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Old 11-21-2020, 10:54 PM   #1
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2017 27' International
Dadeville , Alabama
Join Date: Apr 2019
Posts: 13
Leak at bathroom vent, maybe?

Noticed water dripping above toilet near the pop up vent after some heavy rain in North Carolina about 3 weeks ago. Took a look on top and saw nothing unusual. No seam in roof near the vent for water to enter and the rivets near the vent looked good as well. There is a rubber seal of some type under the vent where it contacts the roof. Has anyone had any problem with a leak at the vent? Are there screws accessible from inside the bathroom so I might tighten the vent snugger to roof? I probably should call AS about a replacement seal as well.
Thanks
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Old 11-21-2020, 11:29 PM   #2
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2018 27' Flying Cloud
Easton , PA
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Might not be the fan vent, but the vent stack pipe. Many folks have had the same issue and the vent stack fix addressed it.

https://www.airforums.com/forums/f45...in-200768.html
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Old 11-22-2020, 09:38 AM   #3
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2015 30' Flying Cloud
Port Sanilac , Michigan
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Their should be a weather strip type gasket on the black/smoke cover. Some apparently were shipped with no gasket. Some the gasket has crumbled to dust. I pulled the cover from the roof side, two acres and replaced the gasket with 1/4 x 1/2 ish adhesive backed sponge weather stripping. Easy job. Should fix the leak.
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Old 11-22-2020, 09:39 AM   #4
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Two screws. Not acres.
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Old 11-22-2020, 09:45 AM   #5
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2019 25' Flying Cloud
Hendersonville , North Carolina
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Possible Pop Up Vent Leak?

On the roof the vent lid is held on by 2 screws. Remove them and take lid off. Remove the silly piece of foam tape in the lid (it is rubbish) and reinstall lid. If the leak was from the vent lid you are now all good. I removed that crappy little foam tape from both of my pop up vents on our FC 25 and no more problem. The lid now pulls down further when you close it from the inside resulting in more overlap of the lid up on the roof. I did this on our previous AS also.

I wash our AS fairly often and have pulled it in some pretty hard rain and no water gets in the vent lid. Easy fix.
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Old 11-22-2020, 09:54 AM   #6
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2020 25' International
minneapolis , Minnesota
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Quote:
Originally Posted by VeloBuckeye View Post
Might not be the fan vent, but the vent stack pipe. Many folks have had the same issue and the vent stack fix addressed it.

https://www.airforums.com/forums/f45...in-200768.html
I had the same issue and i fixed it the same way as in this link. You need to remove the two white vents and silicone the tapered pipe to the bottom of the vent. Heavy rain causes water to splash into the vent. The water goes down the vent and out of the gap between the pipe and vent. ...right into the ceiling!!!
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Old 11-22-2020, 10:18 AM   #7
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2018 25' International
Slidell , Louisiana
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As mentioned, it is possible the leak is elsewhere. Water can travel a fair distance on the inner skin before dripping out of a penetration or seam. My solar connector plugs warped in the hot sun and separated from the foam seal causing it to leak. the water traveled forward and down until it came out at the vent fan.

In addition to the vent stack as mentioned, Use a level on the inside skin and go uphill from the drip to identify all possible leak points. Use painters tape to tape off anything that could leak. then spray the trailer for 15-30 minutes with a wide spray nozzle and see if you have a leak. Gone? Untape a bit at a time and repeat untill you locate the source.
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Old 11-22-2020, 10:29 AM   #8
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2006 23' Safari SE
Lexington , Kentucky
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On mine there is a small piece cut out of the circular gutter at the top of the vent. When the AS is on flat ground, no problem, rain drains out that small cut and onto the shell. If you're parked on a slant where the street/port/left side is raised the rain goes over the top of that gutter and down the vent, past the fan and onto the floor. Last winter that happened to me, rain got past the vent cap and into the circular gutter, onto the vinyl and stained it. It was in storage and I didn't discover it until I checked on it a month later. It had never leaked before, heavy storms, snow... never. So I recommend replacing the gasket. I used EPDM material which should last a long time.
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Old 11-22-2020, 01:02 PM   #9
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2019 25' International
Washington , Washington, D.C.
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Once when there was a hard, driving rain, there were a couple of water drops on the floor in front of the toilet. I told a fellow ASer about it and he said not to worry about it, that it was the heavy rain that caused it. I checked the exterior vent seal and it looked good. Because I seldom use that vent, I left well enough alone. Every time it rains hard though, I go and check that spot and it has not reoccurred.
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Old 11-22-2020, 01:34 PM   #10
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Murfreesboro , Tennessee
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Leak in the Bath.

Had the same issue in my 2018 FC. Took it three times and didnít fix. They had tried to seal it. They sealed the inside and put a smoke machine inside. It turned out to be the vent stacks from the a black and grey tanks. Thank the factory ones off and throw them in the garbage and get you some replacements that are shaped like mushrooms that wonít allow rain to get in or bounce off the roof in a pouring rain. One of the vents is on a slight angle and itís not sealed to the pipe because of the angle an allows water to run down the side of the vent pipe into the sealing. Seal the new vents when you install them. Total cost for new vents and sealant about $30.00. Good luck. Itís Been almost 2 years and no problem since I replace the factor ones.
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Old 11-22-2020, 02:15 PM   #11
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Columbia , South Carolina
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Quote:
Originally Posted by Dlat View Post
Noticed water dripping above toilet near the pop up vent after some heavy rain in North Carolina about 3 weeks ago. Took a look on top and saw nothing unusual. No seam in roof near the vent for water to enter and the rivets near the vent looked good as well. There is a rubber seal of some type under the vent where it contacts the roof. Has anyone had any problem with a leak at the vent? Are there screws accessible from inside the bathroom so I might tighten the vent snugger to roof? I probably should call AS about a replacement seal as well.
Thanks

Had the same problem on my Serenity FBQ. Check your black tank vent flange. Mine was cracked I removed it, replaced, sealed it better than original seal job. No problems since then,
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Old 11-23-2020, 12:49 AM   #12
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2006 34' Classic S/O
Fort Worth , Texas
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I have had vents sweat in high humidity and the water drops collect and drip off. Thought I had a leak. I took the bathroom vent out and installed a Fantastic Fan.
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Old 11-23-2020, 09:58 AM   #13
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2019 27' Globetrotter
East Hills , New York
Join Date: Sep 2019
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I have/hd a leak dripping on toilet, near back of toilet on a 27 Globetrotter FB. I also had the weather stripping on the bathroom fan beak loose and was hitting the fan blades making noise. Colonial replaced the weatherstripping last week. Still under warranty so I didn't do it myself. They told me the leak was due to the bathroom fan weatherstripping. This remains to be seen if they used it as a convenient excuse or they actually checked it out thoroughly. Of interest is that they said they replaced the seal with their own 3M seal, not with the factory seal from Airstream. They said the seal Airstream uses on the fans is poor quality and they have problems with it. Hope this gives you some insight.

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Old 11-24-2020, 06:28 AM   #14
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2019 25' International
Washington , Washington, D.C.
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Just a BTW - when I had my orientation on new AS, the dealer told me that when I opened or closed the shower or bathroom vents, to always use a twisting action. So I did. This past season, the shower fan stopped working. I had the repair done locally which was to replace the weather stripping on the exterior which had come loose and looked a bit ragged when tech held it up to me. I mentioned to the tech how I was taught to open and close the vent and he said to stop doing that, open it straight up and down. Twisting it open and closed may have shifted/warped the outside weatherstripping. Always learning.
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