Electrical gremlins and plumbing stacks... - Page 2 - Escape Trailer Owners Community

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Old 10-02-2017, 01:08 AM   #11
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Quote:
Originally Posted by dbailey View Post
Jim, I'm not sure what you're suggesting. I'll try some ascii art to explain the situation...

Code:
                 |-----------------------|  cap
                 |                       |
                 |  |     |     |     |  |
                    |     |     |     | 
                    |    X|     |X    | <- vent wall
  roof  ------------|---- |     | ----|--------------  
                          |     |
                          |     |
                          |     |ABS


The 'X' marks the location of the caulk that has failed. Without that caulk, water can run down the outside of the ABS pipe into the trailer instead of down the inside into the tank...


I wonder when we are washing the roof of the trailer ,using a sprayer , is water getting in the trailer ? Pat
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Old 10-02-2017, 07:57 AM   #12
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I understand now, I thought the joint was within the pipe going down inside, so my suggestion is now void. Sorry about that. But seems to me if you remove the cap, a good flexible sealant should allow movement without an opening and since it is not visible, just fill the entire space between the pipe and vent wall to insure coverage.
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Old 10-02-2017, 01:36 PM   #13
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Quote:
Originally Posted by cpaharley2008 View Post
I understand now, I thought the joint was within the pipe going down inside, so my suggestion is now void. Sorry about that. But seems to me if you remove the cap, a good flexible sealant should allow movement without an opening and since it is not visible, just fill the entire space between the pipe and vent wall to insure coverage.
I wonder if it would be a good idea to drill a small hole into the vent pipe to allow water that accumulates to drain down after applying the flood coat of sealant as you suggest?
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Old 10-02-2017, 01:39 PM   #14
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That may work, like me drilling a small hole in the bottom of my marker lights to dissipate condensation. Or you can wait and see if evaporation takes care of any water intrusion.
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Old 10-02-2017, 07:14 PM   #15
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Could you make an extension for the tube of caulk, something like a piece of rubber tubing?
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Old 10-02-2017, 07:36 PM   #16
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Originally Posted by cpaharley2008 View Post
I understand now, I thought the joint was within the pipe going down inside, so my suggestion is now void. Sorry about that. But seems to me if you remove the cap, a good flexible sealant should allow movement without an opening and since it is not visible, just fill the entire space between the pipe and vent wall to insure coverage.
That's my current thought. There isn't room to get a finger in there to form a putty, but something that I can manipulate with a small stick or chopstick would do the job. That's why I was interested in the notion of "liquid butyl" that Doug mentioned. I haven't looked around to see if I can find it locally, but now that I understand the problem I'm not in such a hurry.
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Old 10-02-2017, 07:39 PM   #17
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I wonder when we are washing the roof of the trailer ,using a sprayer , is water getting in the trailer ? Pat
I suspect so...

If you want to test, pull the cap off (rotate it 1/8 turn to release) and use a jug to pour a little water between the vent wall and the ABS pipe. If the water doesn't pool there, it must be leaking into the trailer.

I didn't get home in time to get photos before dark tonight, and I'm out tomorrow evening, but I'll try to do that some time this week.
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Old 10-02-2017, 09:40 PM   #18
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Quote:
Originally Posted by dbailey View Post
I suspect so...

If you want to test, pull the cap off (rotate it 1/8 turn to release) and use a jug to pour a little water between the vent wall and the ABS pipe. If the water doesn't pool there, it must be leaking into the trailer.

I didn't get home in time to get photos before dark tonight, and I'm out tomorrow evening, but I'll try to do that some time this week.
Doug still interested in your photo's . Confused exactly where . Don't understand why it couldn't be caulked . Will need to take a look but I see I think it is diclor around Vent. Sorry for my confusion . Pat
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Old 10-02-2017, 10:02 PM   #19
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Doug still interested in your photo's . Confused exactly where . Don't understand why it couldn't be caulked . Will need to take a look but I see I think it is diclor around Vent. Sorry for my confusion . Pat
The reason I can't use normal the caulking is simply that there isn't enough room. The place that needs caulk is 3 or 4 inches down in the gap between the ABS pipe and the side of the vent. And that gap is not wide enough to see what you're doing or to work the angle of the caulk gun correctly. Putty doesn't work because I can't get my finger in the gap to shape the putty.

Something thin enough to self-level and fill the whole space sounds like the right solution. If I can't find something liquid, I will try a large volume of normal caulk and use a stick or something similar to spread it around.
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Old 10-02-2017, 10:07 PM   #20
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I don't get it. If this vent is so common in the RV industry, there must be an easier solution.
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