Coba DPM800 primer for absorbent substrates is suitable for priming all absorbent substrates indoors and outdoors, such as concrete, sand-lime brick, cement and anhydrite floors, as well as cement and gypsum-bonded plaster, cellular concrete, gypsum blocks, plasterboard and gypsum fiber boards, and waterproof plywood. Coba DPM800 reduces absorption and optimizes adhesion. Coba DPM800 is ready to use and solvent-free. Not suitable for use on non-absorbent substrates, such as existing tiling. For this purpose, use Coba DPM810 tile-over-tile primer.