Dry screed - What options are there

Basically, screed dries by itself - you do not need to do anything. In some cases, however, it may be advisable to support drying, either by rapid drying or by using underfloor heating. However, this must always be done wisely and exactly according to the instructions, otherwise cracking and shrinkage and thus reduced screed quality and load capacity are at risk.

The regular dry times of screed

Depending on the type of screed and the thickness of the installation, the drying time is very different. You must also distinguish between when a screed floor can be walked on, when it is ready for the floor and when it has completely dried out. With cement screeds, you have to expect up to 4 weeks for the readiness for laying, even under difficult conditions of temperature and humidity in the building and with high installation thickness even under certain circumstances even longer. CA screeds as floating screed usually have correspondingly shorter drying times. The quickest way is to use mastic asphalt screed - it can already be walked on after three days and can be further processed after around a week. But it can also be used only on the ground floor and is more expensive than traditional screeds, often up to three or four times.

Generally to be observed during the drying phase

While a screed dries, it is generally important to remember that the room or room must be free of drafts so as not to disturb the setting process, but at the same time it should be ventilated regularly. This is best done at times with the least possible outside air humidity, so in the morning and evening, the windows should stay better. It should also be ensured that no major temperature fluctuations occur during the drying time - as far as this can be prevented. In addition, cement and concrete screed must always be kept moist for a certain time after installation.

Underfloor heating and heating

If the screed on a floor heating is according to a specific heating plan depending on screed type - here after the first drying phase, the heating temperature gradually increased up to the maximum of 55° and then slowly lowered, cement screed must then also about 3 days to cool to room temperature. The plans may need to be adjusted depending on local conditions and layer thickness. These plans must be strictly adhered to. The measurement of the remaining moisture content with a CM measuring device then provides information as to whether the documentary maturity has actually been reached.

Video Board: PROFIX UNDERFLOOR HEATING: Grooved dry screed board system