Multi-Seal is a high quality interior/exterior clear penetrating sealer designed for use on wood, masonry, concrete, stucco and metal in a wide variety of applications. Excellent for use as an undercoat for elastomeric and conventional coatings. Features high alkali resistance for surfaces up to 13 pH. Brightens, protects and deepens color on aluminum and vinyl siding and galvanized metal. Suitable as an anti-dusting sealer for properly prepared, un-sealed concrete floors.