Author Topic: Cement ceiling impact noise  (Read 2377 times)

drummerdimitri

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Cement ceiling impact noise
« on: February 11, 2018, 06:23:31 PM »
My upstairs neighbours are driving me crazy since with their kids running and jumping for hours on end and at very early (5-6 AM) hours on weekends!

What would be the best soundproofing solution for my needs? I very rarely hear voices or screaming but when I do it's very faint and tolerable but it's the impact noise from their feet, objects being dropped and furniture being moved that really drives me mad.

The footsteps are very bassy sounding so very low frequency I would say in the hundreds of Hz or so not sure how to measure that though.

My ceinling is made of cement and is 2.8 m heigh. I was told that the best option is to make a drywall false ceiling and stuff the gap with high density (100 kg/m3) rockwool material.

Not sure if this is the best solution for my needs and I want to block all the noise if possible.

How much lower will the new false ceiling have to be? is 40cm lower enough?

So many variables at play here and I would love to hear what the experts have to say.

Cheers!

Randy S

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Re: Cement ceiling impact noise
« Reply #1 on: February 12, 2018, 04:03:36 PM »
You must decouple the drywall from the joist system.
insulating the cavity is a must , you can add MLV barrier to help control and contain noise in the cavity followed by using clips and channel (a must do for impact)
Then I normally follow that by double 5/8" drywall with green glue in between.

feel free to reach out direct to discuss particulars and additional tips.
 
Randy S.
760-752-3030
Randy Sieg

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

drummerdimitri

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Re: Cement ceiling impact noise
« Reply #2 on: April 22, 2019, 07:37:25 PM »
Wouldn't building a room within my room be a better option as I also play loud music and drums?   

Randy S

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Re: Cement ceiling impact noise
« Reply #3 on: April 22, 2019, 07:45:07 PM »
room within a room (rwar) is always the best if you have the space for it .
depending on span you would lose 12" to 14" of ceiling height

Randy S.
760-752-3030
Randy Sieg

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

drummerdimitri

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Re: Cement ceiling impact noise
« Reply #4 on: April 24, 2019, 03:01:26 PM »
room within a room (rwar) is always the best if you have the space for it .
depending on span you would lose 12" to 14" of ceiling height

Randy S.
760-752-3030

That's fine as my ceiling is 2.85 m high.

What about each side of the room? How much space would I lose in case I want to make the most soundproof room possible?

Also, what kind of Decibel reduction should I be expecting? Will the noise disappear completely?

Thanks!

Randy S

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Re: Cement ceiling impact noise
« Reply #5 on: April 24, 2019, 04:00:40 PM »
just make sure your new frame does not touch walls and ceiling.
make sure the frame can hold 10-20 lbs sqft depending on how much reduction you want.

Best rooms can come in at 25lbs sqft.

your room value will be dictated by the weak spots like doors.

NO SUCH THING AS 100% SOUNDPROOF!
there is always a sound wave low enough to go through these walls...at some value.

Randy S.
760-752-3030
Randy Sieg

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

drummerdimitri

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Re: Cement ceiling impact noise
« Reply #6 on: May 16, 2019, 09:05:47 AM »
just make sure your new frame does not touch walls and ceiling.
make sure the frame can hold 10-20 lbs sqft depending on how much reduction you want.

Best rooms can come in at 25lbs sqft.

your room value will be dictated by the weak spots like doors.

NO SUCH THING AS 100% SOUNDPROOF!
there is always a sound wave low enough to go through these walls...at some value.

Randy S.
760-752-3030

Hi Randy,

I took some recordings of the noises and to my surprise the dominant frequency is 9 Hz according to an audio spectrum analyzer.

Not sure if any solutions exists for such low frequency muffling.

Randy S

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Re: Cement ceiling impact noise
« Reply #7 on: May 16, 2019, 04:36:20 PM »
something is not right, at 9 hz (the brown note)you can only feel it not hear it.
I am unsure if you would have much success at this. if you where creating the noise source then you could apply absorption for SPL but on the receiving side of things it will be very hard and costly.

Randy S.
760-752-3030
Randy Sieg

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