Anyone use "hushmat"

You must be watching Spike TV today.

 

Why would you want soundproofing in a Ferrari?
Morris

 

I actually did use a little bit of the Dynamat material on my 77 308gtb.

I did the door panels up to the point where they curved over the lip on the door frame. It made the doors sound more substantial when closing or opening and the seemed to mute a bit of the road noise. Note I didn't say exhaust note as my car had a tubi and it made some great noise that I wanted to hear.

I was planning on using more of the material on the floor for heat insulation and other places but sold the car before I got around to it. All in all, if it's winter or you have the door panels off for another reason I would say why not. In other words you will need to appreciate it requires as others won't ever notice.

 

I used the Dynamat product on a Corvette after I installed an exhaust system that was *way* too loud.

It works OK, but the black sticky backing is messy...and when the temps heat up it starts slipping where you've got it installed vertically (e.g. on the sides of door panels)...and as the Dynamat slips it leaves a black sticky trail (which might not bother you if it is inside a door until you go to work on a window motor or wiring later on).



If you are on a budget, there are Dynamat clone products (can't really get any worse, so why pay more?!) sold on eBay for one tenth the cost of retail Dynamat...you just have to purchase large quantities (you'll still pay out less than half, even though you get much more material).

 

I used DynaPlate (the lighter version of DynaMat) on my prior Mondial-T cabriolet. While the engine sounds, exhaust, etc were great with the roof down, there was a bit of a droning sound when the roof was up. I wanted to tune this out without going too far. I applied it behind the rear seats (behind the carpet) and especially at the access panel. I was very happy with the results. I also used it on the doors, covering the entire area of the vapor barrier, to tune out some resonance from the improved door speakers that I had previously installed.

 

I haven't pulled the trigger yet, but I'd like to substantially eliminate road noise & my research indicated Dyna products the best choice. Picking the product isn't easy as they have many offerings, which essentially vary in thickness. I figured the project would come in between $200 and $400.

I liked the DynaPad which is about 1 pound per square foot and a 12 sq ft package is just under $100. Fine print says to be effective, one must thoroughly encapsulate the drivers area, not just dab a little here and there. For ultimate confusion check the manufacture's web site http://www.dynamat.com/technical_technical.html and then find gobs on eBay.

I haven't found anyone who can quantify the improvement. Most say, 'yes it helps but still comes short of their expectations'. If that's because of an inadequate installation...donno.

ps- I just noticed the corvette installation guide...this should be required reading if you get serious.
http://dynamat.com/download/vss/2657_2000_Chevy_Corvette.pdf
Note the material cost is $1300 for 12 db road noise improvement. Whoa

 

sorry, Im a long time lurker but please dont put tin foil all over your beautiful car. theres nothing worse than seeing foil backed sticky rubber destroy the inner panel of a car. Please look at www.cascadeaudio.com and check out there products and pics. This is the only product we use in my shop and makes for a beautiful installation. It helps for road noise and the audio of the vehicle, it actually creates a enclosure out of the door and gives much better response for the driver(speaker). I understand you may not be after the audio side but this product is excellent for sound dampening. If you have any questions, please ask, I have a audio shop in tampa and can help if needed.
Pete

 

This is worth reading http://www.sounddeadenershowdown.com/

You'll want to use a butyl product over the asphalt used by most vendors. This vendor has some forums http://www.secondskinaudio.com/ There is a "how to" here http://www.raamaudio.com/cgi-bin/index.cgi

 

Pete, good to have an expert here. What 'tin foil' are you referring to? And where does one 'see' anything used? I was under the impression the material was beneath or behind. Lastly, what product to you recommend and what is it's cost per sq ft? I couldn't find any sound suppression on the fine Cascade site.

 

I used every product dynamat makes on my GTS thinking I'd like to be able to hear NPR or the way to work in the morning with setting the volume to 11. It really did very little good....I hadn't really given it enough thought it turned out. Unless the top is on and the window up, which is never me, the stuff can't possibly help. The next time I have the interior apart it will all be coming back out and it looks like that will make quite a mess to clean up

 

Probably some of the stuff I used. Dynamat makes a foil coated rubberish stuff, another version with extra rubber and a layer of lead and foam you need spray glue to install. I put the lead stuff on the rear fire wall, the foil stuff everywhere else and the foam over everything and I don't think the car was more than 1 db quieter under normal conditions (top off), it might be quieter with the top on and windows up but I really don't have a good reference point so I can say.