Drylok latex bonding agent bonds new concrete, stucco, stone, plaster and more to structurally sound, difficult surfaces like dense, slick or porous concrete, stone, drywall, hardboard and plaster walls. When used as an additive in concrete mixes for patching, Drylok latex bonding Agent improves adhesion and increases the resiliency and elasticity of the patch. Drylok latex bonding Agent may also be used for pointing plaster cracks.