How to waterproof the floor tiles in the bathroom of the old house after they are shoveled

1. First of all, it must be shoveled clean and thorough.

2. Find out whether there are cracks in the floor slab, if there is, you can use materials such as micro-expansion anti-cracking cement to treat 3, use waterproof materials such as polyurethane to make a waterproof layer, more than 3 times 4, closed water test, more than 72 hours, no leakage can be carried out in the next process.

Is there a secondary drainage, if not, do a good job of secondary drainage and then do waterproof, waterproof polyurethane.

With polypropylene, you can do it once, it's okay if there are cracks in the ground, and you have to go to the wall 30 cm, otherwise the joints between the wall and the ground are easy to seep.

After the floor tiles of the old house are shoveled off, they should be exposed as cement-based, and they can be waterproofed according to the normal procedure. For waterproofing in the bathroom, we generally recommend the use of mortar waterproofing agent, which is not only firm in adhesion to the base surface, but also has high puncture resistance and can have the same life as the building.

After destroying the bathroom tiles will destroy the original waterproofing layer, all the original cement floor tiles must be broken, the floor is leveled and re-waterproofed, closed without leakage, and then tested to determine the paving.