It is important to distinguish between uneven floors and sloping floors. For an uneven floor, there is a tolerance of 5 mm over 3 metres. If you lay a long slat on the floor, any open space you may see under the slat must not exceed 5 mm. For sloping floors, the slope must not exceed 25 mm over 2 metres. For example, if the room is 4 metres long (in the sloping direction), the slope must not exceed 50 mm. If the slope of the floor is too great, there will be too much pressure on the clicking system, which could cause it to break. Discover here how to install Parquetvinyl.