I would use an exterior product, like a UV oil

 

I was wondering about Sikkkens Door&Window. That has become our go-to product for exterior wood doors whenever possible.

 

We bid a job similar. I called our BM rep and he told me what to use but we never got the job and it was a few years ago so I forget the product.

Try your paint reps (Not the paint store help but the MFG reps)

 

Thanks for all the input guys.

I called some reps and window companies and talked to their finishers there. I'm hearing a lot of recommendations for spar varnish. Keeping in mind these windows are all metal clad on the exterior and cedar on the interior, they don't get much direct sun or liquid moisture.

 

We switched from spar to the Sikkens D&W because no one ever seemed to maintain the spar in a timely fashion. By the time they wanted anything done, it was so far gone that it meant stripping all the failed finish and starting over,

 

I wonder if zar might be a good option? It's waterbased (there are oil options though)and uv resistant. Should be easy(ier) to maintain. The epa continues to move us to these types of finishes, may as well go now cuz they'll be obsolete sooner than later... as an alternative, I very said it before in other threads, I like minwax ' s hybrid floor finish. Super durable, and several other good qualities. Not sure about uv though. Worth looking at anyway and not a bad price comparatively.