First of all, solve the problem of external wall tiles falling off.
1, only the mortar of the tile did not fall off.
At this time, all the mortar on the brick can be scraped clean, and then a proper amount of cement can be added to the 107 glue and stirred into a paste. Then apply a thin layer on the back of the tile, and then stick the tile on the previously pasted wall, and it will be glued in a short time.
2, ceramic tile and mortar fall off at the same time
This situation also happens from time to time in the process of re-tiling. First, dig some small holes where the tiles fall off the wall. Then use 107 glue mortar to re-paste, press the ceramic tile tightly on the wall, wait for a period of time, and then open your hand.
3. Take out the damaged wall tiles.
Cutting a groove of 5-6mm around the damaged wall brick with a cutting machine; Gently scrape off the cement at the joint of wall brick with a cutting knife; Then cut a hole in the glaze on the surface of the wall brick with a cutting knife to break the wall brick and take it out; Break the wall brick with a hammer and take it down. If the cement sticks too firmly, you can remove the broken wall bricks with a hammer and chisel.
4, stick a new wall brick
According to the proportion and description in the manual, mix the beneficial cement evenly; Wipe the beneficial cement on the wall and smooth it with a spatula; Gently stick the color of the wall brick on the wall; Tap the wall brick and its surroundings with the wooden handle of the hammer to knock out the air. The bonding performance of cement is stronger than that of cement, and it is suitable for small area use. Glass tile glue is more suitable for sticking a single tile on a plane. If used for wall tiles, it will fall off more easily than cement and cement.
5, tile caulking
Mix the tile sealant evenly according to the proportion indicated in the instruction manual; Use a sponge spatula to wipe the joint filler into the gaps between the wall tiles; After the sealant is half dry, soak the sponge in water, wipe off the excess sealant and dry it.
Second, measures to prevent external wall tiles from falling off
1. When laying ceramic tiles, it is required that the cement slurry bonding layer be evenly coated, and the coating time should not be too long, so as to avoid the wind drying and hardening, resulting in the separation of the surface layer from the base layer and the bulging.
2, in strict accordance with the mixture ratio of mixing mortar, can't add water at will, mortar to use harsh, general thickness control in 2-3 cm is advisable.
3, the shop is stuck brick, should clean up the dust on the back, water wet, ensure its good bonding. When bricklaying, the four corners should be pressed hard at the same time, so that they are in parallel contact with the mortar, 2-3 cm higher than the stay wire, and then struck with a wooden hammer or rubber hammer, and the surface should be leveled with a spirit level.
4. After paving a piece, lay it in order to both sides or backward. If subsidence is found, the tiles should be lifted and leveled with mortar before laying.
As we all know, the tiles on the exterior walls of some houses are very unsightly, especially in some high-rise buildings, which brings great security risks. Therefore, we must remember the remedial measures for some external wall tiles that Bian Xiao taught his friends when they fell off, and how to prevent them from falling off. I will continue to share other knowledge and information with you, so please pay attention.