Original concrete trade vintage catalog for CENTRAL IRONITE WATERPROOFING. COMPANY. Main office was located at 111 West Washington Street, Chicago, IL. Contractors for concrete restoration and waterproofing. Ironite is a finely divided powder made from gray cast iron. This powder is treated chemically and physically to produce the necessary waterproof qualities through the rapid oxidation and development of the iron particles. This unique 1931 old one page building construction brochure would be a marvelous addition to your retro design and engineering library. It would display beautifully matted and framed.