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acoustic insulation

innes

can anyone recommend a good batt-type acoustic insulation product for a residential context? this is for a project in vancouver, canada.

the purpose is to acoustically insulate between two dwellings in a building. the construction is wood frame & the insulation would be between the joists.

thx!
i.

 
Nov 18, 10 6:38 pm
tagalong

More so that the insulation, staggering the studs so that you take away the continuous path of travel

+

Mass Loaded Vinyl Noise Barrier

Nov 18, 10 6:49 pm
innes

thanks for the link - in this case it's just the floor space between two separate dwelling units.

Nov 18, 10 7:05 pm
mdler

add an extra layer of drywall to the ceiling on the lower unit

Nov 18, 10 8:15 pm
spruce

Just put un-faced batt insulation in there. Owens Corning calls their fiberglass version "sound attenuation batts" and there are others made from cotton or mineral wool - let cost and the degree of sustainability you are trying to achieve be your guide. Also in most US jurisdictions you have to follow one of the UL rated assembly details for the required fire rating - not sure if this applies in B.C.

The critical components of the acoustical floor/ceiling assembly are the two layers of drywall on resilient channel on the ceiling below and some kind of impact isolation on the floor above (carpet and pad for cheap construction, proprietary isolation system for high-end construction0. This is not the place to wing it - get details from an acoustics engineer or a reputable subcontractor - the best insulation can easily be "short circuited" by improperly connected plumbing pipes etc.

Nov 18, 10 11:45 pm
Janosh

Ditto what Spruce said. Very good advice.

Nov 19, 10 12:30 am
iheartbooks

I'm using these drywall clips on a project right now, both ceiling and wall:

http://www.kineticsnoise.com/arch/isomax/index.aspx

this company (kinetics) is a great resource for all sorts of products and information.

Nov 19, 10 8:32 am
innes

this is great, thanks everyone for the advice & recommendations. spruce, that's an excellent summary.
cheers.

Nov 19, 10 11:28 am
druf

Here is one more. If you can get them to buy cast iron plumbing waste pipe (for in the ceiling void) instead of pvc, it helps a lot with the running water sounds. Also, require than all penetrations in the floor be sealed with foam or putty.

Nov 20, 10 9:07 am
innes

thanks druf! good point.

Nov 20, 10 1:54 pm
snook_dude

Remember one thing....Sound is like water it takes the path of least resistance. So be sure to sound caulk the perimeter of the ceiling prior to taping.

Nov 20, 10 5:02 pm
Kensdy213

For wood constructions, the best use of Noise Barrier Material, it is a very effective product to stop any noise coming from the outside. This will allow you to acoustically isolate between two dwellings in a building. Even for the construction is wooden, it gives good result.

Apr 17, 18 2:42 am
krishnadevmp

You can reduce the noise by using noise barrier tarps. It is an innovative way to reduce noise.There are many products available for that but you can find quality products from: https://www.noisebarriertarp.com/ It is worked for me .

May 28, 18 10:13 am

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