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Directly do waterproof brush paint or waterproof porcelain after hairing.
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See what you want to do in the end? Or what effect? Please refine your question.
First of all, the interface of the base layer is processed. Generally speaking, before the bathroom is tiled, it should be brushed with a layer of waterproofing, and the effect of this waterproofing is not only waterproof, but also the function of chiseling the grassroots interface, which can help paste tiles and improve the adhesion of walls and tiles. If you don't brush waterproof, you can brush a layer of wall solid at the base layer for interface treatment, and at the same time increase the fastness of the wall and the adhesion between the tile and him. >>>More
If it is oil, if the grease is more severe, you can prepare some thick pieces of paper. >>>More
Install a water heater with a lid that can be blocked
It is recommended that the landlord clean it with citric acid or oxalic acid, which can be bought in chemical stores, and the effect is very obvious!
It is necessary to shovel off the original wall of the bathroom, then brush the waterproof paint, and then re-pave the tiles, so as to prevent the wall from peeling again. >>>More