To avoid hollow in tile paving, 9 points should be paid attention in tile paving.
Emptying rate is an important part of tile acceptance. Non-standard operation when paving will plant empty drum hidden dangers, if not handled in time, after the arrival of tiles will appear arch, off phenomenon, and often need to re-thick brick re-shop.
Tiles hollow are a lot of trouble, so from the time of construction, we must pay attention to avoiding minefields and reduce the possibility of empty drums.
1. Squeegee should be evenly applied
Tile adhesive or cement mortar needs to be evenly and completely applied to the back of the tile. If the adhesive cannot completely cover the back or the thickness is not uniform in order to pursue the speed, it will exacerbate the emptying of the tile.
2.Pay attention to the seam of the tile
Whether to reserve the paving gap will also affect the emptying rate. It is generally recommended that a 1 to 3 mm gap be reserved for the paving distance between brick and brick. Walls and paving materials all have a certain coefficient of expansion. If the paving does not leave seams, there will be no space for expansion after expansion, and the tiles will empty.
3.Thoroughly clean tile back mortar
It is not uncommon for empty cases to be caused by direct plastering of tile back grout without cleaning. The process of tile production and processing will leave powder or mortar on the back of the tile. If this layer of powder or mortar is too thick or too thick, a barrier layer will be formed before laying to affect the combination of cement mortar and ceramic tile and reduce the adhesion force. Empty drums. Even if tiles are soaked in water, there is no guarantee that this layer of mortar has been removed. Therefore, check before laying to make sure that the mortar has no residue to ensure clean.
4.Thick and thin stickers
The choice of thick or thin paste may also be the reason for the hollowing. Foreign adhesives are more suitable for thin stickers. The thin-adhesive technology allows some adhesives to be in the range of 3mm to 5mm, while the general flatness of Chinese buildings is not very good. Under such circumstances, the use of thin The affixing process is difficult to smooth and prone to problems. Although thin stickers are more economical, based on the current status of China's construction, thick stickers are a more secure method. Thicker adhesives are often used up to 20 mm to smooth the entire decorative surface.
5.Press the tile timely after paving
After the tiles are laid, they must be pressed and pressed in time, which can make the cement mortar or tile adhesive more uniform and enhance the adhesive force. Tiles can also be hit with rubber hammers.
6.Too much pulp or glue
In order to pursue efficiency, many masters will increase the amount of cement mortar that is mixed in a single shot. After the construction is completed, cement mortar that has been put for too long will volatilize, and the effect is not so good. The next day's cement mortar gradually loses its plasticity and begins to harden, and it cannot be used basically.
The same is true for tile adhesives. A too large area of a single application can result in the dryness of the surface of the mortar that is not ready for construction. When tiling, tile adhesive rubber area should be controlled within 1 square meter, in case of outdoor dry weather wetting the wall first.
7.Guarantee cement mortar ratio
The proportion of cement mortar is not correct, the proportion of sand is too high or no adhesive is added to the mortar, resulting in insufficient adhesion force; the proportion of water added is too high, cement mortar will gradually separate from the ceramic tile during drying, and empty drums will also occur.
8.Handle the grassroots
If the base of the wall and ground is not cleaned up, and the cement mortar on the back of the tile cannot be bonded to the wall ground, empty drums will also be caused. In particular, the white putty layer on the rough house wall must be cleaned before the tiling, and the hair removal process is also required.
9.Soak tiles in water
Tiles (especially glazed tiles) should be soaked in water for more than 2 hours before paving, allowing the tiles to absorb enough water. If the water content of the brick body is not saturated, the moisture in the mortar will be absorbed prematurely, causing the hollow shrinkage of the mortar and affecting the adhesive strength.
Tiles (especially glazed tiles) should be soaked in water for more than 2 hours before paving, allowing the tiles to absorb enough water. If the water content of the brick body is not saturated, the moisture in the mortar will be diffuse prematurely, The hollow shrinkage of the mortar and affecting the adhesive strength.
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