Author Topic: Idea for soundproofing a floor  (Read 3728 times)

whatismisophonia

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Idea for soundproofing a floor
« on: January 29, 2012, 08:24:57 AM »
Floors are a soundproofing issue just like walls and ceilings, but also have the problem with being WALKED on.  If i were to soundproof a floor, particulary if it was going to be hard wood or laminate, this would be my idea for the topside; tell me whats wrong with it (im not actually doing this, it's just hypathetical):  Let's say its an average 2x6 floor with 1/2 inch plyboard or more.  First, seal all the edges airtight; then add 2 or more layers of carpet underlay; add 1 or 2 layers of roll roofing or MLV; then a layer of cheap 1/4 inch osb, green glue, then another 1/4 layer of osb; on top if which would go whatever finishing material. 

Basicly, you'd have a 1 inch osb rough floor with damping compound built in and on its bottom side, which would be floating on top of a cusion.

I love posting on this site for some reason; I am so f*ing into soundproofing.

whatismisophonia

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Re: Idea for soundproofing a floor
« Reply #1 on: January 29, 2012, 09:33:21 AM »
scratch that; 1/2 inch osb, not 1 inch.  It should be enough strength while still allowing for flexability.  The osb would basicly be floated, but still solid by virtue of the fact that the joints are overlaped, staggard, and glued.  A hardwood floor would also be glued, probably with construction adhesive, to the osb; any staples in the tongues would have to be no more than an inch, depending on the thickness of the wood.  A thin floated laminate would present fewer problems.

Randy S

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Re: Idea for soundproofing a floor
« Reply #2 on: January 30, 2012, 06:12:08 PM »
well, i like your enthusiasm with soundproofing however your theory is not going to deliver quality results.
The principle that must be applied for impact noise is to Decouple from the structure.
The best impact systems are a 95%-99% break of the surface connection when using hard final surfaces.
When you do full coverage you are essentially just putting your hand on a speaker while its playing....its still playing just not the same way...we refer to this as a band-aid approach.

 
Randy Sieg

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888-942-7723
Ph. 760-752-3030
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whatismisophonia

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Re: Idea for soundproofing a floor
« Reply #3 on: January 31, 2012, 07:18:09 AM »
So basicly, it would have to be a freakishly awsome mat, or there should just be an air gap; but, then again, wouldnt that create a tripple leaf?  Hard floor, airspace, sub-floor, airspace, ceiling...  or do the airspaces have to be about equal in depth for that to happen?  I suppose the bottom air gap would be more than enough to make up for it, and the real issue is the vibration, which would be improved greatly.  So then, the floating osb floor would be better if it were resting on thin strips of thick padding, or even a gridwork of small individual pads, rather than full coverage padding (which would cost less anyway) and the sub-floor should have a thin absorbant material covering its top and bottom side to reduce resonance.  Though, if people would make it a habbit of using 1 foot I-joists, the stiffness and excellent airgap should help alot.

p.s. sorry about all the posting; sometimes i just sort of ADHD out if im up late.  Anyway, i just have alot of random questions that pop into my mind on the subject, though i only really started studying it out of necessity to put my own bandaid over my noisey affliction.  Truthfully, i need medication for the noise dissorder, although the world could stand to be a little quieter. 

whatismisophonia

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Re: Idea for soundproofing a floor
« Reply #4 on: January 31, 2012, 07:21:33 AM »
the software of this forum seems to have some trouble recognising certain combinations of letters

Randy S

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Re: Idea for soundproofing a floor
« Reply #5 on: January 31, 2012, 05:14:20 PM »
Yes you would need absorption material in the air gap to prevent the resonance chamber.

why dont you give me a call and lets talk theory. You seem to have knowledge and a passion for sound control.

Randy S.
760-752-3030 ext 104
Randy Sieg

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

whatismisophonia

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Re: Idea for soundproofing a floor
« Reply #6 on: February 01, 2012, 12:04:38 AM »
Im sorry, im just not much of a verbal learner; this(and misophonia to a huge degree) is why i had so much trouble in school; average communication is too fast for me to process info.  Learning involves receiving, then processing stimuli. I regard myself as having good conceptual skills, but my learning disability makes receiving difficult.  Were it not for books and youtube(you can stop an re-listen to what was said) id be lost.  Id like to buy a text book on noise abatement, but those thick bastards are just so expensive.  It's not helpfull that I'm a horribly slow reader + the dylexia, but it's the best I've got.  Life really kicked me in the teeth at every angle.