How to solve the problem of putty scraping off for indoor wall decoration?

First, the putty scraping technique is fast and flat.

First, put an appropriate amount of water into the bucket, generally no more than one-third of the volume of the bucket, then pour in an appropriate amount of putty powder, install the electric drill on the mixing head, turn on the electricity to stir, and stir until it is sauce-like.

Before scraping, you should use a broom and putty knife to clean the wall, when scraping, you should first scrape the top and the upper part of the wall, and then scrape the lower part of the wall.

Second, the reason for putty falling off.

Poor bonding. The cracking, peeling, and peeling of putty are mainly caused by the poor bonding between putty and the base layer. If the base layer is not cleaned up or the treatment method is improper, the template release agent, oil co, inorganic acid and organic acid on the base layer are not completely removed, the caustic alkali aqueous solution (used to remove the wall oil stain) is not brushed, the binder is not applied or the putty formula emulsion is improperly mixed, the result will reduce the bonding strength of the putty and the base layer.

The test data proves that the base layer is well treated, and the bond strength can generally be increased by 5-9 kg square centimeters, and the emulsion can improve the bonding performance of the mortar and the base layer, and the general bond strength can be increased by 4-7 kg square centimeters. The putty coating is too thick. The thickness of the putty coating is related to the choice of material and ratio.

For example, scraping large white putty, in order to facilitate the operation, the talcum powder is added more, which improves the lubrication performance of the putty, and generally does not produce excessive coating; However, if starting from the putty filling effect, the amount of large white powder increases, due to the coarse particles of large white powder, the putty has poor lubrication performance, and it is not easy to operate, and the coating may be too thick. It can be seen that the key to preventing the coating from being too thick is to properly adjust the content of large white powder and talc. The cracking caused by the main structure has nothing to do with the quality of the putty and the construction method.

Other reasons for the peeling and falling off of putty, as well as the interval between two putties is too short, the first putty is not dry and the second putty is scraped, which is easy to cause dryness and shrinkage, resulting in peeling and falling off.

The main reasons for the problem of wall putty falling off are:

1. Poor skills of construction workers;

2. Poor adhesion or shrinkage performance of putty and coating.

Solution: 1. Choose high-quality water-resistant putty. These putties have high whiteness, good water resistance, high bonding strength, no peeling, no chalking, and no falling off after use, which can solve the trouble of wall skin peeling;

2. Before spraying cement paint, you need to scrape the putty at least two or three times; Add white latex with gypsum powder to increase viscosity. Another point is that it is recommended that consumers use cement paint for special purposes.

3. The interior wall cement paint has high requirements for scrubbing resistance, and it is easy to stain the wall in home life, so it can be wiped with water at any time. However, the inner cement paint does not have the function of sun protection, so it cannot be used to spray exterior walls.

When decorating, we must honestly scrape off all the putty with less glue content, and then brush a layer of wall interface agent to prevent the putty and new putty in the gaps from working. In addition, the ash on the wall must also be cleaned up, otherwise there will be bulging and other phenomena. It should be caused by cheap putty on the market.

Workers are irresponsible. The simple treatment method is to use the interface agent of styrene acrylic twice and then apply the latex paint. To do it thoroughly.

Shovel off the putty until it has a solid base layer (note that the base layer is not strong enough and may cause the putty to bulge). Do it twice with an interface agent and apply the latex paint on the putty.

1. First of all, all the peeling wall putty layer should be removed, and it is best to use special decoration tools to operate. 2. After shoveling, use a brush to brush the dust and powder on the surface. Then brush the glue again and re-batch the putty.

3. It is best to add a small amount of white latex to the new batch of putty.

This can increase the hardness and adhesion of the wall putty layer, and can also prevent the putty layer from peeling or pulverizing. The reasons for this situation: 1. It may be because the original base wall has not been cleaned, and there are other debris that leads to water-resistant putty.

Cannot be properly attached to it. 2. It is also possible that the cement curing method is improper, resulting in the demoulding of the base layer, so the adhesion of the cement surface decreases, and the water-resistant putty cannot be attached normally. 3. It may also be because the strength of the original wall base is too low, and the pulverization or peeling off will cause the surface putty to bulge or even peel.

