How to avoid air bubbles after scraping putty?

The first point is that it is recommended that you use the finished putty paste for batch scraping. It is not recommended to use putty powder and then add water to stir, this kind of putty is generally difficult to control the quality. The second point is that I personally recommend that you must take sandpaper for careful sanding after scraping the first putty batch.

This effectively removes these air bubbles and provides a very good basis for our next layer of putty batch scraping.

It is necessary to ask a professional putty scraper master to do it, so that it can be avoided to a large extent, and it is necessary to choose a better putty powder, which can also solve many problems.

Choose a better brand of putty, and be sure to clean the wall before scraping putty, so that many problems can be solved, and you must pay attention to the technique of scraping putty, which is also very important.

At this time, it is necessary to choose high-quality putty, at this time, we must choose special instruments, we must choose high-quality workers, and after scraping putty, do not open the window in time for ventilation.

Scraping putty is also called scraping white, which is a necessary step for wall decoration and painting. After scraping the putty, the paint will be smoother and regular, and it can be well bonded to the wall. Scraping putty generally has to scrape about two layers, be sure to wait for it to dry completely before entering the next step, and if you find that the putty is blistering, you should also deal with it as soon as possible.

How to deal with the bubbles in the putty

1. When the putty is blistered in a large area, the small blisters can be crushed directly with a spatula, and then the blistered surface layer can be scraped again with a suitable putty.

2. After the putty is stirred evenly, it will stand for about 10 minutes, and then stir it again with an electric mixer before putting it on the wall.

3. When the second or subsequent surface layer blisters during construction, the bubbles should be crushed with a spatula before the blisters are eliminated to ensure that there are no bubbles on the putty surface.

4. For particularly rough walls, coarse putty is generally selected as the base material.

5. In the environment where the wall is too dry or windy and the sun is strong, first moisten the wall with clean water as much as possible, and then scrape the putty layer after the wall is waterless.

Does it matter if the putty blisters for the first time

Important, it is recommended to break the blistered surface and re-scrape the putty according to the situation.

Blistering putty is normal. The first putty generally has such bubbles, the master will clean up, and there will be no such bubbles to the second time, of course, in a normal order, the first putty can be dried on the second course. Generally speaking, most of the blistering is a rough wall, and the wall itself is not smooth, and there are a lot of small sand grains in it, so blistering will occur.

It may also be caused by poor ventilation in the house and the house is not dry.

What's going on with the big white bubbles

1. The substrate is too rough and the scraping speed is too fast.

2.The layer of putty is too thick to be applied at one time, more than 2mm.

3. The water content of the base layer is too high, and the density is too large or too small. Due to the abundant voids, and the putty has a high water content and is not breathable, the air is enclosed in the void cavity and is not easy to eliminate.

4. The surface blisters after a period of construction are mainly caused by uneven stirring. The slurry contains powdery particles that do not have time to dissolve. After construction, a large amount of water absorbs and expands to form cracks.

Scraping putty is a very common construction process for home decoration walls, and blistering is easy to occur in the process of scraping putty. Next, PCHOUSE will share with you how to prevent blistering when scraping putty.

Pay attention to the basic treatment before scraping. In case of loose or too dry base layer, the base layer should be sprinkled with water to moisten before the putty is scraped, or the putty should be scraped after being reinforced with a reinforcing agent. On the surface of the dense layer, you can use hair-making treatment, or use the bottom layer putty to rough leveling first, so as to avoid the problem of blistering caused by the direct application of the surface layer putty.

Make sure each layer of putty is dry. During construction, it is necessary to ensure that after the previous process is completely dry, the next batch scraping is carried out with low-viscosity and strong flexible putty products.

Pay attention to the batch scraping thickness. If the putty is too thick in a single batch scrape, it will also cause the putty to be difficult to discharge in time when scraping, thus forming bubbles, so special attention should be paid to controlling the thickness of the batch scraping.

Pay attention to the putty ratio. When stirring putty, be sure to mix the putty according to the amount of water added in the product package manual, and stir the putty to a suitable consistency.

Stir and let stand. Stirring putty mixer speed too fast will also cause the mixed air to bubble, so let it stand for about 10 minutes after stirring before scraping.

