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Old 07-31-2016, 03:48 PM   #1
Join Date: Dec 2012
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Unsightly crud on 2004 Tiffin

2004 Tiffen Allegro Bay has a nasty looking crud between the plastic front covering and the clearcoat......anybody have an idea what it is (or how to get rid of itClick image for larger version

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Old 07-31-2016, 03:54 PM   #2
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looks like it's underneath the 3m diamond shield, removal may be necessary.
Earl & Sharon, 2008 Fleetwood Expedition, ISB 6.7
1995 Jeep YJ/2013 Chevy Sonic
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Old 07-31-2016, 04:42 PM   #3
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looks like under the diamond shield. Nothing I know of short of taking off the shield and that's a huge job. Usually requires painting after that as well.
Bill & Brigitte
06 Windsor PEQ, Cummins 400 ISL
2014 Honda CRV
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Old 07-31-2016, 05:44 PM   #4
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Some kind of mold or mildew, I'd guess. Based on what I've read here and elsewhere, it's a fairly widespread and well documented problem with Diamond Shield.

John & Diane, fulltiming since '12 02 DS, FL, Cat330, '04 Element NHSO RVM103
John & Diane, Fulltimers. RVM103 NHSO
On the road since June '12 with Lincoln, the guard cat.
2002 Dutch Star 40, Freightliner, Cat 3126, 2004 Element
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Old 07-31-2016, 07:15 PM   #5
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Common Issue

Just do a search on 3M or Diamond Shield and you will get lots of info. My 2004 has the same issue. I am 2/3 through removing it. I have tried steam but in the end, parking in the sun and then working it slowly with plastic razor blades seems to work best. Then the fun begins with getting the residual glue off. Tim
2004 Allegro 32BA
2005 Honda CRV
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Old 07-31-2016, 10:12 PM   #6
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It happened because it wasn't a good application of the Diamond Shield. Our 2004 Newmar had absolutely no issues.
Full-timed for 16 Years . . .
Traveled 8 yr in a 2004 Newmar Dutch Star 40' Diesel
& 8 yr in a 33' Travel Supreme 5th wheel
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