Aluminum under skin - Is it a good idea?

I don't like metal bellies. They tend to hold moisture and cause floor joist and subfloor rot. All of the metal bellied trailers I've had have had severe belly rot...

The problem comes from leaks above. As the water travels down, it settles in the belly and can't escape, resulting in a nice warm rot soup. Metal belly material also sweats, adding even more moisture.

Not sure what the remedy is. I've drilled holes in the metal to allow some breathing, but that is iffy at best. I use styrofoam insulation to keep it from absorbing any water. All trailers can get wet bellies, but when the bottom is metal, the damage is always worse.

Depending on the damage you found and repaired, it would probably be best to NOT seal the metal pieces too tightly. Hope this helps.

Absolutely no offense to Soup!!!

SOUP Maybe that is because you are rotten soup. My bad I just couldn't pass that opportunity up.

When I remove the aluminum underside or at least the front and rear sections. What should I coat the underside with?  I know I had water getting up underneath on a camping trip and it was still wet a week later.  The camper is stored on sandy  ground in northern michigan. I wondered if putting a tarp on the ground might help with some of the humidity from the ground... Or is that not a big deal