Cement mortar has a relatively short drying time

The drying time of cement mortar is under normal circumstances a few hours. For external processing such as painting or smoothing that's enough. The cement mortar may only be subjected to mechanical stress after hardening, which takes much longer. Caution should be taken when sealing paints.

Beware of artificial acceleration

Cement is a porous material that contains water. It dries from outside to inside. If the surface is already dry, the deeper substance of the cement mortar is still drying. The order thickness plays the crucial role. Per centimeter at reasonable other conditions, a drying time of about five hours must be expected.

An artificial acceleration of the drying time by hot air blowers or heat radiators may only be used with cement mortar with appropriately designed additives and additives. Otherwise, "natural" cement tends to crack, which can penetrate deep inside the job.

Cement sweats during the dry season

After optical dehydration, the cement mortar can already be processed externally. If sealing spreads are to be applied, however, the significantly longer curing time of the cement must be taken into account.

Especially from new buildings, the "sweating" of concrete walls and floors is known. This effect is also being developed to a lesser extent by cement mortar. As long as the setting lasts, as long as the cement displaces water from the inside and sweats. This property must be taken into account.

Tips & Tricks

Calculate per centimeter of material thickness with a drying time of five hours and a hardening after two to three days. For example, if you create square dot or strip foundations with the side dimensions of five centimeters, the external drying should be observed after five to ten hours. The setting and curing takes up to two weeks.

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