Use Radiant Paints Liquid Bond (RP-BL846) as your ultimate nanotechnology bonding agent. Radiant Paints specifically developed and laboratory-tested it to waterproof and prime roofing and concrete surfaces. This super-concentrated, water-based primer penetrates deep into porous or powdery surfaces. Want to paint a porous tiled roof, or repair and seal a balcony or concrete slab? Simply use Liquid Bond to seal, strengthen, and waterproof the surfaces from within! Its alkali-resistant barrier stops efflorescence and crumbling, so you effectively transform unstable substrates into rock-solid ones. The result, a perfect flawless primed surface for any topcoat (acrylic, enamel, epoxy, etc.) or ceramic tile that follows. Peruse the product page for full details and data sheets.