Date: Thu, 25 Mar 2004 10:36:46 -0800
Reply-To: vanagon <vanagon@ASTOUND.NET>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: vanagon <vanagon@ASTOUND.NET>
Subject: Re: Sound Deadener Installation Concerns
Content-Type: text/plain; charset="iso-8859-1"
You wrote,
Using roofer's felt stuck on with some contact adhesive is the worst idea.
If you speak to a mall owner, you will find that their biggest problem and
ongoing expense is locating and repairing roof leaks. And their roofer's
felt is
stuck on with asphaltum heated to several hundred degrees
Yeah George, but we are not using it outside on the top of the vanagon are
we?
We are using it as a simple medium for vibration dampening and for that it
works well.
Dont take my word for it, I was simply making a less expensive, and easier
to remove solution than Dyna mat and the hugely expensive "sound deadening"
solutions on the market, which IMHO are overpriced, too sticky, too heavy.
Go look at any vehicle in the junk yard and see what is stuck on the inside
of the doors, its an asphalt impregnated material glued on with adhesive,
and can be removed for body work if needed.
What ideas, solutions, suggestions,are you offering, besides saying my idea
is the "worst idea"?.
Whatever, to each his own.
Doug
----- Original Message -----
From: "George Goff" <THX0001@AOL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, March 25, 2004 4:59 AM
Subject: Re: Sound Deadener Installation Concerns
> In a message dated 3/24/04 5:24:29 PM, vanagon@ASTOUND.NET writes:
>
> << . . . In the old days we used undercoating and fiberglass matting and
> built it up on the
>
> inside of the doors. It really makes the whole vehicle feel allot more
>
> solid. I would hate to be the body guy now having to scrape that crud off
>
> the inside of the quarter panels we did.. . .
>
>
> . . . The stuff in the back of your vanagon over the engine deck, behind
back
> seat
>
> and up front in the footwells is definitely there for sound deadening and
>
> heat insulation. It is put on very well to not allow water to easily get
in
>
> between the metal and the material. If you have ever removed any of it,
you
>
> will notice it is very well stuck on. . . .
>
>
> . . . Anyway, if you want an alternative to Dynamat get some heavy
> construction
>
> felt like #30 or #60 and cut it into the shape and use a MILD contact
>
> adhesive that will keep it attached for then next 10 years or so like 3M
#77
>
> spray on adhesive, it is not that strong of a bond use it sparingly and
you
>
> will be able to remove the asphalt felt at a later time. . . . >>
>
> In the old days in my part of the world, bodymen would apply an extra
charge
> for work done on a car which had been rustproofed because of the hassle of
> dealing with all the goo.
>
> The asphaltic sheets in the Vanagon are definitely in place to dampen
panel
> resonance, but I don't know about their usefulness as heat insulation.
Anyone
> who ever had the occasion to stand on a built-up asphaltum roof in the
middle
> of August might agree with me.
>
> Tar is great stuff, but it can be a mixed blessing. Whenever it is warm,
it
> will conform and stick to nearly any dust-free surface. But, if cold
enough,
> it becomes as brittle as a witches tit. Coupled with the different
expansion
> rates of various materials, asphaltic sheets can delaminate from the
surface
> to which they are applied. That is exactly what I found when I pulled up
the
> front carpeting in my van. Under the loose asphaltum I also found
unpainted
> floor metal. I caught it before it rusted, but if left go with that
moisture
> trapped beneath the loose sound deadening material would have been the
perfect
> recipe for rust.
>
> Don't think that you can dodge the bullet by living in the Promised Land
of
> Southern CA. Condensation, a spilt cup of coffee, a minor leak in a heater
core
> and who knows what else can cause moisture to be entrapped.
>
> Using roofer's felt stuck on with some contact adhesive is the worst idea.
> If you speak to a mall owner, you will find that their biggest problem and
> ongoing expense is locating and repairing roof leaks. And their roofer's
felt is
> stuck on with asphaltum heated to several hundred degrees.
>
> George
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