The problem I am have is the deck is already done and I want the roof as high as posible. I was thinking of using the something like the pvc roof used on greenhouse and pizza huts roof. My thought is to screw it to thedeck next to the house and have fall slightly to the end of the deck. The shed when finished will be approx. 19' x 19' complete w/ sink, work bench, tv and all the extras. Just want to make sure that it is right the first time.