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Old 10-13-2018, 12:52 PM   #1
msgeologist
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M.O.C. #21146
Water/Moisture inside of plastic under electric slides

I have a 2018 3791RD model. The model has 5 slides, 2 hydraulic and 3 new style electric slides (not cable driven, but track driven). I include this info because I have a curious problem occurring I am not able to figure out. ONLY and ALL of the 3 electric style slides are experiencing leaks. I have no water coming inside of my RV. The plastic underneath the slides was sagging down and is sagging on many of these trailers I see, even new ones. Later on after owning the rv I was investigating the plastic to see how I could fix the sagging, only to find water/moisture inside. I drilled a small hole in the bottom of the sagging plastic and water trickled out of each slide. I have investigated every seam and even done some additional caulking, but when heavy rains occur, I still get water into the area. I do have slide toppers. It seems odd to me that it is occurring on all 3 slides that are designed with the electric system and not the hydraulic, so I thought it may be the tracking on the side of the slides. Caulked this area- still no luck. Additionally, I use my rv for work travel, and taking it in for warranty work is not really a option, so I am trying to mitigate the issue myself. Thoughts?
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Old 10-13-2018, 01:28 PM   #2
MARK A
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Could it possibly be condensation? It’s possible that the conditions would correlate to the temperature/humidity changes, especially if the inside is warm.

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Old 10-13-2018, 01:29 PM   #3
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Photos of issue

IMG_4530.jpg

IMG_4531.jpg
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Old 10-13-2018, 01:31 PM   #4
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Hey mark, I have the A/C on 70 nearly all of the time so it is cool inside. However, I had the same thought as well. After the small holes were drilled in the bottom of each plastic piece, I had no moisture for a while so I thought it was condensation and the issues were fixed, however, after heavy rains I still get moisture in there.
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Old 10-13-2018, 01:32 PM   #5
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Sorry for the side-ways photos
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Old 10-13-2018, 05:15 PM   #6
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what?

Have same camper, live in the northeast, we have had constant cloudy rainy days off and on for months with occasional sun shine this year. I checked mine and no sagging from water build up. Maybe just condensation build up or the seam at the bottom and wall intersection leaking that I have read more than once was causing a water problem and eventually rotted floor. Remember the other kitchen slides are much lower than the others heat will rise, guess I will start checking mine more than often now. Or since you have the A/c on all the time the floor inside and outside will be cooler than the air temps and it builds condensation with no air movement cause of the plastic cover? Would be nice to know the outcome of this.
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Old 10-13-2018, 07:18 PM   #7
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You defiantly have a MAJOR issue here. That is not normal. I have an older 2011 model with 4 hydraulic slides. 3 of them have Darco (trap like material ) on the bottom and the bedroom slide has what I think you have on yours. My plastic is cracked in a few places to the point I can see bare wood. I have never noticed any moisture there.

I don't think your issue is a leak since 3 slides are doing the same thing. I would bet an extreme condensation issue. I would get that unit to a dealer ASAP before it becomes a really major issue and rots the slide floors. I would bet that has already started.
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Old 10-13-2018, 07:24 PM   #8
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On another thought, Don't know where you are and if its hot and humid, but try turning off the a/c and opening all the windows and see if the issue lessens or disappears.
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Old 10-15-2018, 07:33 AM   #9
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Just a quick thought, it could be a problem with the weather stripping on the top and side of the slides. The top weather strip should overlap the side weather strip. If the side overlaps the top, water can run down the sides inside the side weather strip, especially during a heavy rain.
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