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01-10-2016, 01:57 PM
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#1
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Montana Fan
Join Date: Sep 2009
Location: Olympia
Posts: 410
M.O.C. #9671
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Aluminum roof structure
We live in our 2011 3400RL, and recently noticed we can see the roof joists on the ceiling. Anyone else notice this? Is this anything we need to worry about? I don't notice any leaks.
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01-10-2016, 02:54 PM
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#2
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Montana Master
Join Date: Mar 2015
Location: West Richland
Posts: 1,253
M.O.C. #17164
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Probably a difference in the insulation R value similar to a frosty day and when you look at a houses roof you can see the trusses. A bit mor interesting as it is on the inside of your unit. If you have a inferred thermometer you could check and see what the temperature difference is.
Tom Marty
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01-10-2016, 03:03 PM
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#3
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Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 4,261
M.O.C. #3085
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Assuming you're not sitting in sunny Florida ... I'd look into getting a dehumidifier like you'd use in a stick house. You may have prolonged high humidity and the rafters are sweating onto your ceiling. This is purely a guess.
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01-10-2016, 05:12 PM
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#4
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,677
M.O.C. #12947
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Actually, up until a year or two ago, the roof trusses were steel. We saw at the fall rally of 2014 that they had changed to using plastic trusses, which they assured us were just as strong, if not stronger than the steel. I believe one of the reasons given for the change was to enable easier installation of fasteners during assembly. If your roof/attic area is cold enough, like what was said, the steel may be cold enough to bleed the cold to the inside surface of the ceiling and showing some condensation where the trusses are. It may help to better ventilate the interior of your rig to remove some of that moisture.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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01-11-2016, 12:54 AM
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#5
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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Common on the outside, but we have never seen on the inside of any of our units
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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01-11-2016, 01:29 AM
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#6
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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Never seen that, but we do use a dehumidifier.
__________________
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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01-11-2016, 02:54 AM
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#7
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Montana Master
Join Date: Dec 2004
Location: YUMA
Posts: 861
M.O.C. #2625
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01-12-2016, 02:01 PM
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#8
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Montana Fan
Join Date: Sep 2009
Location: Olympia
Posts: 410
M.O.C. #9671
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Yes we have one and it is on every day except during hot weather.
Quote:
quote:Originally posted by dieselguy
Assuming you're not sitting in sunny Florida ... I'd look into getting a dehumidifier like you'd use in a stick house. You may have prolonged high humidity and the rafters are sweating onto your ceiling. This is purely a guess.
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01-12-2016, 02:05 PM
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#9
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Montana Fan
Join Date: Sep 2009
Location: Olympia
Posts: 410
M.O.C. #9671
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Don't believe they are, but I will check again.
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01-12-2016, 02:21 PM
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#10
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Montana Master
Join Date: Oct 2006
Location: _
Posts: 5,238
M.O.C. #6337
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As always, the disclaimer, which this time is, maybe I just don't understand the issue.
However, gonna take a stab at this.
Do you burn candles or happen to smoke in the unit?
Seems I remember, in the deep recesses of my leaky memory that members reported having the ceiling discolor and such when they burned candles in their unit. They were full timers.
Anyway, something else you can digest and then, spit out.
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01-13-2016, 01:51 AM
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#11
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,702
M.O.C. #7992
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Hope you are not confusing a humidifier with a dehumidifier! The hot days are the days most important to have the dehumidifier on.
Quote:
quote:Originally posted by K&Gs3400RL
Yes we have one and it is on every day except during hot weather.
Quote:
quote:Originally posted by dieselguy
Assuming you're not sitting in sunny Florida ... I'd look into getting a dehumidifier like you'd use in a stick house. You may have prolonged high humidity and the rafters are sweating onto your ceiling. This is purely a guess.
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2006 3000RK
2009 Ram 2500
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