Founded in 1950 and located in St. Louis, Greenstreak specializes in the manufacturing and marketing of special products for the concrete and masonry industry. The company provides a wide range of products, such as waterstops, joint seals, doweling systems, architectural form liners, drainage products and a variety of forming accessories. It has a staff of professional and trained technicians and civil engineers and utilizes advanced technology methods. Greenstreak provides polyvinylchloride waterstops that feature unique physical properties suitable for various applications, such as water and wastewater treatment facilities, dams, canals, water reservoirs, tunnels, foundations, and primary and secondary containment structures. Additionally, Greenstreak offers G-Seal, a joint sealant used for new construction and retrofit applications. The company also provides Speed Dowel and Laser Form products for correct placement and arrangement of steel dowels at flatwork joints. Its products are used in manufacturing facilities, entertainment centers, warehouses, and commercial and industrial facilities.