When tile masters tiled, they set aside a gap between them, presumably everyone has an impression. But do you know why you need to leave the seams in your paving tiles ? Today let us take this question and learn together why we should leave the gap in the bottom tile !
Why do you want to leave a seam on a paving tile?
(1) Thermal expansion and contraction
This is because ceramic tile, cement and mortar will have thermal expansion and contraction after they are laid. If the temperature or humidity in the room changes, they will undergo thermal expansion and contraction. If we do not leave the tiles, , The later tiles are prone to drumming or cracking, which will affect the normal use of the tiles.
(2) The construction error of the master
Even if you ask the tile master, whose skill is superb and superb, he will inevitably have some error errors when paving bricks. This is normal. If we do not leave seams on the tiles, it is difficult to guarantee the straightness of the tile joints, which will affect the continuity of the tiles. 
(3) Size error
Even if it is the same manufacturer, the same batch, the same type of tile, there will be some errors in the size between them, such as the length or straight angle and so on. If we do not leave seams on the tiles, then the tiles are prone to seam irregularities when paving, which will directly affect the aesthetics of the paving.
(4) facilitate later maintenance or replacement of tiles
In the subsequent normal use, if the tile needs to be knocked down due to a fault in the water line or the like, then if we had reserved the gap before, it would be convenient and easy to construct, and it would not affect other tiles. . 
What are the benefits of tile joints?
(1) Prevent emptying, deformation, cracking, warping, or falling off of tiles.
(2) It can save materials and reduce budget.
(3) Reducing the joint's unevenness due to construction errors
(4) Reduce construction errors
(5) Facilitate the construction of master tile workers
(6) Convenient for subsequent maintenance and replacement 
Tiles Note
(1) Generally, if it is a seamless tile, the reserved gap should be about 1-1.5mm. If it is a normal tile, the gap that needs to be reserved is about 3-5mm.
(2) If it is an antique brick or a cultural brick, then the reserved gap needs to be wider. Especially when laying tiles in the winter, the joints should be slightly enlarged to prevent thermal expansion and contraction, and the caulking will squeeze each other. . 
Xiaobian's words: The above is the relevant knowledge of Xiaobian and everyone to explain why the paving tiles should leave seams , and hope to give you some reference! More related content, you can pay attention to Qijia information, follow-up will show more exciting content Oh!
Why do you want to leave a seam on a paving tile?
Set Retarder is additive which can be used to retard the hydration of cement or gypsum. In many of construction applications, set retarders have to be used to achieve certain pot life or working time. Various types of retarders such Sodium Gluconate, Tartaric Acid, are adapted to different requirements for cement mortar, gypsum compound or concrete applications.
Set Retarder
Sodium Gluconate, Tartaric Acid, Retarder adjustment for Self-leveling compound, Gypsum Retarder, slump retention for concrete
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