Non-yellowing caulk recommendations

[Gordon Shumway]

I am nearly finished with construction of a new shed. I have a few more trim pieces to cut and install and then I'll need to caulk the necessary joints. I'm using white PVC for the trim (Versatex) so I won't have to paint it so I'll need to use white caulk.

I've had some caulk that has yellowed in a relatively short time but I don't remember what brand that was. Does anyone have any recommendations for a high quality, non-yellowing caulk?

Thanks

[Stormin Mormon]

I've found that Dap is Crap, and Dow is Wow. Not sure about GE.

Most silicone caulks do well, acrylic not as good.

[Doug Miller]

Please fix the configuration problems in your newsreader.

[Gordon Shumway]

Something strange is going on with NewsGuy. My original message appeared after I posted it -- as it should have. I then retrieved the body with no problem and then marked it to "Watch" this thread.

When I came back to this group just now I couldn't see my original message or Stormin Mormon's reply but I could find Doug's repeated plea to Stormin Mormon.

Has anyone had similar problems recently with NewsGuy?

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Stormin Mormon,

Thanks for the info.

[DanG]

I would NOT recommend any silicone caulk other than Dow Corning 795.

I have been using Titebond for Metal Roofs with very good results. It is a newer polymer technology, not a silicone or a polyurethane.

The metal roof formula has better adherence than the regular Weathermaster, adheres well to wet surfaces, sets under water, and cures to a great bond. Similar price to NP-1.

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Keep the whole world singing . . . Dan G

[Joe]

Yellowing is due to UV exposure, so contrary to opinion here, acrylics should do perfectly well since they are inherently UV resistant. Silicones are also UV proof, but there is a problem later if touch up painting is needed. Urethanes, can't comment, maybe someone in the trade has the facts.

Joe