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Date:         Thu, 8 Apr 2010 14:39:47 -0600
Reply-To:     Tom Buese <tombuese@COMCAST.NET>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Tom Buese <tombuese@COMCAST.NET>
Subject:      Re: Was: Stereo Upgrade Project Now: Vapor Barrier
Comments: To: pdooley <psdooley@VERIZON.NET>
In-Reply-To:  <0L0K003NFQF1UL32@vms173009.mailsrvcs.net>
Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes

On Apr 8, 2010, at 2:04 PM, pdooley wrote:

> I shoulda google searched before posting that. > Seems like others say tyvek no good for same reason. > You just want suitable plastic.

Vapor barrier like 6 mil poly keeps vapor from migrating from the warm side to the cooler side, while Tyvek like materials (house wrap) are on the outside & must be permeable to allow any condensation inside to migrate to the outside. No Tyvek needed in a vanagon, but the interior vapor barrier is critical to keep your metal from rusting & door panels from warping.

YMMV,

Mr. BZ-vapor migration is insidious > > At least the other home depot product (peel-n-seal) works good! > > -----Original Message----- > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On > Behalf Of > Jake de Villiers > Sent: Thursday, April 08, 2010 3:11 PM > To: vanagon@GERRY.VANAGON.COM > Subject: Re: Was: Stereo Upgrade Project Now: Vapor Barrier > > You don't need the barrier to breathe, the water's supposed to drain > out the > holes in the bottom, not warp your door panels. =) > > Cut yourself a new liner from 6 mil poly vapour barrier, available > at home > centres and lumberyards everywhere. Install with the caulk of your > choice > and you're golden. > > On Thu, Apr 8, 2010 at 11:34 AM, pdooley <psdooley@verizon.net> wrote: > >> Something I always thought of using is Dupont Tyvek. >> It's a high performance vapor barrier for homes, installs under the >> sheathing. >> Suppose to let moisture out of the walls but keeps water from >> entering. > So >> it breathes but doesn't leak. It's also very durable. Some mailing >> envelopes are made of this stuff, doesn't rip or tear. >> Installs with a regular looking tape available at lowes/home depot >> etc. >> >> I'm gonna try it next time the need arises. >> >> -----Original Message----- >> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On >> Behalf Of >> David Beierl >> Sent: Thursday, April 08, 2010 1:57 PM >> To: vanagon@GERRY.VANAGON.COM >> Subject: Re: Was: Stereo Upgrade Project Now: Vapor Barrier >> >> At 01:27 PM 4/8/2010, Peter DiFalco wrote: >>> So... what should I use as a vapor barrier? Any online sources for >>> that? >> >> The original is polyethylene film, I'm guessing ten mil. Regular >> household Saran Wrap is the best easy-to-hand vapor barrier I know, >> much better than polyethylene for equal thickness. That and tinfoil, >> which is harder to handle but a perfect barrier. >> >> Yours, >> David >> > > > > -- > Jake > > 1984 Vanagon GL 1.9 WBX 'The Grey Van' > 1986 Westy Weekender/2.5 SOHC Suby 'Dixie' > > Crescent Beach, BC > > www.thebassspa.com > www.crescentbeachguitar.com > http://subyjake.googlepages.com/mydixiedarlin%27


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