Soundproofing

[WiBad]

Trying to limit noise transmission through a house/garage shared wall.

Have seen acoustical matting that is placed between two sheets of drywall but it is very expensive.

Thinking about using floor underlayment as a substitute for acoustical matting.

Any thoughts of how this would work?

Any other suggestions on how to limit sound transmission between garage and house?

 

[e-tek]

Real sound-limiting is having a dead-space between two walls, so if you're building, you might consider that. As well, there's a type of insulation that's not very expensive that is for sound deadening between floors and walls. Maybe that?

 

[Torque1st]

Double offset stud walls. Two layers of sheetrock with RTV beads over the studs. Fiberglass insulation in the wall cavity.

 

[egdede]

Double offset stud walls. Two layers of sheetrock with RTV beads over the studs. Fiberglass insulation in the wall cavity.

If you frame 2 walls w/separate sills and top-plates, and the fiberglass is meticulously applied to create an uninterrupted sheet between the studs, single layers of 5/8 will yield impressive results. Double layers applied as per above would be best, but maybe not necessary especially if on a slab).

 

[Vinko]

http://www.soundproofing.org/


I read this site a few years ago. It looks like it's changed a lot since then.

But I found some good info and ideas on it.

Also, they mentioned a book written a few decades ago on sound proofing. Maybe it had something to do with EPA studies. But I got it from the library and found it to be written in layman's terms, which I was grateful for.

 

[willymakeit]

Go to your local libary and see if they have any Sweets catalogs. There will be wall diagrams with STC ratings. Might try US Gypsum on line also. They have alot of the same info.

 

[Wingnut65]

Go to your local libary and see if they have any Sweets catalogs. There will be wall diagrams with STC ratings. Might try US Gypsum on line also. They have alot of the same info.

Here is an on-line brochure from US Gypsum that has some of the wall diagrams willymakeit is referring to: http://literature.usg.com/pdf/SA924.pdf. The higher the STC Rating, the better.

 

[m.james]

In addition to whatever else you add double paned glass on your welcome on that side of the house can help tremendously.

 

[Ripped]

Before my current role as a PM, I've done a lot of accoustical contracting.

Usually to do sound-reduction correctly, it's expensive.

1st you need to know what the frequency of sound is.

For example, when sound proofing for a printing press, in a side by side warehouse, we had to deal with 2 types of sound.
1. when the press started, the ventilation fans started, is sounded like a jet engine.
So the high frequency sound is dealt with by making a sound absorbing wall on rubber isolators. The wall has to vibrate at a different frequency than the adjacent wall, so we make it "weigh" different. In this case heavier.

Next when the printing press fires up, it sounds like 2 kenworths going up a hill. This is low frequency direct transmission. This involves isolating the machinery, everywhere it is directly connected. Rubber isolators, rubber/vinyl expansion joints, even saw-cutting the concrete around the machine, or across the warehouse floor.

Typically, in a garage it's low frequency sounds. Double walls are not going to do much, unless you mount compressors etc, on rubber isolators, and flex couplings between the compressor and wall fittings. LF sounds are most annoying and cheapest to fix. Start there.

 

[Ovidiu]

I am looking into soundproofing a 'noisy' guest bath, and I had found this product called quietrock, which is like a better sound absorbing drywall. I will probably give it a shot, I'd like to know if anyone has used it before as well...