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Foundation Armor manufactures sodium silicate and lithium silicate concrete densifiers and surface hardeners. They penetrate deep into the concrete where they chemically react to form calcium silicate hydrate (CSH) within the pores. The permanent structure formed as a result of the chemical reaction will help to increase the strength and density of the concrete by up to 45%, reducing the movement of water through the pores and reducing concrete dusting. Foundation Armor concrete densifiers work entirely below the surface, and won’t leave behind a visible film or surface coating. They are great sealers to use if you are looking to increase the strength or density of your interior or exterior concrete.