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Advanced Chemical Technologies, Inc. has been a leader in developing the highest quality silane weatherproofing treatment methods since 1976. Our patented technologies along with our premium silane-based penetrating treatments reduce moisture intrusion, reduce chloride ingress, reduce efflorescence, and reduce maintenance costs for your concrete and masonry. The treatment improves the aesthetics of your structure without changing it's appearance.     American Wick Drain Corporation is America's largest full-line producer of prefabricated soil sheet and strip drain material. The company was established in 1982 to design, manufacture and market technically advanced materials for subsurface drainage applications. More recently, AWD has developed products for roof ridge vents, cedar shingle vents, and roof gardens.     Founded in 1989, Aquafin, Inc., a member of the Schomburg Group, has established the reputation as a leader in the field of concrete waterproofing and vaporproofing and concrete restoration and repair. Aquafin is experienced in solving problems for numerous projects in water, wastewater, foundation waterproofing and specialized applications such as marine aquariums and vaporproofing of slabs.     For over 40 years, Balco has proudly serviced the AEC professional community. Balco is the source for all of your expansion joint and waterproofing needs. We manufacture a comprehensive line of expansion joint products for parking decks, and open-air structures. Balco offers a complete portfolio of products to meet all building applications.     LIQUID BOOT manufactured by LBI Technologies, Inc. has celebrated 25 years of success and proven performance of millions of in-place membrane. As the leader in spray-applied membrane technology, LBI continues to serve the waterproofing and gas vapor barrier needs of building owners, developers and specifiers. LIQUID BOOT is used to provide split-slab and below grade foundation waterproofing, gas vapor barrier protection as a brownfield liner, and is a NSF/ANSI 61 approved liner for canals, ponds and reservoirs.     Polyguard's Architectural Division began with Polyguard 650 membrane waterproofing, a product which by the mid 1990's was specified worldwide for foundations and plaza deck protection. In the 1980's above grade building envelope products were added for roofing, walls, flashing, decks, and tile underlayments. In 2003 Polyguard introduced the Underseal™ XT line, a below grade product line with more barrier features than any product on the market today. The Underseal™ XT line contains technology, proven over 30 years by state DOT usage and research, which reduces the amount of cracking in slabs and maintains a permanent seal when the slab does crack.     Situra, Inc. is the North American partner of SOBA-INTER, a world leader in the manufacturing of expansion joints for roofing and waterproofing. Situra has revolutionized the way in which building joints are waterproofed with the introduction of RedLINE, FlanLINE and AquaLINE products. These joints can be installed flat over a wide variety of substrates including concrete, roofing insulation, wood, and metal on both horizontal and vertical applications. All the products incorporate site-specific prefabricated details and easily incorporate plane changes, curves and angle changes.