I have been working on the camping trailer project almost every evening a short while, but have not taken any pictures about the progress. So here are a couple of not so good photos showing the current state with seats back inside:

Today I removed roof windows and mounted them back with proper sealing. Originally they were sealed with Blu Tack which hardens during the time or just melts/washes away somehow.  Now I used Sikaflex 521 UV, which is UV resistant and really strong stuff, so I expect it to last almost forever. 🙂