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10-23-2018, 03:49 PM
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#1
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Senior Member
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
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Odd Roof discoloration?
We picked up our Alpine the end of Apr. For 4 months we lived in a CG under some trees that seemed to ooze sap all the time. Now we are under an Oak tree that is constantly throwing acorns at us. The plywood joints on the roof have a black line following them. One section of the roof has the black all over that entire section. In the picture you can see what it looks like after scrubbing the left and right side but not the center with bugs-n-all and Dicor roof cleaner. I have a lot more scrubbing to go. Going to try fantastic as suggested by Chuckster57. Does anyone else have a suggestion for something that works well? Does anyone know why one section would be worse than the rest? Could it be they forgot the insulation in that section? I sure hope not.
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Tom
2019 Alpine 3651RL
2016 F350 CC DRW
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10-23-2018, 04:19 PM
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#2
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Senior Member
Join Date: Nov 2017
Location: Sacramento
Posts: 187
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Is that one dark section under the tree and the rest isn't? A Google search for oak tree stains brings up plenty of results due to the tannin in oak leaves (and acorns?) While there are plenty of suggestions this one sounded like the least harmful to a TT roof. Others may have some different suggestions, but if you try this remedy do a small test patch to be sure it doesn't react negatively.
https://www.washingtonpost.com/lifes...=.007af2bb4fc9
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Number 4: 2013 Hideout 19FLBWE
Number 3: 1994 Skyline Nomad 1661
Number 2: 1971 Santa Fe
Number 1: 1967 Shasta Airflyte
2015 F-250 Lariat 6.2L CC 4x4 3.73
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10-23-2018, 04:30 PM
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#3
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Senior Member
Join Date: Feb 2014
Location: radium hot springs bc
Posts: 2,007
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I have used Awesome Orange diluted with Dawn and water. Scrub, let sit then rinse with lots of water. Seems to work great on the old original Cougar roof. I do it in the spring and seems to stay clean all summer. YMMV
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2018 Ram 3500 6.4 Harvest Edition
2018 Cougar 27RESWE
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10-23-2018, 05:25 PM
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#4
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Senior Member
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
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Quote:
Originally Posted by Number 4
Is that one dark section under the tree and the rest isn't? A Google search for oak tree stains brings up plenty of results due to the tannin in oak leaves (and acorns?) While there are plenty of suggestions this one sounded like the least harmful to a TT roof. Others may have some different suggestions, but if you try this remedy do a small test patch to be sure it doesn't react negatively.
https://www.washingtonpost.com/lifes...=.007af2bb4fc9
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The whole thing is under the tree. . Not sure why the one section is so bad. Is it safe to use a power washer on the roof?
__________________
Tom
2019 Alpine 3651RL
2016 F350 CC DRW
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10-23-2018, 05:34 PM
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#5
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,350
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We use a pressure washer at work every day without issues. Just be careful near the vent lids.
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2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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10-24-2018, 07:05 AM
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#6
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,997
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Quote:
Originally Posted by 66joej
I have used Awesome Orange diluted with Dawn and water. Scrub, let sit then rinse with lots of water. Seems to work great on the old original Cougar roof. I do it in the spring and seems to stay clean all summer. YMMV
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Be very careful with citric acid based cleaners. They will soften TPO roofing membrane, so if you don't get it all rinsed off, look for "sticky roofing" after a couple of weeks..... BTDT.....
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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10-24-2018, 04:53 PM
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#7
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Senior Member
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
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Odd Roof discoloration?
Thanks for the advice, I’ll stay away from the Citrix based stuff. I think my sons power washer will see some use on this roof.
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Tom
2019 Alpine 3651RL
2016 F350 CC DRW
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10-24-2018, 05:21 PM
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#8
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Senior Member
Join Date: Feb 2017
Location: Dade City
Posts: 1,039
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Not sure where you are, we are in central Florida under a large Southern Live Oak Tree. This is our second season under this tree, Yes it is acorn time, January is the green sticky pollen and February is the brown droppings along with the new leaf's.
In March we will have the roof pressure washed again and scrubbed as necessary. We have a in park "Guy" that services a large number of units from cleaning to complete reseal and coating. I am not capable of doing roof top work so his services are apricated.
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10-24-2018, 05:30 PM
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#9
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Senior Member
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
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Quote:
Originally Posted by Frank G
Not sure where you are, we are in central Florida under a large Southern Live Oak Tree. This is our second season under this tree, Yes it is acorn time, January is the green sticky pollen and February is the brown droppings along with the new leaf's.
In March we will have the roof pressure washed again and scrubbed as necessary. We have a in park "Guy" that services a large number of units from cleaning to complete reseal and coating. I am not capable of doing roof top work so his services are apricated.
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I’m in MD for the next 1.5 years. I wish we had someone close that would do that type of work here.
__________________
Tom
2019 Alpine 3651RL
2016 F350 CC DRW
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11-05-2018, 06:12 PM
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#10
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Senior Member
Join Date: Jul 2014
Location: Solomons
Posts: 3,874
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Update, electric power washer helped a little but this roof still needs a lot of cleaning. My passport never had this problem but then it wasn’t stored under trees. I’m seriously thinking of moving it over so it doesn’t have as much tree cover. There will still be some but not as much. Does anyone need some acorns? I have a million in my yard and on the roof.
__________________
Tom
2019 Alpine 3651RL
2016 F350 CC DRW
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11-05-2018, 06:28 PM
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#11
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Senior Member
Join Date: Feb 2017
Location: Dade City
Posts: 1,039
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We picked up a low cost corded blower from HD to clean the patio off every morning. Works great on those Acorn's. Now we have a couple of squirrels doing some harvesting and storing.
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