Well, you need a sealer that can be painted over. It won't protect the wood forever but depending on your humidity, it should last awhile. Kilz is the only thing I can think of that could be painted on easily. So I don't know for sure how long the wood would be preserved. Mine might be sheltered by my porch, or a tree and that would protect it for awhile, but not for years. So I'm just taking a chance on Kilz because it is easy to paint over. I am going to use outdoor acrylics, though, just so the paint will last longer. And outdoor acrylics don't necessarily have to have a sealer coat. They are sealers in themselves. I figure with the kilz and the outdoor acrylics, it stands a better chance of lasting through the elements, for a few years maybe.
