Tuff-Boy 1106 is a clear, non-yellowing, penetrating waterproofing sealer and conditioner designed for use on various types of architectural masonry surfaces. This unique product is easy to apply, fast drying, requires minimal surface preparation, and offers excellent protection against grease, oil, mild acids and alkalis, road salts, detergents, weathering, and acid rain. Tuff-Boy 1106 seals the surface of new and old concrete and gives the treated concrete a smooth surface which keeps the dirt out of the concrete and on the surface where it can be easily removed. Tuff-Boy 1106 also prevents alkaline salt buildup which can cause checking and dusting. One distinct advantage of Tuff-Boy 1106 is that it can be applied directly on top of itself without any special surface preparation.