Shrink wrap with moisture absorber?
 

I am considering wrapping the 911s (like boats in shrink wrap) with a bucket of "Dry Out" chemical dehumifier wrapped inside. Can anyone tell me why this is a bad idea or won't work to keep the car dry? I can't move to Santa Fe or drive the 911s in the snow very well (plowing stinks around here and salt is in use). So, the cars are tucked away for the winter and I would like to keep the condensation at bay.
Thanks.

I put mine in a "car jacket" that came with desicant. This is my second year using it and it works great. Do a google search on car jacket.

I would not wrap it tite like a boat. I have seen the plastic or whatever they make the stuff out of release something that lift and crack the paints on autos. A fabric type cover may be the best

cg

Many of those things use vinyl - it outgasses vinyl chloride which is really bad, and then that also turns into HCl - hydrochloric acid - also bad! This stuff is known to photographers who store negs and slides -- they won't use it and pay extra for a different type of plastic.

See the prev. threads on this - I think we decide you'd be ok with a vinyl "hoop tent" type one with a ventilating fan.

Or just use a flannel car cover, with a water shedding one over it.

I am actually considering a blue poly tarp to "envelope the car" over a Noah cover. This would help keep the vermin out and, with some humidity absorber, pretty dry as well. Think there would be any outgassing or conversion with this setup? Thanks.

Sure there will be outgassing - but not the kind you need to worry about - and it will be ventilated well. Don't think the crystals will work to reduce humidity - big volume and not really sealed.

Nothing beats a garage tho.

Thanks Randy and all. I'll give this a shot and let you know what happens.

LOL LOL LOL LOL

I think they started putting warnings on those blue poly tarps because of the problems with cracking your paint, something like "not to be used for autos or painted surfaces"

cg

They do have that warning but I am assuming it is warning against the poly tarp making direct contact with the paint. In may case, the poly is over a car cover.
I am pretty sure this should be okay. Anyone have any experience with problems doing this poly tarp "sealing" technique?

this is easier for $150
http://www.autosportcatalog.com/index.cfm?fa=p&pid=2400

Yep. That's it exactly.
My poly tarp and clothes pin alternative is similar .. and way uglier.