UltraTile ProPrimer is an advanced polymer primer for exceptional bond and is suitable for use on both porous and non-porous substrates and is designed to give maximum penetration into the substrate to enhance surface preparation for bonding when tiling or screeding. Its versatility is ideally suited to all-round tiling use and the product ensures an exceptional bond every time. UltraTile ProPrimer may be used with underfloor heating and is suitable for use on calcium sulphate screeds. UltraTile ProPrimer is suitable for interior and exterior wall and floor application on both porous and non-porous substrates including; concrete, sand/cement seed, plywood overlay, tile backer boards, cement faced fibre, anhydrite screeds, tile on tile, firm and stable plaster, plasterboard, sand/cement render, concrete brick/block, hard vinyl tiles and flooring grade asphalt.