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Old 07-04-2019, 12:55 PM   #1
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Replacing gutter spout

The cover on my camper was too tight in a corner and it distorted/unsealed one of the gutter spout extensions.

I have new spouts on the way. What sealant should be used when I put the new spout in.

Regular silicone?
Non leveling lap sealant?
Some other special sealant?

It looks like the old one has plain silicone on it
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Old 07-04-2019, 01:09 PM   #2
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NO to silicone.

Use what they use........Geocell Proflex
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Old 07-04-2019, 02:40 PM   #3
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I bought the gocell proflex.

Already used silicone to make the old one work while the parts on order are enroute. From reading it sounds like that was a mistake. I guess Iíll have to do some scraping to get the silicone off
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Old 07-07-2019, 08:00 PM   #4
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Just to update for future readers. The Geocell proflex RV sealant was some good stuff, definitely the right product for the job. I pulled the old gutter spouts and cleaned up all the silicone sealant with a plastic scraper and mineral spirits which worked well. I noticed the silicone did not adhere well to the plastics. One clean I put a shot of geocell in the opening theyíd put the new spout. I taped off the edges and caulked it in real nice. While I had a fresh tube I touched up any areas that looked thin on any of the outdoor accessories like speakers, railings etc.

Then I noticed the sealant where the rubber roof membrane folds under the gutter rail looked spotty and thin. I taped off the gutter and used some Dicor lap sealant to run a fresh bead. Looks great.

Just fyi for future readers, the geocell pro caulk specifically says not to use on rubber roof membranes.
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Old 07-07-2019, 08:58 PM   #5
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Quote:
Originally Posted by Sweedish15 View Post
The cover on my camper was too tight in a corner and it distorted/unsealed one of the gutter spout extensions.

I have new spouts on the way. What sealant should be used when I put the new spout in.

Regular silicone?
Non leveling lap sealant?
Some other special sealant?

It looks like the old one has plain silicone on it
I use this instead of silicone. This stuff is great, far superior than silicone.
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