Originally Posted by Biscuitsjam
Mine didn't leak through the rivet holes. The long seams between the metal panels leaked horribly though. I had to scrape out the old cracked caulk and replace it.
My seams had some kind of lap sealant put on pretty crudely on the roof (only on the driver's side of the seams) and some sort of weird tar-like substance sealing some of them on the inside - and I just now realized that the tar-like stuff on the inside couldn't have been done post-factory since the original ceiling was still in place when I bought the bus.
Now I wonder if my bus was defective off the production line (like massively leaky) and they did some kind of immediate remediation work on the bus before sending it on to the initial customer. In addition to the extra riveting on the one rib, there was also an additional stiffener that had been welded on the underside in roughly the same position, comprised of three separate pieces that had been placed and welded together (it's now on the ground behind my bus, part of the floor section that was cut away).
The mystery of Rusty 87 continues!