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Old 11-03-2020, 11:05 AM   #1
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2018 Interstate Grand Tour Ext
Join Date: Dec 2017
Posts: 796
Black streaks

Anyone else get this? I have black streaks after every rain...3 years now. Airstream thought they fixed it...trimmed the black seal back and coated it, but it's back....both sides.Click image for larger version

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Old 11-03-2020, 03:48 PM   #2
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2015 Interstate Ext. Coach
Columbus , Ohio
Join Date: Sep 2016
Posts: 299
I believe it's coming from dirt/dust buildup on the black matte coating between the crank out windows and the frame. I've minimized the streaking by opening the windows up and wiping the coated area clean. I've also noticed streaks coming down from my roof too. I'll need to get up there and scrub it clean once we get to warmer weather here in the next month.
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Old 11-04-2020, 02:18 PM   #3
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2019 Interstate Lounge Ext
Clearwater , Florida
Join Date: Aug 2019
Posts: 8
Have had that happen after a few rainstorms every since I took delivery of my 2018. I just assumed it was the rubber around the windows dissolving and running down the side of the van. Somewhat unnerving if that’s the case and based on the consistency I have no reason to suspect otherwise. Will be interesting to see what’s left to seal the windows in 10 years.
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Old 11-05-2020, 11:53 AM   #4
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2018 Interstate Grand Tour Ext
Liberty Township , Ohio
Join Date: Oct 2018
Posts: 118
Have also experienced this issue since day one of ownership of my brand new rig in August 2018. Cleans off easily so I have not sweat it...although if a remedy is out there I'm all ears!
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