Renovation of the bathroom of the old family house

That's sure to be high.

At present, there is no waterproof material that can be made on the tile floor in the home decoration, and the effect can be good. . . Taking a step back, the floor is guaranteed to be waterproof, but what about the walls? The wall is also a tile how to do waterproofing, take 10,000 steps back and say that even if there is this new product, after the waterproofing is done, the light cement protective layer is 10MM, and then the tile paving layer even if the positive and negative drop angle is 0 degrees (generally the minimum is 3 °), with 425 strong large number cement paste also has to be nearly 30mm (this is still the number of floor drains, sewer and other pipelines ignored), the thinnest waterproof floor tile on the market at present also has to be 12mm, which is nearly 60mm before and after, It's still the thinnest and most ideal number.

Even if the floor can meet this standard, the bricks on the wall can't be pasted at all! Is there a door? Are there any windows?

Can a thin layer of ash on the wall hold the tiles? It's all a problem! If you want to repost without demolition, the basic possibility is equal to 0.

If you really don't want to dismantle it, you can consider sticking polyurethane waterproof, then using GS with cement to make a smooth surface, and finally pasting a stone-plastic floor on 3mm of epoxy self-leveling ground, barely holding on for three years.

Don't believe what temporary workers say to you that they promise to do a good job, that they won't be bad for ten years, and so on, people will take the money and leave, let alone ten years, and you will find someone in two months, and you won't be able to find it!

Hope it helps you, hope.

Personally, I think it's definitely high to stick a layer up like this, and I think it's better to re-paste it!