Accoutic treatment for garage ceiling

[STICandy]

I am having my garage spray foamed next week and a friend of mine whom has had spray foam installed mentioned sound proofing performance of it is poor.

The garage is attached to the house and under the master bedroom so that is a concern for me.

Can anybody suggest some options for the drywall in order to attempt as much sound proofing as possible?

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[8man]

They spray foamed my garage, walls and rafters. Once the sheetrock was up on the ceiling, we put in R-30 blown fiberglass insulation. Works pretty good.

 

[STICandy]

They spray foamed my garage, walls and rafters. Once the sheetrock was up on the ceiling, we put in R-30 blown fiberglass insulation. Works pretty good.

You put a false ceiling below?

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[maxpower_hd]

I have fiberglass insulation in mine with 5/8 sheet rock between the garage and the living areas. Sound isn't bad but still present. The garage door opener is the biggest issue with noise.

But there isn't typically any noise while in the room above anyway.

 

[STICandy]

I should mention that the drywall will be directly screwed to the floor joists of the bedroom.

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[Jazz1]

So just how much racket is coming from master bedroom while you are in garage. Maybe a few taps on the ceiling with a broom stick might quiet them down.

 

[Radix2]

For insulation, cellulose is a much better sound deadener than fiberglass - a huge difference.

Also, rather than screwing the drywall directly to the joists, use sound (resilient) channels in between. Sound or resilient channels are thin metal furring you screw across the joists to isolate the drywall, they are inexpensive and simple to install. I also believe that improve the fire rating of the assembly a bit.

If you leave an opening at one side, you may be able to have the cellulose blown in to the joist cavities as a simple way to do it.

 

[8man]

Put batts in before the drywall goes on the ceiling.

Yes, I created an attic over the garage for storage, so there was a ceiling.

 

[66Caprice]

Use sound deadening board before putting up the sheetrock. They have 4x8 sheets at lowes and depot.

 

[matt_i]

One of the prime benefits of Roxul is its sound deadening. A coworker built a high-end theater room in his basement and packed the walls with same. He says it makes a huge difference.

 

[STICandy]

So just how much racket is coming from master bedroom while you are in garage. Maybe a few taps on the ceiling with a broom stick might quiet them down.

Lol. Obviously most noise up there only happens when I'm involved... [emoji6]

For insulation, cellulose is a much better sound deadener than fiberglass - a huge difference.

Also, rather than screwing the drywall directly to the joists, use sound (resilient) channels in between. Sound or resilient channels are thin metal furring you screw across the joists to isolate the drywall, they are inexpensive and simple to install. I also believe that improve the fire rating of the assembly a bit.

If you leave an opening at one side, you may be able to have the cellulose blown in to the joist cavities as a simple way to do it.

I think I'm going to look at the resilient channel, may make quite a difference

Put batts in before the drywall goes on the ceiling.

Yes, I created an attic over the garage for storage, so there was a ceiling.

With the 2 x 10 joists I assume there won't be enough space for roxul as well before the drywall goes in.

Use sound deadening board before putting up the sheetrock. They have 4x8 sheets at lowes and depot.

Interesting. Never heard of this. I'll look into it. Thanks!

One of the prime benefits of Roxul is its sound deadening. A coworker built a high-end theater room in his basement and packed the walls with same. He says it makes a huge difference.

I used roxul safe and sound In my basement with the home theatre and even with the drop ceiling it does make a huge difference.

Thanks for all the suggestions guys! Keep them coming!

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[Crusarius]

Homasote between joists and drywall. Maybe try to find a way to soft mount the garage door opener.

 

[STICandy]

Homasote between joists and drywall. Maybe try to find a way to soft mount the garage door opener.

Garage door opener isn't an issue. Mostly just trying to keep the garage and subaru rumble noises out of the bedroom. Trying not to let the wife know when I'm coming home [emoji23]

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[STICandy]

Does anyone have any experience with Sonopan panels? I was just looking around and stumbled across them. I read their pamphlet and this is what they're recommending :

Thinking the double drywall may be overkill.....

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[Crusarius]

The double drywall will definitely make a difference. It will also increase your fire rating for the area that is doubled.

 

[maxpower_hd]

Garage door opener isn't an issue. Mostly just trying to keep the garage and subaru rumble noises out of the bedroom. Trying not to let the wife know when I'm coming home [emoji23]

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Our bedroom is on the opposite end of the house. My wife doesn't here me come in until I go to bed....isn't she going to figure you out anyway? LOL

 

[Bluedodge]

Where abouts are ya?

Depending on your insulation needs, Owens Corning makes sound deadening insulation for situations like you are describing. The stuff doesn't add much (if any) r value. It does come in 3.75" depth. You could put in regular insulation to achieve some R value, then fill the rest of your 2x10 cavity with the accoustical "insulation".

We used it above the drywalled ceilings when I finished our basement. Quiet as quiet can be down there.

http://www2.owenscorning.com/around/sound/commercial_acoustics/acou-batts.asp

 

[STICandy]

Where abouts are ya?

Depending on your insulation needs, Owens Corning makes sound deadening insulation for situations like you are describing. The stuff doesn't add much (if any) r value. It does come in 3.75" depth. You could put in regular insulation to achieve some R value, then fill the rest of your 2x10 cavity with the accoustical "insulation".

We used it above the drywalled ceilings when I finished our basement. Quiet as quiet can be down there.

http://www2.owenscorning.com/around/sound/commercial_acoustics/acou-batts.asp

I'm in Toronto.

I have to wait and see how much space is left in the cavity after the foam has been applied. If I have that option, I'll definately be doing it.

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[M-technik-3]

Roxsol does a great job of dampening sounds, used it in my other house on the street side because it was a busy road with lots of pot holes and traffic that drives 10 mph above the speed limit. So it sounded like each crash was in the house as trucks hit the pot holes.

Wonderful state of Massatwoshits, invest no money into infrastructure until it's crumbling!! yet the tax rate is out there.

 

[KDXSR5]

I was on a build for a performing arts center at a college campus last year and they used 3 layers of drywall everywhere in that place. From what I understand, the more mass there is the more sound waves are absorbed. Or something like that.

 

[STICandy]

I was on a build for a performing arts center at a college campus last year and they used 3 layers of drywall everywhere in that place. From what I understand, the more mass there is the more sound waves are absorbed. Or something like that.

Did they use green glue between each layer?

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