According to experts, in principle, it is also possible to lay floors directly without dismantling the original floor tiles, provided that the original floor tiles meet the laying requirements. First of all, to check the flatness of the floor tiles, place a two-metre ruler on the floor tiles. The gap is less than 3 mm to meet the requirements.Second, it depends on the level of the ground. Levelness and flatness are not a concept. Good flatness does not mean good levelness. If the original height difference between the two sides of the ground is too large, it is not advisable to lay the floor directly on it. Because the level is not good, the angle between the wall and the ground is not 90 degrees, and the floor will have a certain gap with the wall surface. In the future, cabinets and other furniture that need to be placed against the wall will also leak between the walls.In addition, check the tiles for detachment, hollowing and bulging, especially for the inspection of the wall tiles. If there is any one of the problems mentioned above, it is recommended to remove the floor tiles and do not level them on the floor tiles."
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