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| New Green Glue sound isolating material Acoustical Solutions has introduced a new sound isolating material, Green Glue. Green Glue is a Visco-Elastic sound damping compound. Visco-Elastic materials damp vibration, minimizing the transference of sound vibration from one side of a partition to the other. These Visco-Elastic materials are used in a constrained layer damping system, sometimes referred to as CLD. Simply put, the Visco-Elastic materials are 'sandwiched' in between two sheets of drywall, plywood and subflooring. When the resulting sandwich is vibrated, the sandwich is bent, causing shear forces to pull and stretch on the VE damping material. This allows the damping materials to dissipate energy. In sound isolation applications, damping has one broad effect - it works to eliminate stored energy. Green Glue reduces drywall vibration, and therefore reduces the amount of energy transmitted through the insulated air cavity. This is particularly noteworthy in the problematic low frequencies that are normally so hard to block. In the common wood stud wall, the use of Green Glue also causes less energy to transfer to the other side via the rigid mechanical connection provided by the studs. In decoupled walls, such as staggered stud walls, the use of Green Glue means the connections at the top and bottom aren't nearly as detrimental to performance. Green Glue works extremely well in conjunction with common building materials as well as other specialized acoustical materials such as mass loaded vinyl, sound isolation clips, acoustic sealants and insulations. write your comments about the article :: © 2007 Construction News :: home page |