the foundation to crack. If you apply too thickly, the environmental conditions do not warrant a normal coating drying care and there will also be cracks. Putty is made of medium calcium powder, talcum powder plus cellulose and construction adhesive, due to its low price, it is widely used in construction, but the quality basically does not meet the technical specifications of the finished putty national and industry regulations.

Unless there are no cracks in the walls, and the greasy powder is not cracked. However, latex paint itself is only a semi-finished product, so it should be used with water. The cause of the crack is that the water becomes smaller or sprinkled too thickly, the paint dries, dries slowly, cracks.

If the above reasons are ruled out, it can be said that there is a lack of film-forming additives in the latex paint, and the quality cannot be closed. It is better to use brands such as Dorothy and Diamond for home decoration. In the cracks, we first clean the base layer, then spread a layer of Kunlun cloth or kraft paper and newspaper on the wall, then apply putty, and then apply latex paint.

This method mainly uses fiber tension to ensure the integrity of the latex paint film, and the method is relatively simple and easy to operate.

Gypsum board or "5-mile board" is installed on the outside of the insulation, and latex paint is made on top of it. But this method can't get out of the irregular cracks completely. Cracks are usually between the plates, so they are easy to deal with.

However, this method is expensive and difficult to construct, so it is also troublesome for ordinary people to repair it themselves. If the area with cracks in the walls of the home is small, it is not advisable to use this method. When choosing latex paint, some consumers pay attention to the packaging of latex paint and ignore the materials in it.

Some businessmen deliberately exaggerate the latex paint they produce***, and consumers are easily misled by exaggerated packaging. Fake latex paint, generally buy lower quality latex paint products. Adhesion and coverage are really limited.

If you buy fake latex paint, the walls may crack and discolor.

The original wall problems mainly include mortar cracks and hollows, as well as hollowing of greasy layers. For example, after putting grooves on the wall, the paint is applied incorrectly, the wall will shrink and crack, the proportion of cement when painting is incorrect, and the greasy proportion of the wall will be inappropriate or uneven. Consumers must carefully check the quality of the walls when closing the house, so if a problem is found, it must be targeted when renovating.

In addition, there are cracks in the insulation of the single room, and the walls may crack after renovation. The quality of latex paint passes through the pass at the same time, if it is not a problem with the original wall, after renovation over time, cracks may appear. Over time, inevitable residential subsidence or plaster ceiling deformation settlement may occur.

Residences settled in old multi-storey apartments are the most common. In particular, cracks in the 45-degree direction appeared on the surface of the walls.

The following cracks in latex paint belong to normal cracks:1. The putty layer of the wall has cracked, and the crack is below the millimeter, which is normal.

2. Cracks caused by temperature changes mainly appear in the four corners of the wall, which is normal.

3. Cracks caused by damage to the paint layer due to a long time are also normal.

4. The cracks existing inside the concrete, the width is less than millimeters, and they are also normal cracks.

Most of the cracks on the wall are basically caused by the cracking of the putty layer or paint layer, and the general situation requires the putty to be scraped from the wall again, and the treatment can be smoothed.

If there is a crack in the paint layer itself, it can only be repaired with latex paint of the same color.

It is not because the quality is not good, but because the process is wrong in the process of application, and the operation is wrong, so there is a cause for cracking, and it is also related to the situation that the home is too dry.

Not necessarily, it may also be caused by frequent ventilation at home, and it may be caused by some other reasons.

Yes, because of poor quality, the latex paint will often crack, which will affect the beauty of the home and make the home irregular.

Yes. Therefore, when buying latex paint, you must choose a big brand, and then you must choose the most expensive one, so that the quality will be better.

Part of the reason is that the quality is not good, and part of it is because the wall is not particularly flat, or because it has been a long time.

It is normal for latex paint to have small cracks, but it depends on the size of the cracks.

If the crack in the putty source layer of the wall is less than a millimeter, it is a normal crack and will not cause great danger. There are also temperature cracks, which mainly occur at the four corners of the wall or the position of the beam.

When the temperature changes, thermal expansion and contraction occur, and cracks appear. It is normal for the wall to be painted, and after a long period of use, the paint layer will be damaged and will also cause cracks on the surface.

Treatment of cracks in the wall:

1. Whether there are normal cracks on the wall, such as cracks in the putty layer or paint layer. At this time, you need to scrape the putty on the wall again, and then treat it evenly, which is very convenient. If there are cracks in the paint layer, it is necessary to look at the main factors caused, if it is caused by improper construction, it should be sanded with sandpaper first, and then repaired with latex paint of the same color.

