popeyesteve Posted November 7, 2014 Report Share Posted November 7, 2014 I have used Dynamat material to line all of the floors and behind-seat storage in my El Camino with good success in reducing road and especially exhaust noise. This is all sheet steel structure which has a tendency to drum or resonate, transferring noise, especially exhaust of into the interior. I have a supply of Dynamat which I can use in my Avanti floors before I install my new carpet set, but I don't have any experience with it on fiberglass. Fiberglass may be a little more transparent to noise transmission, but I don't think it vibrates or resonates with the same intensity as steel which the Dynamat is primarily designed to dampen. So, has anyone out there lined their entire floor (and maybe even the trunk) with Dynamat before and if so, are the results as far as sound deadening worth the cost and effort? Steve Link to comment Share on other sites More sharing options...
Avanti83 Posted November 7, 2014 Report Share Posted November 7, 2014 Simply put - Yes! Mine is done with Fat Mat but it really helps. It doesn't help much with exhaust noise as that's by design. Works well with heat also. Link to comment Share on other sites More sharing options...
plwindish Posted November 9, 2014 Report Share Posted November 9, 2014 I did my 76 with Fat Mat a couple of years ago. It does help reduce the road noise as well as insulating some heat coming back from the engine compartment. Link to comment Share on other sites More sharing options...
Silverplate Posted November 9, 2014 Report Share Posted November 9, 2014 I did my 64 Avanti with Dynamat last year before carpet and very pleased with results. Much quieter and the tunnel console area not nearly as warm...Mike Link to comment Share on other sites More sharing options...
Devildog Posted November 10, 2014 Report Share Posted November 10, 2014 I used exhaust wrap to reduce the heat in the cockpit on my Avanti. http://www.jegs.com/i/JEGS+Performance+Products/555/32075/10002/-1 Later I used insulation under the new carpet to lower noise, but the exhaust wrap alone significantly reduced the heat. With the wrap and insulation both, my inside temperatures are quite nice even in our 100 degree temps and near 100% Houston humidity, before A/C was not effective. Joe Link to comment Share on other sites More sharing options...
BillyBob Posted March 2, 2015 Report Share Posted March 2, 2015 Looking to reduce heat in my '63. Are pre-cut kits available? Link to comment Share on other sites More sharing options...
brad Posted March 3, 2015 Report Share Posted March 3, 2015 I used Lizard Skin spray on heat barrier, over the sound deadener. Both inside and under the floors. I then used a dynamat type of foil backed sound deadener. Then over that I installed an extremely dense closed cell foam rubber, then the carpet. Needless to say the car was like a bank vault. Link to comment Share on other sites More sharing options...
CaffeineRacer Posted March 3, 2015 Report Share Posted March 3, 2015 I used Lizard Skin spray on heat barrier, over the sound deadener. Both inside and under the floors. I then used a dynamat type of foil backed sound deadener. Then over that I installed an extremely dense closed cell foam rubber, then the carpet. Needless to say the car was like a bank vault. How well does that stuff hold up underneath the car (I assume that's what you meant by "under the floors")? Is it fairly durable? Link to comment Share on other sites More sharing options...
brad Posted March 3, 2015 Report Share Posted March 3, 2015 (edited) The heat barrier is like a ceramic slurry, and is a bit fragile. It will scrape and dent, but only in direct contact with something,but you won't rub it off. In other words, it does stay put, but It isn't tough like a bed liner urethane material. The dynamat does not reduce sound penetration just resonance for the most part. That is what the dense foam is for. Edited March 3, 2015 by brad Link to comment Share on other sites More sharing options...
PackardV8 Posted March 4, 2015 Report Share Posted March 4, 2015 dynamat type of foil backed sound deadener. Then over that I installed an extremely dense closed cell foam rubber, then the carpet. Wow! How thick was the total? Where did you source the foam? jack vines Link to comment Share on other sites More sharing options...
brad Posted March 4, 2015 Report Share Posted March 4, 2015 The Lizard skin is about 3O-4O mils thick, and the foam was 1/2" Dynamat is probably less than 1/16" so about that total. The foam is called anti-fatigue mat, and was sold as a carpet underlayment...But, I haven't seen it for a year or so at the box stores. Link to comment Share on other sites More sharing options...
Avanti7 Posted March 10, 2015 Report Share Posted March 10, 2015 Steve I'm about to do the same thing in my "70". I haven't decided on a product to help with the heat yet. Where did you get your carpet? I Is it a precut kit and did the pieces for the lower door panels come with it? thanks, Jim Link to comment Share on other sites More sharing options...
popeyesteve Posted March 11, 2015 Author Report Share Posted March 11, 2015 Jim, I got my carpet kit from Automotive Interiors & Accessories, Inc. (automotiveinteriors.com). I bought their interior and trunk kit together. They are cut, trimmed and sewn pieces and there are a LOT of them (including those door panel lowers), like the original factory installation. This is not a drop-in, molded carpet set like in a "modern" car. I am waiting for some warm weather before I start this project, my shop is not heated. I think that the Dynamat and carpets would also like some heat to make them more pliable during installation. Good luck, Steve Link to comment Share on other sites More sharing options...
Avanti7 Posted March 11, 2015 Report Share Posted March 11, 2015 Thanks Steve. I've talk to Studebaker Int. and Auto-Mat, Inc. in Hicksville, NY about there kits and there are 14 pieces in there kits. Jon Meyer told me he gets his kits from Auto-Mat. I will give Automotive Interiors & Accessories a call and price their kits. Link to comment Share on other sites More sharing options...
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