What is the reason why latex paint comes off in a few months? Is there a good way to deal with it?

The main reasons for the latex paint to fall off are that the putty of the base layer is not dry and the latex paint is brushed, the water enters the base layer of the wall, and the wall is damp. The solution to this problem is to remove the peeling wall first, then re-scrape the putty, and wait until the putty is completely dry before repainting the latex paint.

It may be that the quality of latex paint is not good or the putty powder is not handled well, it is recommended to find a professional painter to deal with it or buy safe, qualified and non-toxic products.

The first reason is that the adhesion of the product is not good, the product is not selected properly, and the supporting products are not used according to the requirements. The second reason is that the substrate is very loose, and the substrate is not treated well without waterproofing, there is oil or dust, and the wall is not completely dry. The third reason is that the painting is one-time, and the paint film is too thick due to too thick construction.

If the adhesion of the product is not good, you can choose to re-shovel off the paint film, pretreat the substrate, and choose the products that are matched with the construction.

1. Generally, there will be a process of foundation settlement in a new house for one or two years. During the settlement process, the wall stretches, which will cause wall cracks or wall peeling and cracking. In the process of foundation settlement, do not rush to partially repair the wall, it is best to wait for the settlement period of 1-2 years to gradually stabilize before starting to repair the wall.

2. When the developer delivers the house, the wall is smoothed with plain ash, and the workers must shovel off the plain ash of the base layer and re-brush the primer when painting the wall. If the workers do not clean the base layer in the decoration, it will cause the wall to peel and crack for a period of time after brushing the latex paint.

3. Some decoration companies cut corners in order to save money when decorating for the owners, and the ratio of raw materials is unreasonable, for example, too much moisture in the paint.

The reason why the wall emulsion paint falls off is that the low ash quality is not good, or the wall is damp.

1) Before the wall paint is dry, paint it.

2) Excessive mixing of wall paint with water.

3) Low-quality wall paint or wall putty!

It could also be because of the grassroots.

The walls are alkaline. Just brush it with an alkali-resistant sealing primer.

The main reason is that the construction temperature of latex paint is low, and it fails to form a continuous coating film and cracks, and it will fall off when it encounters water; The base layer is loose, there are oil stains and other dirt, and the coating film does not adhere well to the base layer, resulting in peeling; The strength of the base batch scraping putty is low, and the putty layer is coated with latex paint before it dries; The base layer is too smooth, resulting in poor adhesion of the coating film. Peeling: Prevention:

Observe before construction, if there is leakage, please ask the relevant departments to solve it in time, and special treatment should be added, it is recommended to use durable and waterproof bullets to pretreat the wall, and then paint it according to the routine. Be sure to clean the wall during construction.

1. Water on the wall: Moisten the original wall, save effort when shoveling.

2. Shovel the wall skin: Remove the part of the original wall that has been soaked in water until the cement mortar wall or putty layer is exposed.

3. Interface agent: The wall is coated with interface agent, and the interface agent must be brushed, and it must be brushed evenly.

4. Cracks: In general, use kraft paper tape and white latex to stick the cracks.

5. Leveling: uneven walls need to be leveled, generally gypsum is more commonly used, and the uneven difference is better than centimeters.

6. Patching: Generally, non-load-bearing walls such as light walls and insulation walls need to be pasted, try to choose a better texture wall cloth and white latex, if there are conditions, you can use mesh cloth, the relative anti-cracking effect will be better.

7. Batch scraping putty: it is better to choose putty with higher particle fineness and harder texture, and you can also add a certain amount of white latex to the putty, which can improve the hardness of the putty.

8. Grinding: try to use finer sandpaper, and generally use 400-500 sandpaper for softer putty.

9. Primer: The primer must be brushed evenly to ensure that every place on the wall is brushed, if the wall eats a large amount of paint, the primer is best to add a little more water to ensure that it can be painted evenly.

10. Patching: After the putty is polished, there will be some flaws (pit eyes), which are generally difficult to see, and it will be obvious only after brushing the paint, at this time it is necessary to make up, pay attention to the patch must be polished and smooth, and then brush it with a primer with a little more water, so as not to have color difference when brushing the topcoat because of the different draught with other walls.

When your house was painted, the construction was not in place, and if it was in place, it would not fall off. It is only as thick as kraft paper, so you can paint it directly and brush it several times.

