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Clear waterproofing sealer for concrete floors, walls, patios, driveways, swimming pools, etc. Reduces concrete dusting. Protects against chipping and spalling from de-icing salts and freeze-thaw cycles; stops water seepage from hairline cracks and mortar joints in basement walls. Seals, waterproofs, and preserves all porous materials. Will not harden fabrics or leather. May be added to oil base primers, finish coats, porch and deck enamels, etc. Makes paint flow more easily, free from roller and brush lap marks. Does not change sheen or color. Also can be applied to painted or unpainted surfaces as an underseal to greatly lengthen paint life. Contains no silicones. 12 oz. aerosol.