"Bill" wrote in message
If you want to seal it you can try Cetol (by Sika), or some equivalent. It
is pricey , but it will hold up to the UV and water. This is more like a
varnish than oil. Again, you have to do it often and should start with
multiple coats.

If you want to use Cetol, get the Cetol light. I used the regular marine
grade and it darkened the cypress more than I liked. It actually hides the
grain like a stain more than like a clear poly or oil finish The "light" is
not supposed to darken as much.

Penofin oil is supposed to be good also. I used it on some mahogany this
years. Since it has only been maybe 6 weeks, I'm reluctant to say how good
it is long term. It does look good and does not cover or block the grain
like the Cetol did. The Penofin does have UV blockers. They do have a web
page with more information.
Ed