Grunto Plast is a universal primer for difficult substrates - it improves the adhesion of adhesive, waterproofing and putty compounds to surfaces with low absorbability, to extremely smooth surfaces or to surfaces covered with old PVC glue and paints, etc. It is intended for priming the following substrates: smooth concrete, old tiles, terrazzo OSB boards, as well as plasterboards, gypsum and cement plasters, unplastered walls made of all kinds of bricks, blocks, blocks, concrete and anhydrite screeds and wood-based substrates. Grunto - Plast is a ready-to-use mass, produced on the basis of acrylic resins and quartz flour, for indoor and outdoor use.