Soundproofing

[69sprite]

Since I decided earlier today to tell the guys I was 'slave' consulting for that I was going to go back into 'retirement', I should have some time to pickup and do some of the work I delayed on my car.

I am going to pull the interior back out of it and re-do the sound proofing under the carpet. The stuff I used was 'supposed' to be good, but apparently it doesn't handle the Texas heat too well. Not only has the carpet separated from the foil backing, but the fol backing has separated from the fabric stuff that was the insulation.

I am thinking of using Eastwood's version of Dynamat in the 12"x12" squares.

Has anyone used this, or Dynamat on their Spridget before? If so, how has it worked out and how much did it take to do the interior?

Thanks
Larry

 

[David_Doan]

I used a much cheaper version of Dynamat called Peel & Seal. At Lowes it is about $16 for a 25ft roll that's 6" wide (about $1.25 a square foot).

I think I found it on a hot rod site. I did everything but the trunk area with 3 rolls, 4 rolls would do the whole car. I glued my carpet on top of the Peel & Seal. The car seems quieter but its hard to say for sure. You immediately notice after installation that if you knock on the car it goes "thud" instead of "bong"

There are some progress pics in my blog below.

 

[Jimflorida]

I've used Koolmat, which is a bit expensive, but made to suppress heat. It's really good stuff. Jim

 

[TexasSprite]

Try Damplifier from Secondskin.com I lined the interior of my 59BE with it after POR-15 application. Right away, I noticed the BE was much quieter and did not sound nearly as "tinny" as before application. The car feels much more solid. Damplifier is less expensive than Dynamat but more that Peel and Seal. I do have some Peel and Seal from Home Depot that I was thinking of using in my old truck, but it does smell of asphalt while the Secondskin product is odor free. Secondskin is good to 500 degrees, which is just about right for Dallas in August. Since the Peel and Seal is pretty inexpensive and my old Suburban is has acres of interior to cover, I was going to experiment with the Peel and Seal. My only concern is it melting during the summer and sliding off the door skins or making the interior smell like fresh asphalt pavement. In researching the issue on the Web, I find both good and bad reports from folks that have used the product. I plan to run a little experiment using a heat gun and an infrared thermometer to see just what happens when it gets up to about 140-150 degrees, which is what the interior could get to on a hot day.

In addition to the Damplifier layer, I put a layer of foil backed carpet padding under the carpet sections that cover the footwells. The doors are lined with Damplifier on top of which I glued some ribbed vinyl tread grip material from my local mega hardware store (Elliots). It is a dead ringer for the original ribbed liner. I also put a layer of 1/4 inch foil backed bubble wrap insulation over the transmission hump,which was then covered with carpet (Moss Motors kit). You could probably cut up a cheap windshield shade from Walmart to do the same. Just like keeping warm in the winter by adding layers. Works in reverse as well.

Much cooler!

 

[jlaird]

Wish I had done that.

 

[BillW103]

I used this product and 3M spray. About $75 at Home Depot.