What is an acceptable moisture level in concrete floors?
3.5 to 4.5 % Moisture Content.
When using a Tramex Concrete Moisture Meter on clean new concrete 4.5% MC is considered "dry" in most conditions. In drier conditions, 4% MC is considered "dry". In Desert conditions generally, 3.5% is considered "dry". These numbers are %MC numbers on our Concrete Moisture Meters that are Calibrated specifically for concrete based on Gravimetric testing.