Issues
When we were called for leveling floors, we found that the concrete slabs were cast in winter, and in extreme conditions. The result did not allow to install the flooring directly on the concrete floor. In addition, door frames were already installed inside the company system. We did a survey of the slab and found that there were very high points and very hollow points.
Solution
We did scarification in several locations to help maintain the best possible reference point 0 and to respect the requested tolerance of 3 mm to 3 m. Subsequently, we have leveled everything.
Results
Since the installer will ask flooring vinyl only in a few months, he will have to provide a little sanding and a small smoothing for light finishing patches. This floor therefore complies with tolerance in addition to having been made in the conditions of the existing site, that is to say, door frames already installed.