BAUMASTER silicate and silicone plaster primer made on the basis of silicates and acrylic resin and silicone additives and carefully selected fillers is designed to strengthen, impregnate and colour the substrate. It is a ready-to-use, shallow penetrating agent intended for priming substrates for indoor and outdoor silicate and silicone structural plasters. It is used to strengthen and increase the adhesion of the substrate and gives the substrate the right colour.