Abstract: A method of reducing deterioration or corrosion of a concrete substrate, including adding or applying a first sealer to a concrete substrate prior to or after pouring thereof, or applying the first sealer after at least partial curing of the concrete substrate. After at least partial curing of the concrete substrate, a penetrative silane second sealer is applied to at least one surface of the substrate, with the second sealer differing from the first sealer. The sealed product comprises an at least partially cured concrete slab having nanopores substantially filled by a first sealer, and a coating of a penetrative silane second sealer on at least one surface of the concrete substrate, with the second sealer differing from the first sealer.