Author Topic: egg carton myth?  (Read 6601 times)

NJguy

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egg carton myth?
« on: September 23, 2008, 09:07:52 PM »
Ok this will actually be 2 questions in 1 (Don't want to waste space on the forums)

First will be the subject topic. Now I have been doing some research on the net about using egg cartons to soundproof. I seen on more then 1 site that this is a myth. reason being is the holes and space, in some cases I read that it makes it worse then better. Now heres my first question. Since density plays a big key in all this, what if I was to fill the egg cartons with wet newspaper and let them dry. Wouldn't this give the egg carton more density and actually make the myth work?

On to the 2nd question, which is the real reason I am asking the first question.

I am part of a motorcycle club. We currently rent a HUGE garage (you could prob fit 4 to 5 cars, front end to rear end, in it). We have been  having live bands play there, but the problem is that it disturbs the neighbors, to the point where the cops have been called several times. Since then we have been cutting the bands off at 10pm, but it kinda kills the rest of the night for us and the people that have come to see the bands. So we have decided to work on sound proofing the place in hopes of having the bands play later.

The walls are concrete (maybe a foot thick), the ceiling is exposed beams (also maybe a foot thick) and there is only 2 windows in the whole place, both facing our parking lot (then a graveyard behind that). The ceiling is maybe about 10 feet from the ground up.

As you can tell I haven't measured anything yet, so these are just guesses. Our idea at first was to just cover everything in either carpet, drop ceiling panels and egg cartons (We're not looking to spend a lot of money on this project since we rent the space).

After some research I pretty much discovered that these might not do any real good. But also during my research i have come up with a new plan. I figured I would ask you all before I presented the idea to the rest of the guys.

First (If we can afford it) I would like to put up some lead sheets. I seen some of the prices and it seems that this would be the bulk of the expense. Next a layer of overlapping moving blankets, Next some drop ceiling panels over that. On top of these panels would be the egg cartons with the wet paper and/or Polyurethane Foam (and/or Polyethylene Foam).

before the project would be started all cracks/holes would be filled in and covered. The only thing I'm not 100% sure on with this plan is what product to use as an adhesive for everything. 

So what do you think? Any help/tips/suggestions would be greatly appreciated.

Thanks in advance.

Randy S

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Re: egg carton myth?
« Reply #1 on: September 23, 2008, 10:33:31 PM »
First off the egg carton at best will give you 16 NRC. at Best!!!NRC refers to sound absorption only so no soundproofing properties there.
You have to really soundproof the ceiling if you want a decent reduction. The level of soundproofing you need will depend on how close the neighbors are and what is the DB level leaving the Garage.
You should Plug the windows and make sure the seals around the doors are airtight these are cheap fixes. Here's links for that.
http://www.soundproofing.org/infopages/windowplug.htm
http://www.soundproofing.org/infopages/soundproofing_doors.htm

Using MLV will be far cheaper than Lead sheeting, you should close up the entire ceiling 2 layers MLV / insulation / double drywall...that would be the cheapest with results  or put up 6-8 layers of 5/8 drywall with lots of caulk...


Randy Sieg

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

Randy S

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Re: egg carton myth?
« Reply #2 on: September 23, 2008, 10:40:16 PM »
one more thing the garage doors need to be closed up and sealed... you will need mass there also to be treated same as the ceiling.
Randy Sieg

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

kifa123

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Re: egg carton myth?
« Reply #3 on: April 30, 2009, 04:22:33 PM »
First (If we can afford it) I would like to put up some lead sheets. I seen some of the prices and it seems that this would be the bulk of the expense. Next a layer of overlapping moving blankets, Next some drop ceiling panels over that. On top of these panels would be the egg cartons with the wet paper and/or Polyurethane Foam (and/or Polyethylene Foam).

Randy S

  • Senior Soundproofing Technical Specialist
  • Global Moderator
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    • Super Soundproofing Co
Re: egg carton myth?
« Reply #4 on: April 30, 2009, 06:42:34 PM »
Well if you budget for using lead sheeting ("most expensive") , than you could afford to purchase a full MLV/green glue floated wall system and receive better overall results. There would be a tolerence difference but you could at least afford to decouple the wall/ceiling, insuring better results.
Randy Sieg

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

 

anything