floor insulation

Discussion in 'Interior City' started by buicfrank, Jan 11, 2018 at 7:14 PM.

  1. buicfrank

    buicfrank Well-Known Member

    Thinking about putting down noise barrier and heat barrier. Please tell what you have used and your opinions. Would like to do the trunk also. Thank you Frank
  2. steve covington

    steve covington Well-Known Member

    In my 1971 Skylark Custom convertible I used a reproduction floor 'tar mat' on the base, then used aftermarket Mylar or aluminum foil-backed padding that I cut in a general pattern to match the floor pan. I had to do a LOT of trimming after the general layout. REMEMBER : Measure twice (or more) cut once... You definitely will have to have it bare at the exact locations that the seat pedestals attach; There is NO additional room on the bolts, and you want a secure attachment of the seats with no wiggles. Use a nail to find the hole location on the carpet from below and a hobby knife to make precise cuts into the carpet. Use a piece of short flexible plastic tubing (large straw, chunk of heat shrink) around the bolt to install bolts for seats and seat belts, it will keep the bolt from snagging the loose carpet fibers as you attach the bolts.
    Years ago, before the was the 'civilian' version of insulation (like Lizard Skin) we used an industrial version of that stuff on a frame structure that doubled as hydraulic oil reservoir. We were amazed at how much it lowered the temperature of the oil. So I know that kind of stuff WORKS; but as for appearance, it looks very much like Stucko... And I do not know how well it works as a moisture barrier, or how you would remove the dried product.
    Back to the earlier story...It really quieted the interior!!! And then I put on dual two and half inch exhaust... after a factory 2 or 2.25 inch single pipe...
  3. buicfrank

    buicfrank Well-Known Member

    Thank you Steve. Do you remember the brand of the foil? Frank
  4. Eric

    Eric Founders Club Member

    Frank...I pm'd you...:)
  5. steve covington

    steve covington Well-Known Member

    I got both the tar paper and roll matt from NPD, but Don't see either in current catalog. I used the Chevelle catalog; lots of things are in common. Here's the tar paper: C-SP-101A for 68-72 GM cars; Here's the padding: 970-1B Both on page 26 of the virtual 2017 Chevelle catalog.

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