Why not silicone? (Split from Forums 101) - Page 5 - Fiberglass RV


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Old 03-29-2015, 02:19 PM   #57
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Another product worth considering is Geocel Water Shield. While I would not use it to install windows (I prefer butyl tape), it has worked well for adding accessories such as antennas, light fixtures, etc.
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Old 03-29-2015, 03:58 PM   #58
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The magic word for temporary repairs is "Eternabond Tape" rather than duct tape.
But with a warning, if you take it off after 2-3 months it's hard to remove, if it stays in place a year, it's there to stay.....
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Old 03-29-2015, 04:19 PM   #59
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My Scamp is not even 3 yrs old and the Factory has resealed my roof vent twice! When it started leaking a 3rd time after just a few months again it was time for something different. I found a local boat repair guy who was willing to work on it. He was able to peal the silicone off in long strips. Said it wasnt even stuck everywhere. He used the 3M Marine Sealant he uses on boats below the water line. Says in underwater conditions it will last easily 5 yrs. but being on a roof esp on a trailer that is covered when not in use I may not have to reseal it for years and years. It stays flexible and is removable if it ever became necessary without leaving a residue. Only charged me $30 and took him a little over an hour to remove and clean all the silicone off. Just camped in a rain storm and drove through pounding rains and not a drop inside!!
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Old 03-29-2015, 04:36 PM   #60
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FYI, in the vintage trailer forums, Silly-Cone is also the bane of resto specialists.
They suggest butyl tape installation, and ProFlex caulk.


Here's the write up on ProFlex:
Developed specifically for RV use, ProFlex Flexible RV Sealant is more elastic than silicone sealants, and has superior adhesion as well. Tripolymer formula displaces water that might be hiding in seams and joints, and ensures a watertight seal. Bonds to virtually every RV material, even when damp, oily or frozen. Long lasting, durable and paintable. USA. Not recommended for use with rubber roofs.
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Old 03-29-2015, 04:45 PM   #61
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Isn't trial and error how Edison invented the light bulb? Nothing wrong with that. Raz
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Old 03-29-2015, 05:43 PM   #62
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Edison only did it that way because, in 1878 the phone had only been invented 2 years before and all he could get was 33 baud rate dial-up service and the internet only had seven addresses, and three of those were already "Adult" sites.


Engineers used to build bridges by trial and error, and more than a few failed. Now they study what others have already learned.


We can benefit from what others have learned, or we can try "Trial and Error" methodology, to each their own.
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Old 03-29-2015, 06:05 PM   #63
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Eternabond can be used for temporary repairs, but its intended use is for permanent repairs. On a roof vent, it should work very well.
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Old 04-01-2015, 08:15 PM   #64
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Silicone only has one useful place on an all molded towable. That's on the interior, if needed.

Silicone = Devil's Bane.

Anyone that tries to apply that stuff on my trailers, well... I have been known to ride a broom.
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