Before you make a decision, you should consider the serious flaws of Trex decking. I can show you photos that will make you weep. In 2007 I installed a very extensive Trex deck (deep red color). Within 6 months I had black mold covering the entire surface. (I previously had a wooden deck that never had mold problems.) This deck gets so hot in the sun that we cannot walk barefoot on it. We have to lay runners for the dog to get from the yard to the patio door! The mold is very difficult to remove and it looks disgusting. We tried the Corte-Clean Composite Deck Cleaner (recommended by Trex as a eco-friendly, non bleach product). It is extremely labor intensive and it must be done every few months. The floor of the deck is now light red streaked with white (and specks of mold) while the rails remain deeper red. You don't even want to lean against the top of the rail or set your beverage on it because of the scary mold. If my contractor had spoken the truth about Trex, I would have replaced my deck with another wood one. Staining a wooden deck once a year no longer seems like such a burden.