Author Topic: impact noise from floor below  (Read 5545 times)

qqson

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impact noise from floor below
« on: May 29, 2010, 05:21:09 PM »
pls advise how to use a combination of MLV, greenglue, etc to make a soundblocking floor in my bedroom to achieve a high STC rating such as 80.

thickness and cost are not important. the area could be just as large as my bed.


Randy S

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Re: impact noise from floor below
« Reply #1 on: May 29, 2010, 05:59:39 PM »
Well it would need to cover the entire room. NO Partial coverage. And in order for you to reach 80 STC you would need to do your floor PLUS the ceiling below! You will NOT achieve 80 STC with just your floor unless you already have a 6"-8" concrete subfloor.
What is your current floor/ceiling assembly?

Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

qqson

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Re: impact noise from floor below
« Reply #2 on: May 30, 2010, 03:41:43 PM »
first, i could not do the ceiling below. the concrete subfloor is more than 12" and maybe 18".  my floor and ceiling below are all concrete. my neighbor below will hit the ceiling directly or indirectly strongly at night.

covering the entire floor and walls are ok. my bedroom is small. is covering my ceiling necessary?

I want to block the sound completely. is this possible? I do not mind if the floor could be raised as high as possible to block the sound.  pls kindly advise.

Randy S

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Re: impact noise from floor below
« Reply #3 on: May 31, 2010, 03:26:24 PM »
Ok so you have good mass which would give you a good STC rating for ambient sound, however without addressing the ceiling below you will not achieve a super high IIC rating. No such thing as 100% soundproof!.
For your situation I would recommend our MLV w/closed cell foam underlayment and install it beneath your carpet and padding.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

qqson

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Re: impact noise from floor below
« Reply #4 on: June 01, 2010, 01:40:22 PM »
pls advise how many layers of MLV w/closed cell foam are required? 

what is your website link for this product?

Randy S

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Re: impact noise from floor below
« Reply #5 on: June 01, 2010, 03:23:02 PM »
Here is the link to the recommended product.
http://shop3.mailordercentral.com/supersoundproofing/prodinfo.asp?number=09%2D00005CC%2D54R

1 layer mlv w/closed cell foam/ foam side down, seams taped(lead tape) and caulked perimeter.
replace your carpet pad with a 6lb.-8lb. rebond carpet pad (do not staple pad down) followed by your carpet.
Randy Sieg

Super Soundproofing Co
www.soundproofing.org
888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

qqson

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Re: impact noise from floor below
« Reply #6 on: June 02, 2010, 10:42:36 AM »
what is the IIC rating of this product? what will be the IIC rating if 2 layers are used?

The noise could be 100db. How many db could be reduced? pls advise.

johnbergstromslc

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Re: impact noise from floor below
« Reply #7 on: June 03, 2010, 02:24:15 PM »
If you have an extreme situation where you need an STC of 80, you should just move - it will be much cheaper.

I don't know who is making the 100 dB noise, you or your neighbor, but in a multifamily dwelling like that, that is pretty messed up. 

qqson

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Re: impact noise from floor below
« Reply #8 on: June 03, 2010, 03:16:08 PM »
100db is rather infrequent. normally it should be 60-70db.  the impact noise does not happen continuously, only a few times every 3-4 hours but is loud enough to wake me up.