cedar would be great, naturally protective, smells good/cover scent.
don't use osb outside,
I'd be careful of using treated ply....I'm sure those chemicals smell and not to mention they're not healthy for you.
could use reg ply and just cover the entire exterior in cedar shakes...something along those lines...
you may be able to buy cedar shake siding which looks like individual cedar shakes but it comes in sheets, they now make this look in some kind of composite/concrete type siding, which would last forever just about, think you can order it in any color too just about.
Last edited by salukipv1; 03-03-2011 at 01:01 PM.