Date:         Sun, 29 Apr 2012 18:19:03 -0700
Reply-To:     Alistair Bell <albell@SHAW.CA>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Alistair Bell <albell@SHAW.CA>
Subject:      Re: Question about sound-deadening alternatives
Comments: To: Jim Felder <jim.felder@GMAIL.COM>
In-Reply-To:  <CAFnDXk1wuCarp7kKYOynN=bzdzYYVJixR16j+TCEAn7Nhf4bpQ@mail.gmail.com>
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I used a peel and stick, polyethylene backed roofing product on my '82 westy back in 2001.

What i found:

- got a lot of material for 100 bucks
- sticks like you-know-what to a bedsheet
- but in some places, ie where I did not completely remove the factory wax on the panels, the stuff sagged. That was in front doors and it was a PITA.
- off-gassing was not noticeable after job done and interior refitted
- stuff still stuck fast to van now (van being slowly parted out, cut up)
- I used up to 3 layers on the panels
- did reduce road noise, but I suspect that for the best job one would back up the peel and stick with some closed cell foam. I tried the vapour barrier enclosed fiberglass method and while I did not get any rust back there, it is a risky way to go. Closed cell foam would not only insulate, but would also provide better sound dampening.

If I was to do it again, I would not go as whole hog with the stuff as I did back then. Only a portion of the sheet metal needs to be covered with the stuff to dampen the metal "membrane". I am going to do it again come to think of it, on my syncro. But this time there will be about an inch of flexible (ie ensolite type stuff) on top of smaller patches of sticky stuff.

alistair


On 2012-04-29, at 3:51 PM, Jim Felder wrote:

> Alternative for lack of a better word—meaning an alternative to the
> expensive products made for the purpose, that I have to order and
> can't get more of if I run out.
> 
> Over the years I have heard people refer to a peel and stick
> asphalt-based product they got at the home stores. I was poking around
> today and found various sizes of rolls of peel and stick flashing. I
> was not impressed with how thin it was.
> 
> Is this what people are using? Is there another product I should be
> looking for? Is it just not worth it, and I should be ordering the
> real deal?
> 
> Those with opinions, please share.
> 
> Jim