Although Floorify floors are insensitive to moisture, the surface must always be checked for damp problems. In this case, the surface will need to be made moisture-tight before the floor is installed. Moisture under the floor could cause harmful mould and rising damping can push the joints upwards. This is certainly something to be avoided.
SOME POINTS FOR ATTENTION WHEN LAYING SCREED OR CONCRETE:
Make sure that freshly poured concrete or screed has sufficient time to dry. The moisture content of the underfloor must never be more than 2.5% CM (cement bonded subfloor) or 0.5% CM (anhydrite surface). If underfloor heating is used, the results should be 1.5% CM (cement bonded subfloor) and 0.3% CM (anhydrite surface). Always go through the heating protocol. Measure, document and keep the results of moisture measurements.
The maximum residual moisture percentage in the subfloor:
| Anhydrite | Cement | Wood | |
| No underfloor heating (CM) | <0.5% | <2.5% | <14% |
| With underfloor heating (CM) | <0.3% | <1.5% | Not applicable |
Tip: Make sure that the room is always well ventilated