I had a Tyvek cover for my Audi and it lasted less than a year. Its very light and packable but useless in the sun out here in CA. Mine also started to shred at the seams from the wind. That said, $40 for a homemade cover once a year is dang reasonable. I've tried just about every brand and material of car cover in the last 12 years and so far the best is a custom made polyester cover. Something close to Cordura backpack cloth that a friend with a surfboard bag company made for me. Its going on its 5th year of year- round abuse here in the SF Bay Area. I ripped it recently putting it on my Syncro which tells me that the sun has done its damage and rendered the cloth thin and rippable. 5 years is very good for a year- round cover. Jeff in Marin On May 27, 2011, at 2:11 PM, Automatic digest processor wrote: > Date: Fri, 27 May 2011 11:10:16 -0600 > From: Tom Buese <tombuese@COMCAST.NET> > Subject: Re: Thoughts on tyvek (westy cover) > > On May 27, 2011, at 10:40 AM, Chris S wrote: > >> Got pics? >> =20 >> Since it holds water, are there issues with vapor breathability? >> =20 >> I heard of hikers using tyvek to insulate their tents in the >> winter.=20= > > > Tyvek is a breathable house wrap used to allow any vapor migration > from = > the warm side, usually the inside, to the outside. I think it should > be = > a very good/inexpensive material for a car cover, unlike a plastic > tarp = > or Visquene. A vapor barrier like foil or plastic is placed on the = > inside to keep vapor from traveling into the insulation where the > dew = > point usually occurs & condensing in the insulation/wall. The house > wrap = > allows moisture to pass out but not in because of the warm to cold > path = > that vapor takes. > Now if it is warmer outside than inside, the path would be reversed, > but = > at that point, I don't think the dew point occurs in the insulation > so = > no condensation? Someone help moi here? > > YMMV, > > Mr. BZ-on outside of tent only? |
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