johnu

I have a nice cover for storing my car indoors, but occasionally, she will be parked in the driveway. Does anyone have a good suggestion for a weather-proof cover that will keep the car dry in the rain?

thanks
John

worf928

Weathershield

http://www.covercraft.com/carcovers/...shield_hp.html

johnu

From their website, "WeatherShield is not waterproof, but if kept clean it will shed most water and help prevent dust, dirt, bird droppings and tree sap from reaching the vehicle surface."

I'm hoping to find something that will keep the car dry in a solid rainstorm...if its possible

worf928

Unless it is for purely temporary purposes the cover must be able to breath. If it is truly waterproof any long-term use will kill your paint dead. Ideally we'd have a "one-way" fabric that let's water 'out' but let's no water 'in.'

I would think that if such a fabric existed we'd see car covers made out of it. The WS is the closest I've found.

a4sfed928

I thought Dupont Tyvek was described like this.

worf928

Here's how Dupont describes it

Excerpt: I guess somebody needs to do a comparison. A couple of experiments with water should do it. (I googled, a bit. Nothing turned-up.)

Here's some info on various types of covers

I've used about half-a-dozen different types of covers. I've never found one that will keep a car dry in a horse-pissin'-on-a-flat-rock rain storm. Ain't gonna happen - IMO - since you will get water vapor under the cover from evaporation (and from wind-driven rain) and with the top of the cover soaked the vapor will get trapped until the top of the cover is dry. Result: car's gonna be wet for a while. The ability of the cover to breath once it's dry is key.

I question the need to keep the car totally dry. Is it missing the sunroof panel? Or a window? If the car has water intrusion issues then those need to be dealt with. On a temporary basis some actual plastic could be used in the vicinity of a known leak.

A completely waterproof cover would be lower on my list of priorities for outdoor use than a cover that a) is easy to clean (the 'car side' of the cover will get dirty and a dirty cover will 'dry sand' the paint) b) fits like a glove and can be securely fastened so that the wind doesn't beat the cover against the paint (see above reference to sanding) c) is heavy enough to protect against 'casual' damage (acorns, cats sitting on it, etc.) and d) has good acid rain and UV protection.

With respect to 'a' and 'b', opinion exists that a 'pure' Tyvek cover is so light that it "can't" damage paint from dirt or wind. Maybe the latter. I don't buy the former. Tyvek has good "d" properties and so do other covers.

I had a Porsche OE Tyvek cover that came with the GTS. It was a bit dirty on the inside. Washing them is not as easy as with a weathershield. It didn't fit well and didn't meet my "c" need. I sold it.

For me, my final solution for outdoor needs, is a Noah cover under a Weathershield cover. The Noah cover is thick and breathable, but not easily washable and it deteriorates with each wash. The WS cover sheds light rain like Mercury, breaths well, does not deteriorate nearly as quickly with washing and can be washed at home.

Last and in summary: Research the topic. Look into all the 'lettered' requirements (along with any I missed.) Make your own decision based upon your own needs.

LeRox

Dave,

This is from an owner w/out a garage and I appreciate you sharing these sound observations.

worf928

You're welcome. My (first) 928 lived for a long time without a roof.

depami

http://carcapsule.com/Outdoor-CarCapsule/

Schocki

Permabag
Not cheap but very good.

heliflyer

https://www.carcoon.com/carcoon-double-skin-outdoor

No affiliation but a satisfied customer

oups59

I bought a Noah Car Covers ( http://www.covercraft.com/carcovers/noah.html ) 4-5 years ago. I used it mostly for winter protection.

Very good so far.

tv

Interesting topic, I had made my own years ago that did all the functions, but it was multiple layers and tough to put on in any wind, but this one here seems to tick all the boxes ............... and .............. you have to give them MAJOR points for even knowing there was a 928 S2!!!!!!

Waterproof claim and breatheable and fleece against the paint - http://www.carscover.com/1985-Porsch...-SP2393NB.html

I have not used this so no personal knowledge but it will be the one I will try in the future

johnu

I have the identical cover to this one, purchased at Costco for $30. It is an excellent cover, and although water tends to bead off of it, it is not as waterproof as I would like. Looks overpriced when it is over $100

tv

Exactly the same? same 5 layers, same plastic clip things, and same name?