Thompsons 010100-18 TH.10100-18 Multi-Surface Waterproofer, Aerosol, Clear Will effectively seal any porous material against damage by water, including concrete, brick, stone, plaster, wood, and asbestos When used as an additive to, or under-seal for solvent thinned paints, it shields paint against weather. Is unsurpassed as a penetrating sealer for concrete hardening and dust-proofing, and meets ASTM C309 specifications for concrete curing Clear waterproofer 10100: 12 oz aerosol