This is pretty darn clever, and credit must be given where its due. My neighbor, Paul LaCivita, had been saving his above-ground, metal pool sides for years now, and kept saying, you should use this stuff for flooring or roofing. Well, we finally put it to use, and while its look as flooring might not appeal to all (note: in the photo its not cut to fit or held down with trim yet), it would make for a very decent roofing material for a shed, cabin, tiny house, or wood bin. Better yet, people toss out above ground pools ALL THE TIME, or give them away on craigslist, so its not like its a bank breaker!
It IS made to be durable and waterproof.
-Derek "Deek" Diedricksen