Universal primer for all types of substrates. Recommended especially for smooth, high density and very low absorbency substrates such as walls, ceilings and other building components made of pre-fabricated or prefabricated concrete. Can also be used for cement, cement-lime plaster, gypsum and gypsum-lime plasters, as well as gypsum boards. The preparation is used to properly prepare the substrate before making plaster and gypsum plasters, cement plaster and leveling layers, thin-layer plaster in decorative and before using glue in gypsum and adhesive mortars. Wyb has the required documents for use.