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Old 06-25-2015, 02:38 PM   #1
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First Leak

While in North Rim Campground a couple of weeks ago it rained most of one day. I noticed a small run of water on the rear window screen behind the dinette of my 25fb. It ran down to where the curbside inside latch was located. I placed a towel there to prevent water from soaking into the mouse fur. I have a rear awning on that window and it was deployed.

During a break in the rain I wiped down the exterior above and below the awning. The leak stopped.

Funny thing it started to rain again and I didn't see the leak reappear.

When I got home I washed the AS and applied a lot of water on the rear window, awning rolled up. No leak showing. Maybe it only leaks when the awning is deployed.

Do you think one of the awning attachments is casing the leak? There was no water in the lower window channel just a drip from the upper window channel running down the window screen. I checked under the dinette seats and all was dry.

Any suggestions what to check?

Kelvin
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Old 06-25-2015, 03:35 PM   #2
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Could be when deployed the awning bracket is pulling away from the side and making an access point for water.
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Old 06-25-2015, 03:49 PM   #3
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Get out your Moisture Detection Meter and probe through the vinyl into the plywood subfloor below that area, to see what you have there. If it's a significant leak that's where it will end up, the worst possible place.

Can be coming from any of multiple openings in the shell above the window, and if conditions are right it can be condensation inside the trailer or between the bulkhead (you were a Sailor).
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Old 07-10-2015, 07:26 AM   #4
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I have the trailer at home getting ready to go out for the weekend and it rained heavily last night. As precaution I placed a towel on the window by the latch and this morning it was slightly damp.

Looking from the latch straight up is the curbside clearance light above. Since the leak is flowing directly on the screen which is where the window is attached to the inner shell I'm suspecting the clearance light but also a curved panel is riveted adjacent. The top window caulking seems OK. I will inspect it better this weekend. I hope I find something there.

I may get some Captain Tolley's Cure and apply to those rivets and then reseal the clearance lights. The caulking looks good around the window. I suppose once I remove the clearance light casing if that is the leak point I should be able to detect moisture there. Is there insulation in that area. I would imagine it is wet.

So far no evidence of moisture under the dinette using my Sonin.

Kelvin
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Old 07-10-2015, 08:58 AM   #5
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Another stronger possibility is the awning support arm bracket mounting screws and rivets, seal around them and the pop rivet center holes.
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Old 07-10-2015, 09:07 AM   #6
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Check the floor as well. Water hides there.

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Old 07-10-2015, 11:02 AM   #7
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That one, IMO and actual experience, is actually pretty easy. Whenever water is running down the screen, the leak is NOT the window nor it's frame. In order for water to get to the screen it has to run down the INSIDE skin as it overlaps the window frame. (in this case, wick to the inside of the window frame, through the insulation, as there is no inner skin) So the leak is higher than the window frame. Since you were stationary at the time look directly above and in line with the water drip line down the screen. I would start with the awning rail...look directly above the water line on the screen for gaps. Then look up at any other rivet(s) and/or marker lights directly above the water line on the screen. Since there are no ribs above the window, the water will pretty much follow gravity to the screen, even if some is wicked by the insulation up there.

I would check the joint of the clam shell to the white part of the roof, but in my experience, those leaks run to the sides, down to the floor where the clamshell meets the straight side.

This all assumes that you were level in both directions and stationary.
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Old 07-10-2015, 11:03 AM   #8
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Quote:
Originally Posted by dkottum View Post
Another stronger possibility is the awning support arm bracket mounting screws and rivets, seal around them and the pop rivet center holes.
This wouldn't show up as water running down the screen, IMO. Wet floor, yes.
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Old 07-10-2015, 11:07 AM   #9
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Quote:
Originally Posted by KJRitchie View Post
I have the trailer at home getting ready to go out for the weekend and it rained heavily last night. As precaution I placed a towel on the window by the latch and this morning it was slightly damp.

Looking from the latch straight up is the curbside clearance light above. Since the leak is flowing directly on the screen which is where the window is attached to the inner shell I'm suspecting the clearance light but also a curved panel is riveted adjacent. The top window caulking seems OK. I will inspect it better this weekend. I hope I find something there.

I may get some Captain Tolley's Cure and apply to those rivets and then reseal the clearance lights. The caulking looks good around the window. I suppose once I remove the clearance light casing if that is the leak point I should be able to detect moisture there. Is there insulation in that area. I would imagine it is wet.



So far no evidence of moisture under the dinette using my Sonin.

Kelvin
I think you're on the right track. Yes there is insulation there but no inner skin, depending upon model. It dries pretty readily as it is open to the back of cabinetry and their associated openings. I forget which model you have and can't see while on replying screen. May edit.....

I think your setup is just like mine in the rear.
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Old 07-10-2015, 11:52 AM   #10
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Kelvin, do you have a rear queen with overhead lockers and wardrobes? I went out and studied mine for awhile and want to add. Both of my leaks down the screens were side windows, so a bit different, as there is inner skin there. I believe there is a bit (couple inches) of inner skin above the top of the rear window, as that is where the locker lower rear edge is affixed to the wall. It is unlikely, but possible that if you had a leak in both the awning rail AND the top of the window frame, it could result in a drip down the screen.

It is also possible that you would have a water trail down the back of the curved locker wood back, on the backside of the panel. I wouldn't use a moisture probe on that nice wood, but it is very thin and you might be able to feel a damp "stripe" with very dry fingers. Also, if water is on the wood back, it appears to me that you would have some moisture on the thin strip of mouse fur above the window and below the locker. Kinda hard to see up in there with the valence in place.
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Old 07-10-2015, 11:57 AM   #11
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woops, I see in your signature line you have an FB. What is up above your rear window on the inside? Pic?
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Old 07-10-2015, 12:05 PM   #12
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Found an online pic. I think most all I said still holds, except you have no valence as you have drapes in back and a pano. I don't think either affect this particular leak any differently than my setup.
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Old 07-10-2015, 12:58 PM   #13
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I have over the dinette overhead cabinets with a back liner of some sort. The rear window awning was not deployed last night. I will see if there is any indication of leaking in the cabinet. Hopefully its the awning rail.

Can't go out this weekend. Our reservation at two sites at Mill Creek COE on Table Rock Lake were cancelled. We've had a lot of rain and Table Rock Lake is way up, enough to flood most of the sites and disable most of the upper ground sites due to electrical system damage. I'll have time to check everything out tomorrow, sunny and 92F while the trailer is at home.

Might add another washer to my Equalizer head and recalibrate the fresh water tank.

Kelvin
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Old 07-10-2015, 01:08 PM   #14
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Bummer. I can't fathom a reason that the awning deployed or not would make any difference.

I'm off bright and early Monday (babysitting GCs this weekend) to MI for 5 days of dry camping on the lake shore.
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