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Leaking Window - Roof support seal to A-Pillar seal

11K views 8 replies 5 participants last post by  voxmagna  
I thought one of those roof member seals was only available with the section itself which came unpainted? :confused: Try the Krytox lubrication first.

If you have 100% decided on replacing the seal I would try something if you have nothing to lose: First make sure the roof sections are aligning correctly, there are 'limit stops' adjustable by the sensors. If that looks good clean off all traces of Krytox with alcohol wipes then try smoothing some black silicone sealant over the lower part of the seal then wipe the upper part with silicone grease or Krytox and close the roof. The silicone should form itself into any gaps, cure and stick to the lower half but should stay free on the top side. I'm not usually into doing 'bodge' jobs, but when there is nothing to lose, some things are worth a try. I have used silicon to tidy up their rubber seal 'welds' at the rear where there is a confluence of 3 seals and it worked very well.
 
IMHO there is never one reply that fixes everything. In the past I've thought I've found a solution to one problem only to find a leak from somewhere else and all contributions are welcome.

Another thing not mentioned and visible in the photo, is hollow roof seals open at one or both ends. On the roof side member seals, V.W insert rubber plugs. A long hollow seal can hold quite a lot of water. For example, on the 'A' pillar seals if water can get inside, a lot can rush out cornering or after opening the roof. For a 6 mm i.d dia hollow seal that could hold up to 3.6 cc. and water shouldn't get that far in the first place. I would rather put up with a couple of small drips than a torrent of water landing on my knees. Wherever I can find an open seal and in dry weather, I close off the open ends with a plug of black silicone. But as I said, this is 'preventative' and may not be a solution for all.
 
I may have a similar problem after a roof teardown and rebuild. Check the shut gaps when the roof is closed against the specs. My 'A' Pillar to top roof section shut gap is about 1mm wider than it should be. I know it's wrong because of the wind noise hear. You can prove it by temporarily covering the seal join with a strip of electricians pvc tape. I've had tape on a few weeks now, no noise or water coming in so I know I'm on the right track.

I 'think' I know how to reduce the gap without upsetting all the other seal and shutgaps, but I haven't tried out my ideas yet.