2. If there are settlement cracks in the wall, or cracks due to temperature deterioration, it is necessary to deal with them in time to prevent the cracks from getting bigger and bigger, increasing a certain degree of danger, and making it impossible to use safely in the later stage. If the crack is caused by temperature change, it is necessary to re-do the insulation layer to prevent the gap from expanding.

Latex paint itself is known that the hand will not crack, if the wall is brushed with latex paint after cracks, and the latex paint itself has nothing to do with it, mainly the way of operation or before brushing latex paint did not deal with the health of the base, for example, some people are too anxious when decorating, the first time the latex paint has not dried and continue to brush the second time, the process of brushing the wall has a problem, which will lead to the appearance of wall cracks.

Nowadays, painting latex paint on the wall has become an indispensable step, which can bring better protection to the wall, and the aesthetic effect brought by different latex paints is also different. In order to avoid cracking after brushing latex paint, it is necessary to find more experienced construction personnel, as far as possible in the season when the climate and temperature difference is not too large. Jiwu real estate encyclopedia, more must know to buy a house.

Latex paints may crack during the drying process, mainly because the coating is too thick or dries too quickly. In addition, if the surface of the substrate is uneven or contains contaminants such as grease, it can also cause the latex paint to crack. Therefore, before applying latex paint, you should make sure that the surface of the base layer is clean and flat, and the coating is uniform and thin, so as to avoid over-painting and rapid drying.

If cracking occurs, you can use a sander or hand sanding and then reapply the latex paint.

Causes of latex paint wall cracking:1. There are gaps in the insulation layer of the wall, and the paint is not treated well, resulting in cracks in the latex paint.

2. After the wall is slotted, there is a problem with filling, and the wall shrinks and cracks.

3. If the cement ratio is not correct when plastering, there will also be wall cracking.

4. There is a problem with the ratio of latex paint and water, and it will crack after painting.

Latex paint construction precautions.

1. Before the construction of latex paint, it is necessary to do some treatment on the wall, such as the uneven wall, it needs to be repaired in advance, and the wall has more dust and stains, and it should be cleaned up in advance. And because of the different paints, the use method is also different, so it is necessary to read the instructions in advance.

2. When purchasing paint, it is best to measure the approximate amount of brushing, and then buy more, so that it can be used in the later stage. Try not to buy paint in different stores, otherwise even if the color is the same, it is easy to make errors and affect the overall aesthetic effect.

Nowadays, there are many choices for wall decoration, including latex paint, diatom mud, wallpaper, integrated wall panels, tiles, etc., and latex paint is more popular among the public group, with good decorative effect, simple construction, cheap, simple renovation and other advantages, but if latex paint does not pay attention to construction, it is also prone to cracking and other problems, so what is the reason for latex paint cracking? What should be paid attention to in the construction of latex paint? Let's take a look with Qeeka Home experts.

1. What is the cause of latex paint cracking?

There are reasons such as the unstable base putty, the cracking of the damp substrate, the improper maintenance of the coating, and the excessive water added to the latex paint. Generally speaking, the latex paint itself will not have the problem of cracking, and most of the latex paint cracking is because the base putty layer is cracked, which spreads to the coating, resulting in the cracking of the surface latex paint.

Second, what to pay attention to in the construction of latex paint.

1. Pay attention to grassroots treatment.

The construction of latex paint has relatively high requirements for the base layer, and the original base must be removed cleanly, and the putty layer needs to be coated and polished before construction. If the original paint layer of the new house is intact, there is no need to eradicate, you can use a ruler to check whether the original base is digging, as long as the error does not exceed 5 mm, you do not need to remove the original plastering layer.

2. Pay attention to paint blending.

The preparation of latex paint paint is relatively simple, only need to add water to dilute it can be used, but there are strict requirements for adding water, if the amount of water is too much, the paint can not be well attached to the wall, and it is very likely to affect the gloss, hiding power, film-forming and durability of the coating, etc., so before adding water to mix, it is necessary to read the relevant instructions of the product carefully, and add water according to the instructions for use.

Summary: The above is about what is the cause of latex paint cracking, and what to pay attention to in the construction of latex paint, I hope the content shared can give you some reference, if you want to know more about relevant knowledge, you can **** Qijia Home to consult.