I have seen it stated by some folks that they will not use silicone caulk on their RV. Can someone please explain why?

Thanks!
Jeff

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2007 22T
2005 Explorer

Great post, Jeff. I'd like the answer too. I use silicone almost everywhere and find it superior to just about anything else. It never seems to fail, even when subjected to "flexing" or other movement. I tend to use the kind that can be painted over though, because that's what I normally do.

- Jack

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Hi-Lo 1707T
2005 F150 4x4 KR SCrew

I've always used Silicone on campers with no problems.

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2001 Towlite 24TD
2003 Chevy Avalanche Z71
Past campers: 1989 Funlite 21', 1997 TrailManor, 1979 Holiday Rambler MH., 1982 Palomino PopUP

Me too! I'm sure there are other products that work as well if not better.

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Great Wife, Joyce
2010 2310H Hi-Lo
2012 F150 4X4 SuperCrew EcoBoost w/Leer Cap
Reese WD Strait-Line Hitch
Amateur Radio K3EXU

I prefer not to use silicon caulking because it has no UV protection. UV rays breaks down the silicon which can cause the caulk to fail.

I use a polyurethane caulking commonly known as Sikaflex 1A for all my seams on the trailer since is has UV protection.

I stay away from tripolymer because it has rubber as an ingredient that tends to dry out and crack.

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Les

2006 22ft towlite (replaces 97 21TL)
2006 Toyota tacoma pre-runner 4.0 L V-6 quad cab
w/ 98 chevy Powervision towing mirrors