First, leave a seam.
1, the reason why the tiles can't be laid seamlessly:
1) There is an error in the tile. As we all know, no product can have exactly the same size and weight when it is produced. As long as it meets the relevant standards, we can call it a mistake. For ceramic tiles, products of the same batch and model may have deviations in length, right angle, edge straightness, etc. No ceramic tile has no errors in these aspects.
2) There will be some errors in the construction process. In the process of construction, besides the nonstandard construction method, there will be some errors in collage.
3) The most important thing about the influence of thermal expansion and contraction on ceramic tiles is that any object has thermal barrier and thermal contraction, and ceramic tiles are no exception. If the gap is too small, the adaptability of ceramic tiles to the environment will become worse. Due to the change of temperature, the tiles will be crushed and the normal service life of the tiles will be reduced.
2. It is suggested to leave a joint for common tiles in decoration: 1) When seamless brick and other wall tiles and polished tiles are laid, the joint size should generally be around 1- 1.5 ㎜ and not less than 1㎜. Air nails can be used as a reference. 2) The seam of antique brick is slightly wider, generally 3-5mm ... 3) The cultural brick of balcony exterior wall generally leaves a seam of about 5 mm..