Recycled Plastic Tongue and Groove boards or planks leave any wooden T&G product in the dust for longevity and cost of maintenance. This product doesn't need any and will last at least 5 times longer than any treated wood product. Use wherever you might normally use wood, concrete, or metal.
Steel reinforced recycled plastic tongue and groove that will never need paint or preservative. Very tough industrial quality. But if you don't need the reinforced inner you can try the sister product without reinforcement.