How long is the drying time for a new concrete floor or screed?
The concrete floor must dry long enough. You should allow one week per cm thickness of concrete, up to 4 cm. Allow twice as much time for the remaining thickness more than 4 cm. In other words, for a thickness of 6 cm, you must allow minimum (4 x 1) + (2 x 2) = 8 weeks drying time. For concrete thicker than 6 cm, allow 4 weeks drying time per additional cm. Rules of thumb: The building must be sufficiently ventilated. A plastic foil must be laid between the sub-floor concrete and the screed. Damp migrates from the bottom to the surface. This takes time. For new concrete floors, you must always lay a plastic foil on the concrete floor before installing the Quick-Step® planks; this is the case for the ground level as well as the upper levels. All Quick-Step® underlay floors have built-in plastic foil. Use Quick-Step® underlay floors to avoid problems later on.
