Thread: Acoustic Dampening material

Originally Posted by Chairboy

Search for Peel-n-seal. It's a popular dynamat substitute, 1/50th the cost and just as effective, from what I've read. You buy it at Home Depot, and lots of folks here have had great success with it.

it's called 'frost king' at home depot.

most of the spray on stuff is crap but they have some new stuff that is supposed to be better then any of the stick on sheets out there. I'll try to find out the name of it

Edead on ebay, 100 square feet is only 100 dollars. Its very comparable to dynomat in everything I've heard, but if youre lookin for the best use dynomat, its what I put in my explorer.

you may also want to look into B-Quiet Brown Bread.

Use peal-n-seal then use liquid nails to apply Hair Pile over that. Cheap as hell and quiet as all get out. Made a HUGE diference in my Matrix. Everyone that gets in my car are amazed at how quiet it is and how solid the doors sound and feel.

Originally Posted by Defiler

Use peal-n-seal then use liquid nails to apply Hair Pile over that. Cheap as hell and quiet as all get out. Made a HUGE diference in my Matrix. Everyone that gets in my car are amazed at how quiet it is and how solid the doors sound and feel.

HAHA liquid nails... Reminds me of that Pimp-My-Ride show that had it holding the car together.

What happens if you want to get it off to do a repair or something?

Presumably, you're only applying this to the actual bare metal beneath your carpet, the frame, where there are no moving parts. You pull up the carpet and put this on the metal floor. So, 'Not Applicable' is the most diplomatic response to your inquiry.

Question, what is 'hair pile'? Do I need to borrow a cat to produce this?

Originally Posted by WebDog

HAHA liquid nails... Reminds me of that Pimp-My-Ride show that had it holding the car together.

What happens if you want to get it off to do a repair or something?

I don't wory about it as there is nothing to repair where it goes. And laugh all you want about liquid nails ...If you don't want it coming off it's what you use. That hair pile is going nowhere.

Originally Posted by Chairboy

Question, what is 'hair pile'? Do I need to borrow a cat to produce this?

Hair pile is a fiber type material used mostly under carpet to deaden sound in movie theaters and such. I guess homes as well. But I called a carpet wholesaler in my area and they sold me a 4' x 40' or 50' roll for $50. even after doing everything including the roof I have a ton left over. It made more of a difference than two layers of peal-n-seal.

Ah! I am very interested in this subject, as I am noticing road noise more often nowadays. Can you estimate how thick your insulation you've applied to the floor is? My understanding, btw, is that dynamat/brownbread/peal-n-seal is almost (but not completely) ineffective at dampening road noise, so your hair pile method is very intriguing.

well, the peal-n-seal is 40mils. The hair pile I have is about .5" thick but it can be compressed a little.

On the doors I ripped all the cheap plastic film off the door behind the door panel and thew it away. Then used two layers of P-N-S on the outside metal, and three behind where the speaker is, with one layer of hair pile on the entire door. Then I used A/C duct tape to close all the holes on the door then did a layer of P-N-S over that and then did a layer of H.P. on the inside of the door panel where it would fit. The doors have a nice solid feel and gives a nice "thoomp" when you close them. Did the same to the hatch.

For the interrior I removed all of it and did two layers on the outside metal with one of H.P. where I could. Two layers on the floor, w/ three in real thin metal areas (remember this is a Toyota Matrix. ) with a single layer of H.P. over that and a single layer of H.M. on the plastic pannels. Doing that made them almost too tight of a fit but it's solid now.

Also, if you have a buzzy engine, like I do, you might want to beef up the firewall a little more to keep that noise out as well.

EDIT: Man, I need to read my stuff before posting...