Join Date: Feb 2009
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As an epilogue to the leak issue...
We took the van to local bodywork repairer (Martin Brooks at Upton, Worcestershire). He managed to cut through the plastic gutter and found a hole underneath. Long story short - it's been filled, re-sealed and repainted and you would never know the difference.
Only real point to make (and no scare-mongering intended - this could well be isolated to our van) is that the gutter/fibreglass hitop method of attachment seemed to make the leak inevitable as far as I can tell. The drain holes were at a level which meant that there was often 1/4" of water against the van bodywork. This, coupled with the fact that there was an untreated wooden block used to attach screw fixings which just soaked up water, seemed to accelerate the rust in one area.
As I said, probably isolated to our van, but perhaps keep an eye on the drain holes in your gutter trims and make sure they don't get clogged up.
Anyway, van fixed so I'm happy now.
Thanks to all that posted on this thread.