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General E46 Forum
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Old 10-03-2012, 09:53 PM   #1
DjZHP
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Wet Rear Floor

Noticed the rear passenger floor was soaked a couple months ago, so I hit the channel located in the sunroof with some compressed air. Seemed to do the trick for a little while till we had a big storm last week. Once again, the floor is soaked.

I do park under trees, but I don't believe debris in the channel is causing the issue. I'm aiming more towards the vapour seals on the doors. Then again, I could be wrong.

I've seen the DIY repair online but was wondering if anyone else has experienced this issue, and if so, what sort of wear and tear signs should I look for when I remove my door/carpets?

Thanks crew!
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Old 10-03-2012, 09:56 PM   #2
Solidjake
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Check the rubber seal around the doors. That did it for me. Put some 3m double sided tape and no issues since then (3+ years ago)
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Old 10-03-2012, 10:02 PM   #3
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It could very well be torn vapor barrier. If you had window regulator problem in the past, the vapor barrier had to have been removed.

To see if that's the problem you could leave your rear door open and pour water over the outer window trim part. If the vapor barrier is torn, then you will see water dripping down between door panel and inner part of door. If that's the case, open your door panel and re seal the vapor barrier.
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Old 10-03-2012, 10:11 PM   #4
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Should i favor 3M double sided tape over black silicone sealant?
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Old 10-03-2012, 10:20 PM   #5
ryannel2003
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Had the same problem. It was the vapor barrier + bad door clips. The clips have black seals around them to keep the water from coming in the car. The old ones were worn down and causing water to come in. Bought some new ones from the dealer with the barrier and I've had no issues since.
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Old 10-03-2012, 10:31 PM   #6
DjZHP
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Thanks for the replies. I'll take the door off tomorrow and see what i find.
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Old 10-04-2012, 05:35 AM   #7
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If it's the vapor barrier, you should use 3M window weld roll...not the caulk...not silicone or tape.

Jake was talking about the rubber door gasket, not the vapor barrier.

Window weld is the same as is used to seal the VB. If it's torn, tape it up (gorilla tape is good). If it's unsealed around its perimeter, then use window weld. (Available at an auto body supply shop...call up local auto body shop and ask where they get their supplies).
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Old 10-05-2012, 10:28 AM   #8
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Thanks dmax
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