We really need to pay attention to the decoration of the waterproof wall surface. Because the effect of waterproof coating after brushing will really affect the bonding performance of surface materials to a certain extent. Home miscellaneous altar will take the following questions as an example to analyze the problems between waterproof wall and batch scraping putty. How to solve the problem that the wall of my house is too smooth to be painted with white ash when it is waterproof?
In this question, I want to paint the waterproof wall with white ash. The white ash here actually refers to the batch of putty scraping. For this problem, the method given by the household miscellaneous altar can be carried out from three aspects: one is to solve the wall surface, the other is to change the batch scraping materials, and the third is to change the batch scraping method. The following home miscellaneous altar will answer this question from these three aspects. Scheme 1 solves the problem of smooth wall surface
To solve the problem of smooth wall surface, some special materials are used to treat the finished waterproof wall surface. The purpose is to strengthen the joint point of waterproof wall, so that the materials we scrape have adhesion, so that they can be effectively combined with waterproof wall.
measure 1: brushing or napping cement slurry
brushing or napping cement slurry means mixing cement and water evenly according to the ratio of 1:1, and finally forming the shape of cement slurry. After that, you can use a special wool spraying machine to spray wool, or you can use a broom dipped in evenly stirred cement slurry to pat and nap the wall.
operation steps: 1. prepare the cement and water used and the corresponding preparation tools. Second, put cement and water in a bucket or other tools according to the ratio of one to one, and stir them evenly to make them into a uniform cement slurry shape. Third, use a special hair spraying machine to spray hair on the waterproof wall. Of course, you can also use dipping cement slurry to pat on the wall to nap.
inspection requirements: after spraying wool on the wall, we should check the strength of spraying wool. We can use our hands to break the particles formed by our hair spraying: if it is almost immovable and has strong strength, then the hair spraying is qualified; If it can be easily broken off from the wall, it means that our wool spraying is unqualified, so we need to change the material or spray wool again.
measure 2: use cement to add glue or a special material to spray wool
if it is found that the effect of spraying wool with pure cement slurry is not particularly good, then I personally suggest adding a certain amount of building glue, such as the most commonly used 18 glue, to the cement slurry at this time. Or we can go directly to buy finished wool-spraying materials. This material is made by adding glue to cement. When these materials are used for wool spraying, the strength of wool spraying will be higher.
operation steps: 1. add glue to the cement slurry to be used and stir it evenly. Or we can mix the finished product's wool-spraying materials evenly according to the required proportion. Second, we also use a special machine to spray hair on the wall. You can also use a broom to beat on the wall. Finally, a uniform wool spraying effect is formed on the wall surface.
Important: Before spraying wool on the wall, make sure that the wall is free of dust. Therefore, I personally suggest that you water the wall before spraying wool to wash away the dust. Then make sure that there is no moisture in the wall before spraying hair, so the effect will be better. Option 2: Choose a material with strong viscosity for batch scraping < P > Because we use ordinary white ash, that is, the putty made of ordinary putty powder is not particularly good in adhesion, and it is easy to be too thin or too thick. Therefore, it is very difficult to scrape on the waterproof wall. Therefore, I personally recommend that you buy the finished waterproof putty paste to scrape on the waterproof wall. Using the high viscosity of water-resistant putty to solve the problem of batch scraping.
Selection suggestion: At present, there are many kinds of water-resistant putty pastes for finished products on the market, so you must choose some putty pastes with high local usage and good feedback. In this way, it is more viscous than Qualcomm and less polluting.
operation suggestions: 1. before scraping the water-resistant putty, clean the wall surface without dust. Second, use the finished putty paste to make a thin base on the wall. This is easy to combine with the waterproof of the wall. After the priming putty is basically solidified, go to the formal batch of putty scraping. At this time, the putty is usually completed three times, that is, once at the bottom, once at the bedding face, and finally at the surface. Scheme 3 adopts the auxiliary batch scraping method
batch scraping putty on the wall. If we find that after batch scraping, the back will be separated from the wall, then we can adopt the auxiliary method to batch scraping putty. The most common method of auxiliary batch scraping putty is to hang a net to batch putty. Using the net we hung as the skeleton and then combining it with the wall surface, we can effectively batch putty scraping.
material selection: when we scrape putty, the common nets are alkali-resistant glass fiber mesh cloth. At this time, it is not recommended that you choose ordinary cool cloth or steel mesh. These are not suitable for large area putty layer.
operation steps: 1. according to the approximate size of our wall, cut the alkali-resistant glass fiber grid cloth to be used according to the size. Second, paste the alkali-resistant glass fiber grid cloth that needs to be hung on the wall surface, then use putty to make the base immediately, and then scrape it in batches. The purpose of this putty scraping is to cover the net and then combine it with the wall. Third, when the primer putty has a certain strength, and it is allowed to scrape the putty for the second time, it can scrape the putty in a large area. At this time, it can basically be bonded to the wall.
Attention: First, the putty should not be scraped too thick in the first pass. You can't scrape the putty very thick in order to cover the net, which will affect the quality of the putty. Second, after the putty batch scraping is completed, there can be no net exposure. That is to say, when we finally polish the putty, the alkali-resistant glass fiber grid cloth cannot be polished out. Conclusion
Waterproof walls need to be decorated later, so when we waterproof the bathroom walls, I personally suggest that you choose polymer waterproof coatings as far as possible, and try not to choose pure chemical waterproof coatings. In addition, on the waterproof surface, I personally suggest that you should be able to nap or spray hair. Then choose the appropriate batch scraping or pasting materials, so as to ensure the quality.