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ermickie 03-28-2009 11:10 AM

Soundproof Drywall?
Has anyone found soundproof drywall for their media room? I am unable to find it and we live in southern Ontario. I wish to add this to the exsiting drywall to lessen the noise level in the master bedroom. Thank you.

7echo 03-28-2009 08:59 PM

National Gypsum makes a product called Soundbreak. It is 2 sheets of drywall with a membrane between. You can also make your own using Green Glue and similar products.

Wildie 03-28-2009 09:42 PM

The thicker the drywall, the less sound is transmitted. So if you installed 5/8" drywall over the 1/2" you would have a total of 1 1/8" thickness.
You could fill the stud cavities with blown in cellulose insulation.
When I built my house, I built the bathroom walls using 2X6 top and bottom plates and off-set 2X4 studs.
Then I wove insulation bats in and out before installing 1/2" drywall to close the walls in.
As sound is 'telegraphed' through the studs, using off-set studs provides a 'break' between the two drywall surfaces!
In your case, if space permits, you could build another insulated wall, making sure there is no contact between the two walls and then finish the new wall off with 5/8" drywall.

Greg C 03-28-2009 09:51 PM

The best solution is to build a room in a room. No contact between the walls, ceiling, and a membrain between the floor and the base floor.

Gary in WA 03-31-2009 06:54 PM

I may have posted this before, if so sorry.

Maybe it could reference someone else. Be safe, GBR

KHouse75 03-31-2009 11:32 PM

I've used Green Glue with excellent results. No special drywall necessary, just 28 ounce tubes of green glue.

Since you already have existing drywall, you just squeeze 2-3 tubes randomly on the back of the new piece of drywall, lift it in place and srew it up.

I used 5/8" Type X drywall. It has a denser core which even by itself, provides quite a lot more sound deadening than just one sheet of 1/2".

goose134 04-05-2009 12:25 AM

Great link. I have a friend who could use this. I couldn't find any test data on ceiling retro fits with the green glue. What has your experience been?

KHouse75 04-05-2009 02:17 PM

I use the green glue on all the walls and ceilings in all the home theaters I build. you have to plan ahead with hvac pipes and other openings that will allow sound to be transmitted through them.We also use sound isolation clips to hold the drywall off the studs and joists which keeps the sound from transmitting through the studs to the other side.The really low bass vibrations are the most difficult to stop but we have never had to return to a customer location where we used green glue, staggered studs, insulation and sound isolation clips.we just build houses and do remodels and are not expert soundproofers but our customers was reasonable cost with good results and we found the above to work best without breaking the bank.

vectravl400 04-20-2009 04:14 PM

I've seen this stuff used on one tv show:

It's supposed to be acoustically equivalent to 8 layers of drywall.

jailbird371 05-22-2009 09:41 PM

I'm in the process of building a home theater right now. My walls and ceiling are all decoupled from the rest of the house and I will be insulating everything as well as 2 layers of 5/8" drywall with green glue in between.

AtlanticWBConst. 05-22-2009 09:51 PM


Originally Posted by ermickie (Post 251507)
Has anyone found soundproof drywall for their media room? I am unable to find it and we live in southern Ontario. I wish to add this to the exsiting drywall to lessen the noise level in the master bedroom. Thank you.

Quiet Rock;

We've installed it in many locations (some - per engineer design requirements), including Hospitals and Hospital executive offices (Patient confidentiality concerns), media rooms, private theaters, apts, condos, etc, etc, etc.

It works, especially when installed with sound attenuation batts, and additional sound deadening constrution practices: Staggered framing, acoustic caulking, dampening pads, resilient channel, etc....

jailbird371 05-23-2009 12:23 AM

Look through these articles....great information! I ordered all my decoupling clips from here.

gregdonovan 06-14-2009 08:37 AM

cool, i am friends with the guys that created the green glue company here in fargo. glad to hear it is so well recieved.

jailbird371 06-14-2009 09:08 AM

I'm not at the green glue stage yet, but I will definitely be using it in a few months.

JoanaC 05-25-2010 01:19 AM

AtlanticWBConst. Thanks for the info on quietrock.
Their product quietglue is about $35 cheaper than green glue.
I compared their test data, they are kind of the same.
So why pay extra money.

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