Aluminum siding/wood rot repair

westend wrote:
Most leaks will start at the roof line. When the water has intruded for awhile, and rot in the frame ensues, other siding joints will start to leak because there is no longer any frame to support the siding.
The holes adjacent to the window frame may have been from fasteners that attached siding to the frame. If the holes are in places where a fastener could not be used to attach to frame, then you'll need to seal them. Conventional auto body fillers work well in this kind of repair.
Corner trim that is leaking should be removed and if butyl putty tape has hardened or missing, it should be replaced. After the corner trim is fastened, seal the edges to the siding with a polymer sealer like Proflex RV.
I restored my Starcraft from the inside, removing the interior paneling instead of removing the siding. If necessary to remove siding, it is interlocked between pieces and is installed from the top-down, unlike residential. Removal is the opposite, from the bottom-up. You'll also need to remove any corner, door, and window trim that secures the ends. I'd suggest to work on any framing from the interior, if at all possible. That takes siding removal out of the process and leaves the trailer closed to the elements while work continues.