Winter storage Question

[CCer]

I keep my car in an unheated shed over winter. The shed has a dirt floor.
I cover the car with a car cover. I've heard concerns about moisture, and rusting on thr chassis. My question is, should I park the car on the dirt floor, or put down a sheet of plastic, and park the car on it?

 

[adawil2002]

Put down plastic or a tarp. anything to keep moisture in the ground.

 

[bad_idea]

I parked my car in a metal storage unit for the winter years ago. I checked on the car occasionally and found condensation on the bottom of the car. The storage unit had a concrete floor. I ended up putting a dehumidifier in there to handle the moisture.

 

[Stuart in MN]

Depends somewhat on where you're located and the condition of the shed. If you're in the north where everything freezes hard and stays that way until spring, it probably doesn't make much difference. I've stored cars in Minnesota in sheds with dirt or gravel floors before, with no apparent problems from ground moisture. Still, it wouldn't hurt anything and will be cheap insurance to put down a tarp or sheet of plastic underneath the car.

 

[astroracer]

The shed will get warm when the sun is out. Even on a below zero day. That will cause a lot of condensation inside. I would suggest putting down a couple of sheets of marine grade plywood to park the car on. Even with the plastic sheeting IF it is directly on the ground it will cause condensation inside the "cocoon". The plywood will keep the condensation from forming on the bottom of the car. Put a loose car cover on it so it can breathe and you will be okay. Not perfect, but better then the bare ground.
Mark