Hi,
work is nearly finished. Last issue was a leaking roof. We didn´t rebuild the entire roof. We removed the interior aluminium and the styrofoam wich was fully soaked with water. The water went into the roof (only the upper side leaked). But the water had no chance to get out of the roof, so it was the heaviest part of our camper . (2 1/4 lbs per sq.ft. )
The problem is that we had no chance to rebuild the roof in the correct shape. Originally it was a little arched ( i hope this is the correct word). We screwed the two halfs of the aluminium outside plus midlle profile to the wooden panel (north/south) using butyl tape between profile and aluminium and between the roof halfs.
Before:
after:
As an insulation we added 1" closed styrofoam (doesn´t soak water) and covered it with 2mm cork sheets. We prepared these parts before installing. This was not the best idea, so we have to cover the entire roof with some decoration sometimes.
This will be our last work on the camper.
But the roof is not as good as we liked to have it. It is corrugated, but at the moment i am not willing to remove it and rebuild it.
It works well with our 200W Solar-System.