Slightly OT: engineered lumber for outside (deck framing) use?

This is a little off-topis for rec.ww, but I thought some folks here would be in the know, and would likely have opinions... :-)
I'm planning to build a deck this winter that will require some fairly long framing members, and of course, flat, strong, and cheap are always good characteristics. There are a lot of benefits to engineered lumber for typical frame construction--have any of those translated to exposed outdoor uses?
Thanks, Heath
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I think it depends on your finances. Engineered stuff is expensive as hell. I'd use pressure treated lumber for framing and engineered lumber for deck surfaces that are in view.
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If you're talking about I-joists and/or glue-lam, I haven't seen any rated for exterior use. The Georgia Pacific brand says they are treated with a sealant for only short term moisture protection. I wouldn't try using any of them outdoors without first checking with the manufacturer.
See: http://www.gp.com/build/product.aspx?pid 92#
--
Jack Novak
Buffalo, NY - USA
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