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Soundproofing a Ceiling with Green Glue
By Robert W. Orther
If you have done any research on how to soundproof a ceiling from impact noise (footfall) as well as airborne noise, you have most likely discovered that a floated ceiling using sound clips and furring channels is the best way to combat these noises from above. In essence floating a ceiling on the sound clips and furring channels will offer you the best impact protection provided you add a layer of mass loaded vinyl directly to the open joists. This method of soundproofing is quite effective, yet it can be very costly to install and there is a great margin for error when floating a ceiling.
There is another method of soundproofing a ceiling from impact noise as well as airborne sound that is not quite as effective as the sound clip system, but it will offer you a cost effective solution to this problem by reducing the noise to a tolerable level.
The system I am describing is the "Green Glue" system. Green Glue is a visco elastic damping compound that when applied between 2 rigid hard surfaces, such as drywall, MDF or OSB and will act to dampen or change the resonant frequency of the wall board. A quick analogy is to visualize you ceiling as being a drum head, if the drywall ceiling has no been treated with the Green Glue the sound will resonate much like the sound of beating a drum head. Now if you add the Green glue to the equation you have in essence placed a finger onto the middle of the drumhead and completely stopped the resonance of the drum. This is precisely how Green Glue works in a ceiling application. Acoustical Consultants and others in the field have long known that in order to achieve the best soundproofing, you need to deaden or dampen the structure above as well as the drywall. Green Glue does exactly that; it deadens the existing drywall as well as the new drywall with the Green glue applied that you screwed into the existing drywall ceiling.
Will Green glue get rid of all the impact noise from above? Probably not, but will it make your life more tolerable? You bet it will. Green Glue is an economical and effective way to soundproof your walls, floors and ceilings from both airborne and Impact noise from the people living above you. Green Glue is effective in most condo and co-op situations and works remarkably well in lofts as well. When you're at your wits end and need to soundproof right now, Green Glue is the fast and effective soundproofing answer. For more in depth information about soundproofing your ceiling with Green Glue, go to www.greengluecompany.com and read the many testimonials on this product and see the test that were performed with Green Glue against Mass loaded vinyl, lead sheeting, Quiet Rock™ and Quiet Glue™. Green Glue out performs these and many other soundproofing agents hands down. Many companies such as Soundproofing America and Sound Isolation Company offer quality discounts and contractor pricing on the Green Glue. Thanks for reading. Dr. Bob…. out!
About the Author
Dr. Bob O.
Soundproofing America, Inc.
Senior Technical Director
Soundproofing Expert to The New York Times, The San Francisco Herald Examiner,
The San Diego Union Tribune, and the Charlotte Observer
Ph (877) 530-0139 Toll free Fax (347) 721-9079
E-mail: Dr.bob@soundproofingamerica.com
Website: http://www.soundproofingamerica.com
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