Rick, Have you looked at a tape called Eternabond? A 4" wide, white backed version is all you need to fix your problem of the leak. This stuff is amazing. Just don't let it touch anything or it will be there forever.... place it carefully in other words!
Originally Posted by RickJ
I appreciate your response. The issue with the Sprinter van is the roof is ribbed and when you use a 14x14, the vent cover spans the ribs unevenly causing the caulking or sealant difficult to seal the gaps and causes leaks.
I thought if we had a 10x10 cover, it would only cover the vent and seal well...keeping the water out.