Good Sam Club Open Roads Forum: Travel Trailers: Silicone
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ScottG

Bothell Wa.

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Posted: 07/12/18 07:53pm Link  |  Quote  |  Print  |  Notify Moderator

Never silicone where the sun's UV can get to it. You friend will soon have a mess to clean up when it yellows and starts letting go.


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Houston

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Posted: 07/13/18 10:17am Link  |  Quote  |  Print  |  Notify Moderator

OSI Quad is pretty easy to find at Home Depot and works well on the vertical surfaces. I usually carefully go over the area with some Goof Off Pro Strength to soften and remove the old caulking. Then I'll go over the area with OSI Quad.

LVJJJ

NW WASHINGTON

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Posted: 07/14/18 09:25am Link  |  Quote  |  Print  |  Notify Moderator

I repeat, NO SILICONE !!!

It eventually separates and pulls away from the seam. Then it will actually trap water underneath it. This had happened to the last two used TT's I bought and had to spend hours taking it all off, WD-40 will help loosen it, then use a razor blade bendable knife to scrape it off. Silicone over old caulk is even worse. I've used Proflex and its good but am now using Sikiflex 221, a marine caulk. use self leveling Dicor on the roof


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GeorgiaJim

Georgia

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Posted: 07/14/18 11:24am Link  |  Quote  |  Print  |  Notify Moderator

Has anyone used the new polyurethane caulk?

mike-s

Michigan

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Posted: 07/14/18 11:47am Link  |  Quote  |  Print  |  Notify Moderator

GeorgiaJim wrote:

Has anyone used the new polyurethane caulk?
I use Sikaflex 221, but it's not "new." I find it much easier to apply than Proflex, and it doesn't stay sticky and attract dirt.

cccougar

Cherry Hill

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Posted: 07/15/18 07:46am Link  |  Quote  |  Print  |  Notify Moderator

Thank you for the input. I will be working on this for the first time this week.

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