Author Topic: Mass Load Vinyl vs Vinyl Flooring  (Read 6331 times)

condo

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Mass Load Vinyl vs Vinyl Flooring
« on: November 19, 2011, 03:53:13 PM »
Was wondering if vinyl flooring would be a good cheaper alternative to MLV.

If it's just the mass it might make sense or are the properties in the MLV that are in play?


Randy S

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #1 on: November 19, 2011, 04:02:51 PM »
Sorry they are not even close.... MLV is a 50% barium load with a density of 1.97 so it would take you so many layers of flooring vinyl to equal its STC it would be ridiculous..1/8" MLV is equal to roughly 4 layers of drywall if use in the correct format. 

Mass is the main value based on STC achieved for higher frequencies, but as you go down in frequency there is more involved than just the mass law.
And the order of materials in the assembly will dictate the value of your system...
Randy Sieg

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condo

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #2 on: November 23, 2011, 08:22:15 PM »
Found this at a web site:

"It (MLV) should never be sandwiched between layers of drywall unless you can provide a dead air space where in the MLV can resonate or move with the sound waves. This can be accomplished with the use 1" furring channels that will allow the MLV to resonate between 2 layers of drywall."

My thought is it (the furring strip) would create a triple leaf effect if used in my staggered wall application, I am I wrong and is it ok to sandwich as was suggested in my other thread?

johnbergstromslc

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #3 on: November 23, 2011, 10:46:16 PM »
Found this at a web site:

"It (MLV) should never be sandwiched between layers of drywall unless you can provide a dead air space where in the MLV can resonate or move with the sound waves. This can be accomplished with the use 1" furring channels that will allow the MLV to resonate between 2 layers of drywall."




If you sandwich MLV between drywall, it will simply add more mass to the system - it has about the same density as 1/2" drywall, so it would be like installing 3 layers vs 2.  It saves space, but that's an expensive way to add mass; drywall is only 8-10 bucks per sheet, MLV $50+

MLV is intended to hang as a limp curtain to dissipate airborne sound.  Green glue is the stuff designed to go between drywall sheets.

Randy S

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #4 on: November 23, 2011, 11:28:39 PM »
John is correct....

MLV value in a sandwich is about 13 STC points... and is basically a mass value.

But

In a limpid installation you gain full potential of MLV STC 26 and achieve better reduction when dealing with SPL.

MlV always to the stud/joint then decoupler or spacer when dealing with high DB or LF / SPL...the only time the sandwich is a viable application is when dealing with 1k and up.
Randy Sieg

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888-942-7723
Ph. 760-752-3030
Fax.760-752-3040

condo

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #5 on: November 24, 2011, 12:57:33 AM »
So better to remove the drywall hang the MLV then furring strip then Drywall.

But wouldn't that still be a triple leaf though?

Randy S

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #6 on: November 25, 2011, 01:44:42 AM »
No, it will not react that way because the MLV is limpid not rigid...

Also a clip and channel system will work better then just channel...if your just going to use resilient channel use isolation padding tape with it.

clips-
http://shop3.mailordercentral.com/supersoundproofing/prodinfo.asp?number=09-IS

tape-
http://shop3.mailordercentral.com/supersoundproofing/prodinfo.asp?number=09-42745-143-1
Randy Sieg

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

condo

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #7 on: November 26, 2011, 11:32:02 PM »
Ok now I understand.

Are there some diagrams of these type applications (and other additional options) I could take a look at?


Randy S

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Re: Mass Load Vinyl vs Vinyl Flooring
« Reply #8 on: November 28, 2011, 03:08:48 AM »
send me an email and I will send you some info and photos of a system. On Monday 11-28 when Im in the office.

randy@soundproofing.org


Randy Sieg

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