Want to replace carpet padding with ... ?

Problem: car had a musty odor because the factory carpet rubber
backing between the carpet and Jute padding cracked and let water
migrate into the Jute padding. The pulled Jute padding was like placing a
saturated
piece of padding into a Zip-Lock bag and permanently sealing it. The odor
was REALLY bad.

My only solution was to completely remove the entire carpet from the car.
Not a fun job, so I want to do it right when I replace it into the car.

My goal is to re-seal the rubber cracks, then replace the padding with
something that is heat resistant, sound proofing, and will not absorb and
retain water as the Jute does. Something synthetic that will not mold, etc.

I would install a new carpet, but they all have the Jute padding - so I
would
just be back where I am now - in a short time. I need to do a custom job.
My old carpet is in great shape, looks new - it only need new padding.

Here is the plan: find a material with a foil backing, made from 100%
synthetic
material, that is suitable for the high heat floor pan. Something that will
feel
like padding, reflect heat, reflect sound, and not deteriorate with heat.

I have no problem cutting and gluing multiple layers of the selected
material.

QUESTION: what product do I use, and where do I go to get it?

THANKS,
Gene

Here are some links I found:

Thermal/ acoustic insulation:
http://www.stockinteriors.com/HeatSound.asp?Itemid=4783

This one looks good on paper.
Claims to be mold and mildew proof ?
http://www.automotiveinteriors.com/Install_HeatShield.htm
Approximately 3/8" thick
Weight (approximate) 3.3-oz/sq.ft.
Acoustical NCR of .63
Tear strength of 125 lbs.
Mold and mildew proof
Needle punched synthetic fiber
Fire Retardant
Reflects 97% of infrared energy
Insulation "R" factor of 18.3

This one looks interesting:
Made from coarse denier non-woven polyester fiber.
http://cgi.ebay.com/ebaymotors/Auto...t-Padding_W0QQitemZ290121227973QQcmdZViewItem

 

was going to suggest Dynamat:

http://www.dynamat.com

But that one you linked to in the ebay auction is much thicker.
The only advantage to the Dynamat, I would imagine, is the self-
adhesive nature of it.. however, they don't mention how difficult it
is to remove the stuff, should you need to in the future.

 

How about roofing felt--the black stuff that comes in rolls and
different thicknesses & goes on roof-sheeting and under the shingles?. They
get HOT! Cheap, too. s