Where to get sound deadening material

[Kurk818]

Any recommendations on sound deadening?

Dynomat? Where to buy thats most cost effective.

[wallace18]

Eastwood sells thermocoustic mat. works well and when on sale very good price IMO.

[Hindsight]

This is another good option: http://store.secondskinaudio.com/damplifier/

They have some "B-stock" usually available that is very cheap too.

[Kurk818]

Eastwood sells thermocoustic mat. works well and when on sale very good price IMO.

Im reading lots of negative reviews of it "leaking" at temps above 70*F. Have you had this issue? Is it a bad batch they received?

[Kalstar]

Im reading lots of negative reviews of it "leaking" at temps above 70*F. Have you had this issue? Is it a bad batch they received?

Have you considered a spray/roll on deadner? I have used GTMatt on both of my Factory Five cars.

[Kurk818]

GTmat looks to be even cheaper than the Eastwood Thermocoustic. Are there any downsides to it? Application or otherwise?

[Kalstar]

I applied it to my GTM myself and Wallace applied it to my 818. It was very easy to use and a gallion was more then enough for the GTM. It made a huge difference when it came to taking the tin sound out of the panels, they have many products but I only used the roll on and I am very happy with the results.

[68GT500MAN]

I have used a product called Fat-Mat in three builds with success. It is similar to DynaMat and the others at about 1/2 the price. I live and drive in 100 degree plus heat in the summer and never had a problem with "melting".
Doug

[billjr212]

I'm going to throw out the ultra-basic option. I used this simply to take out the tin sound from some of the panels and provide a bit of insulation from the footbox heat in the roadster. This stuck to the aluminum and I put the carpet right on top of it. If you are looking for anything more significant, there are some great suggestions above.

http://www.homedepot.com/p/Frost-King-E-O-12-in-x-15-ft-Self-Stick-Foam-Foil-Duct-Insulation-FV516/100028603?N=5yc1vZc5hi

[wleehendrick]

I've sprayed at least one side of my Al panels with 3M rubberized undercoat. That alone helps to deaden the metallic resonance, adds almost no weight, and give a decent matte black finish (if sprayed properly). I'm adding EZCool for additional insulation in certain areas as well.

[RM1SepEx]

I'm using fatmat, just cut to size, peel and stick http://www.fatmat.com/shop/

[skullandbones]

Summit has a version of "Dynamat". It's called Hushmat. I like it about as much as the Dynamat. They are compare very well on things such as ease of handling and installation. It is cheaper than Dynamat.

WEK.

[rtz]

If you want something lightweight and different; have a look at this stuff. I've also seen rolls for sale on ebay:

http://www.impact3d.com/3M_Thinsulate_SM600L_specs.jpg

Some discussion about it and someone selling it:

http://www.promasterforum.com/forum/showthread.php?t=36369