Answer 1: Remove the shedding layer and deal with it in a targeted manner according to the following situation. 2. Polishing the old wall to increase the surface roughness, and then treat it with an interface agent (10% environmentally friendly glue or a special interface agent for sleeping treasures). 3. Use degreasing and cleaning agent to remove the release agent or other grease components on the surface, and then apply putty.

4. Use two-component or special plywood putty for construction. 5. Marble, mosaic, tile and other exterior wall surfaces should be made with special exterior wall renovation putty. 6. Use the putty within the shelf life.

Get a stucco and he'll help you out.

Repair method for latex paint peeling off:

First, the place that falls off, to deal with the base layer of all clean, you can first paste a layer of good cloth, kraft paper or newspaper on the wall, and then putty, brush latex paint. It is to use the tension of the fiber to ensure the integrity of the paint film of the latex paint.

Second, you can also remove the surface of the insulation board, or remove the cement wall, install a layer of gypsum board or "five-mile board" outside the insulation layer, and then do latex paint on it, you can remove all the irregular cracks, and the cracks are generally the joints between the plates, which are easier to deal with.

Third, it is the use of 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.

Latex paint is the common name of latex coating, born in the mid-to-late seventies of the twentieth century, is a large class of synthetic resin emulsion coatings represented by acrylic copolymer emulsion. Latex paint is a water-dispersible coating, which is made of synthetic resin emulsion as the base material, and the filler is refined by adding various additives after grinding and dispersion. Latex paints have many advantages that are different from traditional wall paints, such as easy to apply, fast drying, water resistance, and good scrub resistance.

In China, people are accustomed to use synthetic resin emulsion as the base material, water as the dispersion medium, adding pigments, fillers (also known as physique pigments) and additives, and the coatings made by a certain process are called latex paints, also known as latex coatings.

The solution to this problem is that the wall latex paint falls off every few months: the wall is wet: wet the original wall, and save effort in the case of shoveling.

Shovel the wall: Remove the part of the original wall that has been soaked in water until it leaks out of the mixed mortar wall or putty powder layer. Waterproof putty:

The wall is brushed with waterproof putty, and the interface agent must be brushed out, and it must be brushed evenly. Gaps: Under normal conditions, wrap paper tape and white glue to close the gaps.

Ground leveling: uneven walls must be ground leveling, generally plaster is more common, and the convex and concave difference does not exceed centimeters.

Cloth paste: generally solid walls and insulation walls and other load-bearing beams must be clothed, as far as possible to choose a better material wall cloth and white glue, if there is a premise can be used alkali-resistant mesh cloth, the relative crack resistance actual effect will be better. Batch putty:

It is advisable to use putty powder with high particle size and hard material, and you can also add a certain amount of white glue to the putty powder to improve the strength of putty powder. Grinding and polishing: use fine sandpaper as much as possible, and generally use 400-500 sandpaper for putty powder with soft color.

Topcoat: The primer must be brushed evenly to ensure that every part of the wall is brushed out, if the wall consumes a lot of food, the topcoat is best to add a little more water to ensure that it can be brushed evenly.

Leveling: After the putty powder is polished and polished, it will leave some defects (pit holes), which is difficult to recognize under general circumstances, and it will be very significant only after a paint, and it must be leveled at this moment.

Wall maintenance: Generally, the friction on the wall is very small, and the key is dust, water droplets, etc. Topes can be used to wipe off the surface dust, and the sprayer wax water can be applied regularly to carry out maintenance.

The sprayer wax water can not only clean the service, but also produce a permeable protective film on the surface, which is very convenient. If it is the wall of the bathroom, then you must use an acidic detergent regularly, and you must wash it with water after cleaning, otherwise the surface will be gray and dull. After living in the house for a long time, it is inevitable that there will be a lot of dirt on the walls, especially on the walls, there will be many footprints.

The moisture-proof wall should be cleaned with a cloth immediately, but after cleaning, it should be blotted away with a dry cotton towel. Walls that are not moisture-resistant can be scrubbed with an eraser.

The first step is eradication. We need to remove all the latex paint from the parts that have fallen off. After eradication, if it is found that the internal putty layer is intact, then the original putty layer can be used.

