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We have had quite a bit of rain in MA recently, and it hasn't been a problem so I'm not worried. I suppose I should fix it right per gtxragtop's suggestion of cleaning everything and starting from scratch, but until I have water on the floor I am not motivated to do that. There is a tiny bit of water dripping out of the bottom of the door if I open it right after a really hard rainstorm, but I have never had water on the carpet. I actually did this more as a precautionary measure because I had removed the vapor barrier a few times to play with the window. I took the lazy way and just slapped the new butyl on top of the old where there wasn't much left. A bit of brown tinge on the black plastic due to dampness over a long period of time before I bought the car. Interesting enough, the pass side right rear sill was slightly off color.
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Please bear in mind that your floors may not be wet, but they may be getting slightly damp (not to the touch) which creates mildew and rust on floors. Are my vapor barriers leaking, just not enough to wet the carpet?Fully dry now since the last fix with the new vapor barriers and new Butyl (that is available at NAPA) Does not matter how much rain or washing with hose. Like I said, I've had wet BMW door sills since I bought the car. I reheated one rear vapor barrier after that side of the rear floor started becoming wet, and it fixed the wet carpet issue. Gtxragtop, so are your door sills dry after a wash or rain? The black plastic sills that say BMW, ///M or ///M5? I ask because mine have always been wet after a wash and I thought it was normal. Pulled the door panels off AGAIN and sure enough, the seal was broken in the same place. After my first fix, I never had wet floors but I had damp/wet lower door panels on both sides. If it is damp in any way, it is leaking and needs to be corrected. With your totally dry hand, wipe your hand on the lower door frame between the outside door weatherstrip gasket and the interior door panel. After a strong rainstorm carefully open the rear door. IT takes a hard rain, with the vehicle at the right angle to get wet floors. The vapor barrier can be separated from door frame and most of the time the floor will be dry. Cleaned door frame with autobody paint prepsol. Bought new vapor barriers, removed butyl AGAIN. lasted around a month with same symptom as above. I removed all old Butyl, installed all new Butyl. Reheat did not work, 1 month later, still weeping BUT NO WET FLOOR Solid, with no signs of coming loose.I suggest a search since this has been covered numerous times. It also gets slammed many times a week with me going in and out of the truck. Minus 30 degree temperatures, blasted with pressures washers. Whole process took maybe 1 hour end to end and that was taking my sweet time. Thanks to the forum members for the info. Car sat over night, peeled the tape off and waxed the trunk and spoiler (apply whatever coating / sealant / product you want)Įasy peasy, its honestly not that hard or complicated once you break it down. Installed spoiled to trunk and taped it down with some painters tapeĩ. Wiped down the spoiler area of deck lid with Isopropyl AlcoholĨ. Applied the tape that lpshikhar mentioend above.ħ. Wiped down the inside of the spoiler with some Isopropyl Alcohol.ĥ. Washed the spoiler with light dawn dish soap and dried it.Ĥ. Used WD40 on a rag to remove the remaining tape and glue.ģ. My M perf spoiler was used so it had some of the old tape still left on it.
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I forgot to update this thread, thanks for the reminder. Solid as a rock and don't have to worry about the tape anymore. Its a clear silicone based glue that is pliable and easily removed if need be with fishing line. Mine popped up as well so I pulled it off, removed all the tape and used a product called Household Goop. Has anyone experienced their spoiler coming off? Any recommendations for an even stronger adhesive? I am concerned that the spoiler will fly off at high speeds or with the slightest amount of pressure, such as when washing the car with a wash mitt. The middle seems to be attached "OK", but I didn't try prying it with force. As soon as I let go, the 2 edges came off about 1/6 of an Inch and stayed that way. I made sure that I had very good coverage with double sided tape, cleaned the surface very well, and even held the spoiler in place for a few minutes right after attaching it. The spoiler is feather light, but it seems to me that it will just fall off one day. I installed a trunk spoiler on my M4 today using the 3M tape that everyone has recommended.