There are a lot of bubbles in the wall and ceiling scraping putty powderIn the case of interior decoration, the lowest level of architectural paint is not done, and there are slight cracks on the wall. In the case of putty powder mixing, the mixing time is short and uneven, and there are smaller small breads, which can not be seen with both eyes, and can be seen after scraping on the wall to dry. Before scraping putty powder on the wall and ceiling, it is very likely that there is no brush "wall solid", the wall is fixed without moving glue, and there is no trowel inside the raw material "caulking gypsum", in the mixed mortar wall, the top of the ceiling can be directly scraped flat putty powder, due to the dryness of the wall and ceiling, the putty powder is not easy to bond on the wall, even if it is scraped flat on the wall and ceiling, the water in the putty powder is quickly digested and absorbed, which is also one of the factors that have bubbles on the wall and ceiling.

Shovel off the wall with bubble putty, the wall scrape putty is very easy, it is difficult to shovel off the putty with bubbles, because the putty scrapes on the wall is particularly thin, it is as thick as A4 paper, and it is especially difficult to shovel off, and it is also a more time-consuming engineering project. In the whole process of shoveling, only a small piece is shoveled, and it is even more difficult to shovel clean and tidy, and the residual putty endangers the quality of interior decoration behind. I would like to ask what to do if there are a lot of bubbles on the wall and ceiling scraped putty?

The above content is analyzed and explained in detail. There are a lot of bubbles in the wall and ceiling scraping putty, carry out shoveling off the solution, after shoveling neatly, brush the bottom layer of architectural paint, smooth the caulking plaster, mix the moisture-resistant putty powder 2 times, make sure to stir evenly, and scrape the moisture-resistant putty powder three times again.

A "scraper" who meets the standard must have a solution to the problem, and the first step in this bubble problem is to use a method to deal with it. Brother Yu encountered such a situation and solved it like this: if the first putty is scraped back to the hair, we are not in a hurry to solve it, let it dry for a while and wait for it to make up for it when it wants to do it, and to adjust the amplitude and thickness need to be even.

After pressing a few more times, the bubbles will slowly fade, the first time you don't need to scrape so thick, the second time you follow thinly, the efficiency of scraping can not be too fast, just carefully grasp the way to solve the bubble problem after scraping three or two times.

The application of fibers with high viscosity and very easy air extraction has a high overall air supply, and the bottom vapor is closed and cannot remove air bubbles. In addition, there are some poor quality lime calcium with a lot of quicklime powder, which produces a strong chemical reaction after releasing water, causing a lot of vapor and causing foaming. Generally, after stirring the putty evenly, let it stand for 10 minutes to let the various ingredients moisten and melt sufficiently, and then mix it again with an electric mixer on the back wall.

During the construction of the project, the wall needs to be constantly scraped, and the batch scraping must not be too thick. Pay attention to the temperature during the construction of the project, the relative humidity of the air is more than 75%, and the moisture content of the wall is more than 10% to prevent the construction of the project.

The reason for the blistering of putty, one of them, is that the base is too rough, there are fine pores, such as the cement mortar surface layer, the surface of the wood have some pinholes, if the putty is scraped, these holes are not fully filled, heated and expanded, and the coating film will form bubbles.

Generally, when scraping putty for the first time, directly use a shovel blade to crush all the small bubbles, and then scrape putty in batches to fill the holes, which is basically solved after grinding.

Note that the putty is stirred evenly, and it can be put on the wall after standing for about 10 minutes, and the standing time should not be too long, and the putty scraped should not be too thick, less than 2mm is the best. ）

Second, it may be caused by the dry climate, which causes the wall to be too dry, because the putty is added with something called hydroxypropyl methylcellulose, which has good film-forming, when you wipe the putty on the wall, because the wall is too dry, you need to absorb a lot of water. While the wall absorbs water, it will release gas to the outside world, and the putty will form a film, and the gas will not come out, so bubbles will be formed.

It is recommended to spray some water on the wall to moisten it, and then carry out the next step of construction after the wall has no open water, which can reduce the appearance of some bubbles.

It may be that the construction personnel are inexperienced, or it may be concrete, and the ceiling has a lot of bubble eyes. When painting the wall, you can brush the interface agent first, and then go through it again with plaster, which can solve the problem of air bubbles.

Because when the developer is building a house, the wall is not leveled, and it may be that some inferior putty is used, and the level of the master is not good, you can use a shovel to shovel off the blistered part, and then re-level the wall, and repaint.