Is it normal for putty powder to bubble after scraping?

This situation is not normal, it may be that the putty powder is not selected properly, or the fabric reacts to the situation in the air, so it will cause bubbles.

The decoration is a bit of a failure, for example, some of this putty powder is expired, or some of the quality is unqualified before it is scraped.

It is very normal, because the putty powder itself is very easy to foam, and the foaming of the putty powder will not affect the function of the putty powder on the wall.

As the basic material of wall decoration, putty is mainly used to level the wall, so that the paint can show its perfect decorative effect. However, in the process of putty construction, if the details are not properly handled, there will be blistering of the putty layer, resulting in uneven decoration and application, affecting the appearance, and the bursting bubbles will spread harmful substances to the body and other hazards. Today, let's take a look at the causes of blistering.

There are many reasons for this, first of all, your wall is dirty and polluted, the second is that the putty is not stirred evenly when stirring, and the third is that when the putty is scraped again, it is too thick to wipe and it is prone to cracking and blistering. First of all, be sure to stir well when stirring the putty. And don't always go clockwise.

Stir clockwise and counterclockwise at the same time. There can be a certain pattern, such as turning left three times, turning right three times, and repeating this action more.

It is also very particular about mixing water, do not mix too much water, which will reduce the adhesion of putty, and do not let go of less water. If there is less water, the putty will not blend together, which will bring hidden dangers to the later construction effect of the wall, and then the cracks on the wall must be glued with tape or masking tape before scraping the putty, which must be done, otherwise the wall will crack and blister after scraping the putty is caused by these cracks, and the cracks will be regurgitated outward, blistering at light, and cracking and falling off at the heavy.

A small amount of glue can be added during construction, which will make your putty hard and not easy to blister, but there will be some loss in toughness. And the putty has to be beaten many times, the general construction standard is three times, each time must be firmly pressed, so that the bubbles in it can be discharged, and the putty can be well combined with each other, and the wall must be very dry, if the wall is wet, it is also one of the reasons for the putty to blister. After three coats of putty, it is sanded with fine sand.

This will prevent the formation of bubbles and will also make your walls more delicate. It has great benefits for the construction of the next process.

After the putty is stirred, the putty needs to be left for 15 to 30 minutes, so that the bubbles in the putty can slowly rise upward. Gradually discharged into the air. This also makes a lot of air bubbles out very well.

Prevent air bubbles from being left in the putty when scraping.

That is, the scraped putty powder is relatively thick and easy to blister and crack. Partial shoveling is required to re-remedy.

When the wall decoration "foundation", the most important step is to batch putty, if the foundation is not laid, the wall problems will emerge in endlessly. Recently, many friends have told Uncle Craftsman why the putty in my house blisters immediately after scraping. Today, Uncle Artisan will talk about it:

An in-depth analysis of the causes of putty blistering.

01.Causes of putty blistering.

From the perspective of the base layer of the wall, there are three points to pay attention to:

1. The substrate is too rough or dry, and the plastering speed is too fast;

2. The thickness of the putty layer in a construction is too thick and greater than;

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

In terms of construction:

1. Uneven stirring, after a period of construction, the foaming on the surface is mainly caused by uneven stirring, and the slurry contains powdery particles that are too late to dissolve, and a large amount of water is absorbed after construction, and swelling forms bubbles.

2. Add too much water to the putty and mix it too thin.

3. If the single-layer batch scraping is too thick, the air can not be effectively discharged, and the putty film will be lifted after the pressure is released to form bubbles.

From the putty product itself:

The use of cellulose, which is too viscous and easy to bleed air, has a relatively high overall gas content, and the base gas is enclosed and cannot remove air bubbles. In addition, some poor quality gray calcium contains a large amount of quicklime, and after adding water, a violent exothermic reaction occurs, producing a large amount of gas and causing foaming.

02.Putty blistering solution.

First of all, the wall base layer should be cleaned without oil and dust. It is recommended to do interface treatment before applying putty, apply a layer of interface agent, and then scrape and apply putty after drying.

In the environment where the wall is too dry or the wind is strong and the light is strong, it is moistened and sealed with the master craftsman solid bottom, and then the putty is scraped.

Generally, after stirring the putty evenly, let it stand for about 10 minutes to allow the various ingredients to be fully moistened and dissolved, and then stir it again with an electric mixer before putting it on the wall. During construction, the wall should be scraped repeatedly, and the scraping must not be too thick.

Pay attention to the weather during construction, the air humidity is more than 75%, and the moisture content of the wall is more than 10%, so avoid construction.

03.Choose the right putty product.

There are many putty products on the market for consumers to choose from, but consumers must pay attention to the following points when choosing putty products:

1. Choose a regular brand.

2. Choose n-type water-resistant putty.

If the climate of your city is humid and the wall is prone to moisture, then you must look for N-type water-resistant putty when choosing putty, so as to ensure the service life of the wall to the greatest extent, without foaming or mold

Today's [don't bother] decoration, let's talk about it here, and finally, I wish everyone can.

Perfectly avoid the problem of wall putty blistering!

It may be that the base layer is too rough and has subtle air holes. You can first crush all the small bubbles, scrape the putty at the bubble holes, and then polish it to basically solve it. It may also be because the climate is relatively dry, the wall is too dry, and the wall absorbs a lot of water at the same time, but also releases gas to the outside world.

You can start by spraying some water on the wall. It is also possible that the putty itself is a quality problem, and if there is a large area of blistering, the putty should be shoveled off and scraped again.

Because the walls are too dry. You can pat the wall with water to make it moist enough. Or there is too much water in the putty, which causes the putty to break in the evaporation of water.

It may be because the putty is not used for a long time, and the solution is to let the master scrape the putty again.