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.
I'll gladly wade into the problems with Trex decking. See the attached photo that should open eyes regarding the rotting that takes place. My 1700 SF deck is 4 years old, and 10% of it is now worthless. I expect the rest of it will follow shortly. Having read a lot of the postings regarding the problems folks have had, I now completely understand why wood has to be the material of choice. It has a few centuries of historical usage, and I'm inclined to return to something that is at least predictable.
I have not seen such a bad mold infestation as you before. I am pretty sure that you should not attempt to remove it yourself. Now I know not to use Trex too. Thanks for the post! I would recommend you call a mold removal company for such circumstances.
11:07AM | 03/13/13
Our trex deck is covered in mold also. It is 3 years old this year. We have cleaned it every year according to the trex guidelines and it seems to just get worse every year. Wish we would have never purchased it!!
Mold and more three years old 20k worth of materials on DECKING Alone
12:12PM | 04/13/13
I thought thta the mold was just a isolated promble. How last week when I was at Home Deport turning to find a product to clean my deck.I was informed that there is a promble with molding on the trex decking materials. I'm really angry. I spent lots of money for my deck. My deck has mold, white spots ,and fadind.