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08-22-2021, 03:42 PM
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#1
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Established Member
Join Date: Oct 2019
Location: Jacksonville
Posts: 11
M.O.C. #25099
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Water leak.
Hi folks, so our 2018 3791 has a water leak in several locations, notably the three smaller slide outs with windows. We're here in Northern Florida where is rains fairly regular and I noticed that water has collected under the slide outs between the floor and the moisture barrier. I have looked for seal damage and have applied silicone around the windows, but to no advantage? What am I missing, btw we came from Arizona where there is no rain, to speak of, so this is a new development. Thanks in advance.
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08-22-2021, 09:15 PM
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#2
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Montana Master
Join Date: Oct 2012
Location: Box Elder
Posts: 4,677
M.O.C. #12947
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On our rig, with the older style windows with the frame against the wall, we had leaks some years ago, and I discovered the butyl tape used between the frame of the window and the exterior wall had shrunk leaving a microscopic gap, just enough to allow water to get past and run down inside the wall and ultimately migrate under the wall and get the carpet wet. I ended up sealing all the windows with silicone caulking at the edge of the frame and the wall and haven't had any water intrusion since.
__________________
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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08-23-2021, 05:18 PM
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#3
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Montana Master
Join Date: Jan 2016
Location: STAYTON
Posts: 1,118
M.O.C. #18157
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Check the top of your slides to make sure the screws holding the outer trim around the slide haven't penetrated the roofing. (Mine did)
THEN, check that the black rubber moulding on the outside at the bottom where the lower J metal starts is sealed, a leak there will get your slide carpets wet.
Of course the obvious thing to check are the slide seals. Making sure they've deployed properly.
__________________
“Hard times create strong men, strong men create good times, good times create weak men, and weak men create hard times.”
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09-16-2021, 04:42 PM
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#4
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Established Member
Join Date: Oct 2019
Location: Jacksonville
Posts: 11
M.O.C. #25099
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Well followed the mentioned suggestions, and could fine no seal defects, also used silicone around windows. In short I'm stumped, the water is not entering the coach but between the membrane and plywood. I thought I did well with the silicone, not so, just had gulley washer here in Florida and the leak continues.
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09-16-2021, 08:48 PM
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#5
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,323
M.O.C. #4831
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Ensure the seam along the bottom where the wall meats the floor is well sealed. This has been the source of numerous leaks which appear on the floor.
__________________
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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09-17-2021, 03:16 PM
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#6
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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There are trim pieces on the outside of the slide walls, one high and one low, that run the depth of the slide. Make sure these have been sealed as far inwards as you can. Mine were not sealed anywhere close to where they disappear past the rubber flap seals.
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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09-25-2021, 04:19 PM
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#7
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Established Member
Join Date: Sep 2021
Location: Clermont
Posts: 10
M.O.C. #29740
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Take it in and get it checked,
Be for you have a lot of damage
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09-26-2021, 05:26 AM
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#8
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Montana Master
Join Date: Aug 2012
Location: Northport
Posts: 624
M.O.C. #12724
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Take a hose with out a sprayer. Turn water on low and direct water above window . If no leak run water along horizontal seam at floor level. Continue looking with hose until leak appears.
__________________
Paul Northport,AL W4XH
2013 358 RLT Mountaineer
2008 Silverado Duramax
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