bugsnthings@sbcglobal.net
it doesn't matter if your patio is covered, there's still moisture in the air, the only i heard of was to place in a plastic casing, that's just my opinion,maybe there is a way.good luck

John D
You don't say how it is framed, which makes a big difference. You could try to varnish the existing frame, but it's probably not really suited to being outside. I suggest you have a water-proof shallow glass-fronted cabinet made and hang your framed artwork inside that. Something similar to the notice board cases that churches and community centres use would suit. That way, you can always move the artwork back indoors if you change your mind.