To mix gypsum

It is forbidden to mix gypsum solution for a long period of time, otherwise the product will turn out to be fragile. In gypsum products, in order to avoid the appearance of rust in steel reinforcement, it is recommended to pre -coat it with varnish, olifa or oil paint. Foam formed on the surface, during mixing the gypsum solution, should be removed. Otherwise, gypsum will become fragile and porous.