carpet underlay as insulation.

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Forum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=100430
Printed Date: May 12, 2025 at 9:12 AM

Topic: carpet underlay as insulation.

Posted By: extacy
Subject: carpet underlay as insulation.
Date Posted: December 26, 2007 at 4:04 AM

I was sitting around with a piece of carpet underlay that got left after I carpeted my new place. Then I started thinking, how about this instead of Dynamat or something else for insulation.

Its kinda like a rubbery material, actually it is more or less rubber.

... yours thoughts on this folks ? Worth giving it a try ? It would be real cheap. (5sqft for around a dollar)

Replies:

Posted By: xkuntrycowboyx
Date Posted: December 28, 2007 at 3:58 PM

it's not dense enough, wouldn't really make sense. just be wasting money.

Posted By: sparkie
Date Posted: December 28, 2007 at 7:34 PM

It will work to a degree. The problem is most vehicles already have some matting or foam underneath the carpet to absorb sound and heat. Carpet underlayment is thicker than dynamat. It might make it difficult to get the carpet and trim to go back into place correctly.

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sparky

Posted By: d_stever
Date Posted: January 22, 2008 at 12:51 PM

i tryed it on my old '90 ranger, but i didnt like it and ended up ripping it out, it was too bulky and just didnt look right. put as far as sound, i really didnt notice a difference from the stock padding

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