<VV> Car Covers and Dew

[RoboMan91324 at aol.com]

Alan,

Yes, I have seen that kind of moisture as well.  I suspect that it comes from 
one, the other or both sources we have been discussing.  To some degree, 
moisture will rise from most surfaces you park a car on.  In addition, even with a 
plastic sheet, air will still circulate under it unless you go to great 
lengths to seal the edges.  In any case, I suspect the larger proportion comes from 
the circulating air and dew.  After all, from whatever direction it comes, it 
must be the circulating air that wafts the moisture from the ground up under 
the tarp if it is water proof.

I agree completely that the best method to prevent condensation/rain, sun 
damage, bird poop, etc. is to keep the vehicle inside.

Doc
1960 Vette; 1961 Rampside; 1962 Rampside; 1964 Spyder coupe; 1965 Greenbrier; 
1966 Corsa Turbo Coupe; 1967 Nova SS; 1968 Camaro ragtop
~~~~~~~~~~~~~~~~~~~
In a message dated 3/10/2009 2:22:32 PM Pacific Daylight Time, 
alan.wesson at atlas.co.uk writes:

> Hi Doc
> 
> Lots of good sense here and I agree with most of it.
> 
> However, the bit that I would question slightly is that the moisture only 
> comes through the cover - yes, most covers are porous, and are designed to let 
> moisture both ways, but I have several scrap cars here which are covered with 
> completely waterproof tarps (on some of the I use builders' damp-proof 
> membrane), and they still get moisture under the cover, whatever the surface they 
> are on (usually tarmac or gravel, here). That's why I only keep scrap cars 
> outside.
> 
> Apart from that, as I said, not much to disagree with. Bt it underlines what 
> will be the first paragraph of Book 2 of the Got Rust? saga, that I am 
> currently writing.
> 
> That is going to say that the most important thing you can do, bar none, as 
> soon as you get a classic car, is secure good, dry storage for it. And if you 
> have to pay a rental for the storage, the money you pay will be saved many 
> times over by the repairs you won't have to do to the car and the depreciation 
> it doesn't cause.
> 
> Cheers
> 
> Alan


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