Thread: Looking for sound deadening advise

Originally Posted by durwood

Ya I think his username is rudy or rudeboy in some other forums as well.

Just don't use peel-n-seal or cheap solutions

lmao, poor guy gets to be harrased now, bad enough his car smells like crap

that wasn't my intention, but we do learn best from our or others mistakes no? One of my friends from a while back was a general contractor and decided to do his whole truck in peel n seal. I have no idea how it looks now since I haven't seen him in years but I thought it was a good idea at first. Then I did some research and found it wasn't.

Here I am popping in I haven't seen any Hushmat firsthand, but my understanding is that is very close to Damplifier in quality. Maybe get your shop to do the job then send me some scraps to test?

Seriously though, the most important thing is that you not use asphalt. If you have any doubt, there are two simple tests you can do. Either will give you what you need. Test 1: drop a small piece in a few ounces of mineral spirits or turpentine. Wait 15 or 20 minutes. If the liquid turns brown, it is asphalt; black and it is butyl. An easier test is to try and light a piece on fire with a butane lighter. Butyl will ignite, asphalt won't. Only takes a few seconds to light, but watch out, it does that freaky flaming drops thing light plastic does.

Using a vibration damper like Damplifier or Hushmat will do several things for you. It will improve the quality of the music you hear by reducing resonance in the sheet metal and it will reduce transmission of noise into the passenger compartment. As has been mentioned, to maximize both improvements, you really want to add a layer of closed cell foam to the project. The two approaches combined are much more effective than either one alone.

so closed cell... should you do the entire car in that as well? just go over all the sound deadening? or just certain parts

Also, what about the trunk, do that as well?

Originally Posted by Dennis5587

so closed cell... should you do the entire car in that as well? just go over all the sound deadening? or just certain parts

Also, what about the trunk, do that as well?

I like to do it all. I even stuff it into gaps in the dash, use it to make gaskets for trim panels, pretty much where ever it will fit.

so what closed cell do you suggest?

Originally Posted by Dennis5587

so what closed cell do you suggest?

Ensolite MLC, Neoprene High Quality or one of the vinyl-nitriles sold for sound deadening. Just buy it from a reputable source - some people have had weird odor problems with eBay and other unknown sellers.

raamaudio has ensolite and it is very reasonably priced. I looked at some other options but pricing was all the same. Rick is a great guy to deal with.

Originally Posted by Rudy

I like to do it all. I even stuff it into gaps in the dash, use it to make gaskets for trim panels, pretty much where ever it will fit.

I thought the CCF was only used in doors/behind speakers. Is that not really the case?

-dave