Tyvek (the Dupont brand house wrap) is a vapor-permeable material. It's
non-woven, non-directional HDPE (spunbonded olefin) and breathes while
shedding water.  Very flammable, very slippery.  I like to use it inside
out when wrapping a house, less advertising. :)

Gregory Smith
'88 Vanagon GL

Smith Design Studio
Small Building Company
Olympia, WA
360-239-0429
gregoryfsmith.com

-------- Original Message --------

Date: Fri, 27 May 2011 12:40:36 -0400
From: Chris S <szpejankowski@GMAIL.COM>
Subject: Re: Thoughts on tyvek (westy cover)

Got pics?

Since it holds water, are there issues with vapor breathability?

I heard of hikers using tyvek to insulate their tents in the winter.=20

Chris.