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Cement, the tile should be soaked in water, the four corners of the back should be smeared with cement, and there should be a little in the middle, and the ground should be smeared with cement.
The watering can sprays a mist of water and scrapes it clean with a tool that has a strip to scrape the glass.
Use a blade to get it down, if the back is not firmly glued, then remove the original cement and then stick it with tile glue or cement.
Just plug it with structural adhesive! It can't be said to be bonding! >>>More
If the thickness is less than 5 cm, mortar ash can be used, and more than 5 cm can be used bean stone concrete.
Ceramic tiles must be pasted by a professional bricklayer master. Do not touch it within 24 hours after pasting, otherwise it will be "empty"!