If the putty layer is also peeling off, then the putty layer should be removed as well. The second step is to re-scrape the putty. To remove us, we have to scrape the putty again.

At this time, it is recommended that you use water-resistant putty for batch scraping. Because the strong strength of water-resistant putty is often good, it is conducive to the painting of latex paint. The third step is to repaint the surface with latex paint.

After we scrape the putty batch and polish it, we have the conditions for brushing latex paint.

First of all, we must dispose of the base layer reasonably, and clean the wall, clean it several times, so that the adhesion of the latex paint is enhanced, the temperature of the construction is not too low, and the viscosity is just right.

This is due to the wrong method and wrong order when painting latex paint, so it will cause it to fall off, and the wall can be repainted.

1. If the putty is not good, it will lead to cracking of the latex paint.

2. The dampness of the wall will also lead to cracking of the latex paint.

3. Improper application of latex paint will also cause latex paint to crack.

Suggestion: Whatever the reason, shovel off all the wall skin and putty at the cracked place, see if the wall is wet, or the pipe embedded in the wall has slow water seepage, if it is not water seepage, wait for the wall to dry thoroughly, scrape the putty again, wait for the putty to dry thoroughly and then paint latex paint, pay attention to the painting, be sure to wait for the first paint to dry thoroughly before painting the next paint, so that it will not crack again.

There may be several situations: 1. Putty strength and proportion. If the putty cuts corners, the strength is not enough, and it is easy to peel off.

2. The grassroots treatment is not in place. The base layer is not treated well before scraping the putty, for example, the release agent on the concrete wall is not washed off, and the adhesion of the putty is not enough, of course, it is easy to peel off. 3. The base layer or putty of the wall is not dry, and in order to rush the construction period, the surface layer is brushed in a hurry, and the moisture inside the wall is pushed to the outside, which may also cause this reason.

Looking at the above Q&A, guess that the landlord is professional in coatings, as an experienced construction team is more likely.

There are two possibilities: 1. There may be too much carbon dioxide in the room, and 2. The quality of the paint is too good.

Latex paint peeling off is actually a very common phenomenon, and the reasons for falling off are:

1. The problem of the contact surface of the grassroots: the wall is not clean when the latex paint is applied, the workers are lazy, and the wall is not polished and cleaned, resulting in the adhesion of the latex paint is not strong;

2. Weather or environmental problems: during construction or use, long-term exposure to a humid environment leads to excess moisture in latex paint, and when the wind blows or the weather is dry, the latex paint will shrink and tighten, resulting in peeling. The former phenomenon is best consulted during construction, and in the latter case, for example, the bathroom is brushed with latex paint, and it is best to use waterproof latex paint.

3. Wall reason: Although the wall is a new wall, it does not exclude this reason, and the wall is not good, which will also lead to surface cracking and falling off.

Zhengzhou decoration company.

The analysis is due to the following reasons.

Generally speaking, the construction technology used by the decoration company to make latex paint finishes is:

Substrate treatment - yin and yang angle elastic line - batch embedding - side light grinding - roller brush primer (one time) - roller brush topcoat (two times). The construction of each process must be carried out only after the wall surface is completely dry. If the wall is still in a wet state and enters the next construction process, it is easy to cause the wall skin to fall off.

Clause. 1. Before the painter enters the site for construction, he must ensure that the wall is completely dry, and the moisture content of the wall shall not be higher than 10%.

In this way, the wall paint material can be firmly attached to the wall, if you can clearly feel the moisture in the room when you enter the room, then you have to open the window to ventilate a section of the bill, and wait for the wall to be completely dry, and then decorate.

Zhengzhou decoration company provides a small method for testing the moisture content of the wall and floor, and uses transparent glue to paste toilet paper on the wall, and compares it with dry toilet paper after a day.

Clause. Second, in the construction of the base treatment, the alkalinity of the cement mortar wall is strong before it is completely dried, and if it is said that the construction wall is not complete.

If you rush to paint the wall paint when it is dry, the wall will return to alkali, which will lead to the phenomenon of chalking and peeling of the wall.

Clause. 3. When the wall is embedded in batches, after each putty is completed, it must also wait until it is complete.

After drying, the putty is batched again, and when the indoor air humidity is greater than or equal to 70%, it is not suitable to batch putty, which will lead to the peeling of the wall.