So about a week ago we opened the back of our 00' Honda Odyssey to convert the trunk into the two extra seats and found that under the part of the trunk that gets flipped up, rusty water was pooled, (rust from the the metal in the overhanging seat/trunk floor, as the underside of that was stained too).
We had no idea where the water came from as the trunk lid closes and appears to seal properly. A bit forward of the trunk lid there is some damage from sun/rusting so that's my theory. Tried shoving some plastic bags in there. The next day after another night of rain the water was back.
Garage is currently unusable so I figure my best bet is just covering with a tarp every time we're not driving (turns out tarp isn't cheap..), but then when we drive in the rain we'd have the same problem.
Any ideas if any form of insurance should cover this?
Hmm, can you blame it on an event covered in your policy? hail, previous dodgy repair job that should be covered by them etc.
Unless you can, a 20+ year old car is highly prone to rust, if anything it's expected no matter how well you keep it unfortunately, insurance would likely not cover it.