Hi all, I have a front engine transit-style bus, which means the back end of the bus is always a little bit higher than the front end. This seems to mean that when water runs down the rear emergency door, it accumulates underneath that door, causing it to form some rust, and it also seems like water is somehow seeping/wicking underneath
the perfectly good door gasket, then up
into the metal floor of the bus.
I attempted to take a picture of this phenomenon today during a pouring rain storm. I don't see any active water dripping, but the (still rusty) floor is definitely wet from the rain.
Are there any good tips or ideas on how to remediate this? The back door area is awfully rusty from all that water accumulation so I'd really like to shore it up somehow if possible.