Damtite Waterproofing 05160 Damtite Interior/Exterior Bonding Liqud QtA high solid, water resistant, acrylic resin designed as an admixture for thin Portland cement coatings, concrete repair resurface powder mixes, thin set mortar, tile grout, plaster and stucco. It improves the adhesion, durability and resistance to chemicals and acid by reducing the surface permeability. Excellent additive to Damtite powder Waterproofers, thin set cements, grouts and packaged concrete mixes. Ideal to improve the adhesion of coatings