resealing van

hi shane, without actually seeing a pic of the problem i would have a guess and say clean out as much of the old stuff as you can, then refill with white silicone rather than the other types of fillers.You can get bathroom silicone from bunnings but remember to clean the old stuff off before refilling.

I use marine grade Sikaflex in white. Be carefull in applying. It looks crapola if the excess is not cleaned off properly.

I had leaks on my van, I had people saying use this and use that, Sikiflex was one , still leaked, then I remembered back to 1961 when my Dad put 2nd hand roofing on the shed , it had 100s of nail holes in it, he sent me up with a tin of Hydraseal, He sold the property 8 years later and the shed still had no leaks, so I went to a hardware store and to get some, they had Duraseal, basicly the same stuff, my van hasn't leaked since, this stuff is black and if you need to it can be painted over. best applied with an old knife, petrol removes it from hands.

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Hi Shane. I read somewhere that it's a waste of time, and makes a mess, if you try to run a bead of silicon along trim or window frames. So, when I had to do mine, I progressively removed each window frame, the door frame and the corner strips, cleaned out the old sealer, and applied fresh sealer. But no, I didn't use silicon sealer, I used a non-drying industrial caulking sealer, to allow for the flexing that van bodies have to cope with.
While it seems to have worked well, it was a lot of hard work, so be warned!!
Does this help?