What is the reason for the bulging of the exterior wall plastering mortar wall

There are generally several reasons for the bulge on the wall:

One of the reasons: generally the wall foundation at the bulge is not well treated, one is that the construction is not clean and floating, and then the wall is oily or waxy things, the second reason: the construction is not standardized enough, and the wall base is not dry on the latex paint.

The surface layer may also be caused by the original cement layer not being cleaned before scraping.

Reason 3: The material itself is not good, such as glue problems.

Reason 4: The interior of the wall is damp.

The specific steps are to shovel off the blistered part of the cement wall, seal the bottom with a primer, dry and then scrape, and then polish, primer and topcoat. If you want not to affect the aesthetics, you should spray (brush) the entire blistered wall at the end, because of the newness, the texture will be poor.

Caused by the presence of uncooked overburned lime in the lime slurry. Its hydration is very slow, and it only begins to mature slowly after the lime is hardened, and the volume expands, causing the hardened lime body to bulge. To avoid such accidents, the lime slurry should be left to rest in the ash storage pit for more than two weeks, that is, "stale".

There are many reasons for this!

1. There is a lot of mud in the sand of the mortar

2. The quicklime of the mortar is not soaked well.

3. The inner wall is a concrete wall with a high marking, and you don't have a bonding layer, that is, there is no interface agent.

4. The wall is not watered and moistened in advance before painting.

2b thing, the inner wall and the outer wall are not neatly understood.

The reason for this problem may be that there are cement or lime particles inside the wall that are not fully stirred, or because the foundation is unstable and the foundation is not firm. So what to do?

First of all, it is necessary to confirm the location and cause of the bulge so that you can choose the right treatment method. If it is because there are cement or lime grinding particles inside the wall that are not fully stirred, the punching pressure relief method can be used to drill holes in the bulging parts, take out air and inject cement slurry into the hole, and then seal the hole.

If it is caused by unstable foundation bearing, unstable foundation, etc., it is necessary to find out the root cause of the problem first, solve the foundation problem, and then carry out relevant treatment. This can be done by digging up the wall, covering the problem area with a steel mesh and then repairing it.

Either way, it needs to be repaired with a high-quality waterproofing material to avoid recurrence of such problems in the future. Especially during construction, it is even more important to prevent the appearance of bulging walls.

In daily maintenance, it is recommended to regularly check whether there is a problem with the exterior wall of the house and take measures to deal with it in time. It should be noted that in order to be fearless in order to be fearless in multi-event simulation and training, it is necessary to stay with friends to explore relevant safety matters and seek professional help to ensure the safety and accuracy of the handling process.

Bulging exterior wall paint is a common problem, usually caused by the presence of air bubbles or moisture on the paint surface. If the paint bulge is not treated in time, it may cause the paint surface to crack or peel, affecting the aesthetics and protection of the exterior wall. So, how should you deal with the bulge of exterior wall paint?

First of all, it is necessary to find the cause of the paint bulge. If it is due to the presence of air bubbles on the surface of the paint, it may be due to the fact that the air is not filled and cracked during construction or the bubbles are generated due to the long time of placement. In the case of a bulge caused by moisture, it is usually caused by a damp substrate or an undried paint.

Secondly, you can use a knife or needle to cut the bulge on the surface of the paint, squeeze out the paint inside, wait for the paint to dry before repairing, or use an electric polisher to smooth the bulge.

In addition, it is necessary to pay attention to avoid air bubbles on the surface of the paint during the construction process, and appropriate painting methods can be used, such as avoiding air bubbles when pouring the paint from the paint barrel, or reducing the number of repeated brushing in the same place when using roller paint.

Finally, according to the actual situation, you can choose to use special exterior wall paint or add paint anti-bulging agent and other products to reduce the occurrence of bulging.

In short, the treatment of exterior wall paint bulging should be timely and accurate, find the root cause of the problem and take the correct treatment method, so as to ensure the beauty and protection effect of the exterior wall coating.