by mcbutler » Sat Jan 08, 2022 12:01 pm
I have had this snag twice on my jumbo so here goes;
Both my leaks were along the line of mastic that runs the length of the roof near the edge on both sides, a soft rubbery material.
On a dry day i got some blue tack and divided the length of the channel the joint is in into 12" lengths, I put water into each length one by one left it for a few mins and repeated till the leak showed up.
The hole might not be obvious at all, you need to pick at the edge of the seal really carefully looking for any place where you can lift it away from the bodywork.
Go to a camper/caravan place to get the right sealant, dont use silicone etc it wont last in UV light
2014 Mk 8 Jumbo 350 2.2 RWD single rear wheels