Gypsum -based plaster.

The entire upper layer of plaster should be mixed with ordinary water, and it will instantly be ready for use.

Gypsum -based plaster. Often plaster is made from ground special gypsum by removing moisture from it. As a result of the processing, the powder is obtained that when mixing with water, it is grasped. All the time of the setting process can be regulated by means of special decelerators.