Since 1986, Joseph Hajjar Est has provided a wide range of quality products for use in all areas of construction & a wide range of innovative specialty construction chemicals and materials that includes: Spacers, PVC water stops, Tie rods, clips, Chamfers, concrete admixtures and fibers, products for architectural concrete, cement additives, masonry products, plaster products, Tiling products, air and vapor barriers, roofing polyurethanes, door and deck flashings, structural waterproofing systems and sound and heat protection products.