On Thu, 16 Aug 2012 09:29:22 -0500, dpb wrote:

If there's some room in the budget, you could go w/ the Azek or other
varieties of trim lumber to provide rot-impervious material.

Or make the frames of cypress and the sheathing of cedar. Don't use
cedar for the frame because it doesn't have a lot of screw holding power.

--
Intelligence is an experiment that failed - G. B. Shaw