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For inexperienced landlords and friends, in the face of renovations, it will inevitably overlook many details. The hollowing out of tiles is a decoration problem that many people worry about. How to avoid the hollow phenomenon of tiles? There are several aspects that need attention. 
1 Select the tiles with deeper back veins. When designing, the ceramic tiles on the back will be designed as lines. This is to make the tiles and the wall can be in close contact with each other. It is not easy to fall off. It is worth noting that the deeper lines can To ensure that the tile and cement mortar layer partially detached but will not fall off, so you should pay attention when you choose to buy, try not to choose the tiles on the back of the light lines.
2 Select low-water-absorption tiles If you want to avoid empty tiles, then a good way is to avoid buying tiles that have high water absorption. When you buy ceramic tiles, you have to understand the water absorption rate. The main test method is to Water droplets on the back of the tile, to determine the speed of infiltration after the water spread to determine, the slower the water absorption shows that the greater the density of the tile, the contrary, then the density of the tiles is relatively sparse, relatively high water absorption, such tiles do not choose to choose Because the water absorption rate is too high, it will be very easy for the tiles to expand and empty.
3 Select sand effect Another way to avoid empty tiles is to choose good sand, generally the sand can be divided according to the thickness of fine sand, sand, sand and coarse sand in four, thicker sand deployed out of the cement mortar The intensity will be higher, but you know, not the higher the intensity, the better, the fine sand is not a good choice, because the adsorption capacity is poor and difficult to paste the tiles, so in the home wear is recommended to choose Zhongsha, Its grain size is moderate and it is suitable for use as an adjunct ceramic tile in cement mortar.
4 The ratio of cement and sand should be appropriate in the home improvement. Generally, the dry brick is used in the floor tiles. The cement sand is mixed in a ratio of 1:3 and then mixed with a small amount of water to form a cement. The general paving bricks are wet-laid, and the mixing ratio of cement sand is 1:2 and it is more appropriate to mix and match water. Too high proportion of cement mortar can lead to excessive moisture loss after drying, resulting in tile emptying. At present, the more common cement on the market is divided into 225#, 325#, 425#, and 525# four models, different types of cement will adapt to different concrete needs, in the home wear generally use 325# cement will be better, because in Most of the cement in home improvement does not need too much bearing capacity, so it is not necessary to choose high-grade cement. In addition, special attention must be paid to the quality of the cement when selecting cement, and it is necessary to avoid selecting inferior products as much as possible. In the renovation, the owners pay attention to the above four aspects, you can avoid the phenomenon of empty tiles to a maximum extent.
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