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Old 05-10-2014, 10:06 PM   #1
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rain water leak help

Hello, my name is Dan. I'm new to the forum here. I have a 2002 jayco 285bhs 5er with a mystery water leak. I had to replace my taillights this year and when i took the old ones off i discovered the wood was very damp mostly behind the passenger side. I later on added a hitch and wiring for my boat. We cut into the tail lights for the power and we ran wire loom down and out the bottom of the camper right in front of the bumper. When we cut the black "felt" type floor covering a ton of water came pouring out. Since then every time it has rained water will run out of the cut. The wood is somewhat rotten on the bottom of the rear wall. I can't figure out where its coming from at all.
I have sealed up all the rear joints, the rear awning screws, taillights, etc... I am not sure if its coming from somewhere further up the roof or maybe around the ac? Anyone ever had a similar leak? If it was leaking by my ac and running back, would it not impact the rest of the roof on its way to the rear? I have no other signs of water in the camper at all except for under the bottom bunk in that back right corner. There is a storage compartment and the rear of that is rotten, which would be the gap from the back wall. Any help would be appreciated.
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Old 05-10-2014, 10:22 PM   #2
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Have you checked up at the roof line where the roof and back wall meet and are sealed? ( water leaking down the face of the back outer wall )
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Old 05-10-2014, 10:24 PM   #3
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Welcome to JOF

RV leaks can sometimes be difficult to find, but here are some thoughts that come to mind:

* Rear wall/Roof seam and Sidewall/Roof seams (especially along the gutter rails).
* Roofing material rip.
* Roof vents, stink pipes, skylights, etc.
* Marker lights.

To check the A/C seal, remove the grill from the interior ceiling and inspect the wood around that area.

Bob
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Old 05-10-2014, 10:28 PM   #4
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All seems to be good there. The roof wraps down the rear wall about 1 inch and its all tight all the way across. I have sealed every seam that looked bad in the back of the camper. There is such a puddle of water that comes out after each rain that i can't understand how it isn't more obvious as to where its going in. Is there a layer of aluminum in the ceiling that would allow water to run backwards without being in contact with the ceiling material? If it were leaking around my ac?
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Old 05-10-2014, 10:38 PM   #5
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There isn't any metal material on the roof structure, but like any roof leak it will find the path of least resistance.

As far as the ceiling, if the ceiling surface has raised "dimples" in any area that is a sign of moisture damage.

I mentioned the gutter rails because if water gets "behind" them the moisture will search out the screws and work it's way into the roof/wall structure...., it happened on my 2005 Eagle.

Bob
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Old 05-11-2014, 12:34 AM   #6
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If you have a window in the back of the trailer that could be your source. The windows are put in WITH OUT caulk.
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Old 05-11-2014, 08:05 AM   #7
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I don't seem to have any dimples or brown spots of any kind, except around a few of the staples that hold the ceiling material to the upper plywood. They are all a little brown, even on the slide. Other than that i have no noticeable signs. I also have no rear window. I will have to check the side gutters a little more. I did towards the back, but if its leaking somewhere forward of that then it could be my problem.
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Old 05-11-2014, 08:06 AM   #8
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Rain in the forecast? Throw and secure a plastic tarp over the roof line and see if you still get water. ( processs of elimination)

Just thinking out loud
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Old 05-11-2014, 09:03 AM   #9
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I live in central MN, we have definitely had our share of rain every other day. I will try and get outside to look over a few things. I do appreciate all the help on this.
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Old 05-11-2014, 09:42 AM   #10
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Be sure to post an update when you figure it out.
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