USG Creates LEVELROCK CSD Early Exposure Underlayment

USG Corporation has announced that its LEVELROCK® brand CSD™ EARLY EXPOSURE™ floor underlayment can be poured up to 60 days before a building’s permanent windows and doors are installed in geographic areas not subject to freezing conditions (only up to 30 days in areas subject to freezing conditions). Designed for use in buildings with light-gauge steel frame construction, this innovative underlayment product can be applied over corrugated steel decks, giving architects an economical means of designing midrise buildings up to 10 stories high. As a result, construction professionals can build higher, lighter and faster than ever before. The hybrid cementious underlayment provides high early strength and outstanding moisture resistance, enabling streamlined trade scheduling and speeding the construction process. LEVELROCK CSD EARLY EXPOSURE features compressive strengths from 3,500 to 5,000 psi for incredible durability in the most demanding applications. The underlayment also can withstand the rigors of trade traffic throughout the construction cycle, eliminating the need for any floor patching before the finished floor is installed. In addition, its smooth, monolithic surface enhances worker safety and efficiency. LEVELROCK CSD EARLY EXPOSURE underlayment can be applied at a much lower thickness than poured-in-place concrete, reducing dead load and allowing a greater number of floors for increased rentable/sellable square footage. Its self-sealing technology typically eliminates the need to seal the underlayment prior to floor-covering installation.Other key product benefits include:•    Up to 55 percent lighter than 3 inches of concrete•    Typical pour thickness is just 1-9/16 inches with a standard 9/16-inch deck •    UL-rated assembly provides one- and two-hour fire ratings for safety/insurability•    Systems available to meet stringent IBC (International Building Code) sound control requirements for IIC (Impact Insulation Class) and STC (Sound Transmission Class)A licensed structural engineer should evaluate building loads and the framing system to determine whether a corrugated steel deck flooring system is appropriate.  If so, the product is then applied by a USG-authorized LEVELROCK applicator. For additional information, visit www.levelrock.com.