Therefore, after a period of painting, it is easy to appear that the wall putty begins to peel. 4. It may be because you forgot to brush a layer of glue when you put on the wall putty, or because the quality of the glue is not good, which leads to a decrease in adhesion, which will also affect the overall effect and the adhesion of the wall.

1. There are many reasons why the wall putty falls off, such as the alkali on the wall, the construction process is incorrect, the putty is not selected correctly, the wall base is not cleaned, etc., which will cause the wall putty to fall off. The wall putty has the problem of falling off and hollowing, we need to shovel off the hollow drum and peel off the putty layer and polish and clean the wall, the wall is too smooth and easy to fall off due to the putty bonding is not strong. 2. If the putty layer falls off caused by the dampness of the wall, you can first apply waterproof paint to strengthen the waterproof and moisture-proof treatment of the wall, and then paint putty for repair.

If the putty layer falls off caused by alkali on the wall, you can first apply oxalic acid or interface agent to prevent alkali on the wall, and then repair it by applying putty. If it is caused by the wall base layer is not cleaned, you can use a special cleaning agent to clean up the impurities of the base layer and repair it with putty. When you scrape putty, you should use high-quality water-resistant putty, and if you use non-water-resistant putty, it is easy to fall off.

How to repair the wall putty partially falling off: For the wall skin peeling off, our usual remedy is to scrape the putty again after eradication. At the same time, you have to pay attention to the quality of putty, it is better to use a little putty powder, ** is not expensive, compared with inferior putty that is easy to have problems, it is still very cost-effective.

It is recommended to shovel off the part that may fall off with a putty knife (also called putty shovel) without too much force, and then scrape the plaster from scratch (at this time, putty can be used. Because when repairing, the effect of plaster is better than putty) to dry, and then brush latex finger paint, so that it can have a good effect of being repaired.

This answer is suitable for most of the repair methods where wall putty falls off.

Repair method for the peeling off of putty powder wall: scrape putty.

Scrape the putty on the wall to ensure that the wall surface is flat. Generally, scrape three times, and after drying, polish it with sandpaper. This step is carried out before the latex paint is applied. By filling or overall treatment, remove the uneven part of the surface of the base layer to keep the wall flat and smooth.

The interval between two putties should not be too short, and the first putty is not dried to scrape the second putty, which is easy to cause dryness and shrinkage, resulting in peeling and falling off.

Small cracks only need to carry out the second construction of putty, and if the crack is relatively large, you must first remove the putty, wait for a period of time to apply putty to return to normal, must be correctly constructed to make the wall without cracking.

Precautions: 1. When choosing putty, be sure to choose some putty powder with good quality, otherwise re-applying it will also cause the putty to crack. In addition, you must choose some professional construction personnel, they can ensure the effect of putty painting, most of the cracking of the wall skin is caused by improper construction, so this step is very important.

2. Timeliness is very important during construction, the two construction times need to have a certain isolation time, preferably greater than 4 hours, and a major reason for the cracking of the wall skin is because there is no waiting for the putty powder to dry during the construction of the next step of construction.

3. When applying putty powder for the first time, you must pay attention to the thickness not to exceed 5 mm, otherwise the thickness is too large, which will cause the internal drying to be relatively slow, and at this time, the second application, even if it is dry, will form cracking.

4. When you usually use the house, the room must be waterproof and moisture-proof, and you can prepare some green plants to be placed at home.

1. The transportation file generally needs to shovel off the original putty and paint silver, and then redo the wall side of the chaotic surface.

2. After removing the existing surface layer putty and coating, you should also carefully check whether the cement (or sand ash) at the bottom layer is strong and cracked.

3. After removing the surface layer and completing the bottom treatment, you can scrape the putty. It is recommended to have a long service life and a strong water-resistant putty on the wall. Putty scrape 2-3 times, subject to leveling, then polish, and finally brush the primer 1 time, topcoat 2 times.