Water in storage compartment after rain

yea just wondered if anyone knew what I should use here

luberhill wrote:
Where would I find black rubber caulk

http://lmgtfy.com/?q=black+rubber+caulk

yea this is a storage compartment under the coach...its a box..I called Winnebago they said the box is completely sealed, or should be. They said it must be water from the rear tire and the seam of the "box" (compartment) must have a void so they said seal it from the inside of the compartment.
They use some kind of black rubber caulk...
I do see a few small spots where I can shine light thru...
Where would I find black rubber caulk to reseal

Water goes downhill ... finding the source can be a MAJOR pia. If it were me I would have the rig pressure tested and have them tell you where the source of the leak is and whether it's a DIY patch. Not sure of current cost but it used to be around $100?

This is tight and it came in while sitting in a rain two days, coming from up above not below

I'd check for exposed seams of the wet compartment. Under the RV. If there are any seams that is. Some RVs come with molded plastic compartments, others are rectangular metal boxes with seams and if a seam opens up, it will let in water as you drive on rain dampened streets.