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Date:         Wed, 15 Nov 1995 09:37:24 -0800
Sender:       Vanagon Mailing List <vanagon@vanagon.com>
From:         Pat.Spragge@wj.com
Subject:      Re: Possible soundproofing alternative? (was: Seek and Ye Sh

I have been looking through some of my design magazines trying to locate the source for sound deadening material. I've seen what looks like black foam rubber with an adhesive backing that one cuts to shape and applies to the sheet metal.

The particular article that I remember was discussing sound deadening in trucks, big rigs, or tractors, as in tractor trailer. Anyway, this material was used along with an adhesive which was used between the sheet metal panels and the frame of the vehicle. This combination was said to reduce vibration and noise considerably.

The foam was available in different thicknesses from, as I recall, a thin sheet, maybe 1/16" to 1/2-5/8" or thicker.

I'll keep looking for a source.

Pat S.

______________________________ Reply Separator _________________________________ Subject: Possible soundproofing alternative? (was: Seek and Ye Shall Author: "Maher, Steve (SD-MS)" <SMAHER@po2.gi.com> at INTERNET Date: 11/15/95 10:44 AM

>Background: I want to spray a 1" layer of rigid urethane foam on Grendel's >ceiling, possibly other surfaces as well. > >Problem: I couldn't find any spray foam in consumer-sized quantities. <snip out some very useful stuff about spray foam>

I once got some "Spray Undercoating" (don't remember the exact name, sorry)-- some rubberized spray gunk designed to go on the bottom of your car to rustproof it. I've heard mixed reviews-- it works, it doesn't work, you can't get it off, it comes off too easily, it traps moisture, etc.

But-- once I sprayed it on the car in question (wasn't a VW), boy did that car quiet down. Cheap, too-- two cans did the whole underside, total cost around $10. It took a while to harden, but never dripped, never expanded, just sat there.

I wonder if this stuff would work on the inside of the car? You know, remove inside trim panels, spray the sheet metal you find there, let dry a few days, replace the panels. Would it deaden the sound like my application did to that car so many years ago? Would it release/continue to release noxious fumes that would kill you dead, or explode when you turned on the radio or whatever?

Anyone ever tried this? Any words of wisdom/warning/woe/wow?

Steve Maher smaher@gi.com '71 VW Transporter '80 V6anagon soon


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