Deck-O-Seal One Step is ideal for glazing operations and sealing all joints in concrete structures. It bonds well to masonry, glass, metal and wood. It is ideally suited for application wherever a permanent water-tight seal or expansion joint is required on glass enclosures, curtain walls, prefab panels, expansion joints, bridges, highways, roofs, etc. NOTE: Do not apply paint over surfaces sealed with Deck-O-Seal products. 11 oz. cartridge. More Details