There are tons of articles and posts regarding the use of Green Glue to soundproof walls, ceilings, and floors. We have had experience using the Green Glue for over 5 years now. Green Glue is a Visco Elastic Damping Compound that is used in conjunction with multiple layers of wallboard, In essence, the Green Glue applied between 2 layers of drywall will damp both layers of drywall (remover the resonant frequency of the drywall) or the ability of the drywall to vibrate and thus transmit sound.
Normal drywall and even the soundproof drywall still can have a tendency to transmit sound. The Green Glue is an excellent retrofit soundproofing agent. In other words, if you already have drywall up on your walls and wish to soundproof the wall, you don’t have to remove the existing drywall. All you would need to do is apply the Green Glue to a new layer of drywall and once the Green Glue is applied, simply screw the drywall over top of your existing drywall with the Green Glue sandwiched between the 2 layers of drywall.
Basically, you would place a layer of quality 5/8” drywall onto saw horses and then take a tube of the Green Glue and cut the tio of the tube to give you a ¼” round bead. Then simply shoot the drywall from the Green Glue tube using and ‘S’ pattern, back an forth, The ‘S’s would be about ½: apart. You will need to apply 2 full tubes to each layer of 4’ X 8’ drywall. Once you have 2 tubes applied with the ¼” bead, you will leave the Green Glue with the bead you do not want to trowel of smooth it out. It’s visco elastic properties will allow the GG to spread out evenly and completely dame both layers of drywall.
I always recommend using at least 2 tubes of Green Glue for each 4’ X 8’ sheet of drywall and I always recommend using the 5/8: drywall in most applications.
Before applying the new layer of drywall to your existing wall you will need to move and electrical outlets or light switches out about 5/8” or so to accommodate the new layer of drywall. We also recommend that your seal up all electrical outlets and light switches using the Nielson Fire stop putty pads. This will seal the electrical outlets and switches and prevent the sound from transmitting through these open areas. You also may want to put a small bead of silicone caulk around the perimeter of the light switch cover as well as the electrical outlet cover. Once all the electrical has been repositioned and the boxes sealed with the putty pads, it is time to install the Green Glue laden drywall. You will still use drywall screws to affix this new layer of drywall. The Green Glue compound will be sandwiched between the 2 layers of drywall. Make sure to bring the drywall screw down tightly to force the Green Glue into both layers of drywall. Using the Green Glue method will give you instant soundproofing when first applied, but give the glue 30 complete days to completely cure before judging your results There you have it. Green Glue for eadsy and effective Soundproofing. This is Dr. Bob, Adios!
www.soundproofingamerica.us
e-mail bob@soundproofingamerica.com
PH (877) 530-0139
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