Today I answered a question from an owner. The owner said that his home was putting on ceramic tiles. Before putting on tiles, the tiler had to paint a layer of glue on the wall, but he didn't want to paint the glue. I would like to ask what the purpose of brushing this layer of

Today answered a question from an owner. The owner said that his house was putting on ceramic tiles. Before putting on tiles, the tiler had to paint a layer of glue on the wall, but he didn't want to paint the glue. He wanted to ask what the purpose of brushing this layer of glue was? Can you not brush it?

　　Through this question, we can find that the owner is very careful and his attitude is worthy of praise.

　　First answer what is the purpose of brushing this layer of glue?

　　The function of brushing glue on the wall is to make the glue form a layer of film on the wall, which can slow down the moisture in the cement mortar on the back of the ceramic tile is absorbed too quickly by the wall.

　　For example, if we put a piece of toilet paper and an ordinary a4 paper back to back, and drip a drop of water on the seam between them, you will find that most of this water is absorbed by toilet paper, while ordinary a4 paper absorbs very little moisture.

The purpose of brushing this layer of glue is to make the toilet paper absorb water slowly and make the water absorption rate of the two papers similar, so that the tiles can be firm.

　　This is very intuitive, everyone should understand.

　　This layer of glue does not require brushing all tiles. Thin tiles are not required to be brushed. Only tiles laid directly with cement mortar will have this link.

Finally, let’s talk about whether this layer of glue can be brushed without brushing?

　　This layer of glue can be used without brushing. The premise of not brushing glue is to spray water in time on the wall where the tiles are pasted. One method is to allow the wall to absorb slowly, and the other method is to increase humidity to the wall. The final effect is similar.

　　These two methods are a bit different. You can brush the entire house at one time by brushing the glue. After brushing, you can just paste the tiles directly because the glue drys slowly. If you want to spray water on the wall, you have to spray one piece of it, because the water dries faster and is absorbed by the wall too early, and the desired effect will not be achieved.