I would not recommend correctdeck decking - the mold problem is terrible and I am not satisfied with the companies response. The CS person immediately questioned the installation on the deck - I have pictures - the deck looked perfect when first installed. It is all spaced properly, there is hardly a tree around to drop leaves, it sits in the sun for 10-12 hours a day and the mold just grows and grows...
I did what they recommended - used a mild cleaner and power washed it - within a week you could see the black spots returning and now they are even worse than before! It does look HORRIBLE. It might be worth exploring a class action suit!