We purchased one lineal mile of Correct Deck in June, 2006. By the spring of 2007, we could tell me had a nightmare on our hands. We spent close to $32,000 with the installation of this deck. We have done everything the company has suggested and the problem of ugly mold continues. We continue to spend a lot of money having it power washed and anti-mold products and sealers. Nothing works!!! I have filled out the questionaire and sent pictures to the firm in San Francisco that may do a class action suit. It is interesting that the shadier spots on the deck are fairly clear of mold and the areas in the sun are the worse. Just the opposite of what you would think would happen. Tell everyone NOT to buy this product.