I chose Rhino Deck when I have my deck built nine years ago. though it was quite expensive I thought it would last many years and be more maintenance free than wood. However, the first year it formed a black mold and need to be power washed and treated every year. Then, the planks expanded never to contract causing water to stand on it. I had to have it replaced after just nine years at my cost because they said the 20 year warranty did not cover installer error. I am now out of all my money and hope no one ever buys their product!