So this underdeck shed will be subject to rain and water I take it?
if you are putting plywood down on the joists, you should create a slope with sleepers, and then put your plywood down. If you put down deckboards with a proper space between each board, then you do not have to worry about water pooling, like you do with the plywood. Hence the need to create slope.
if you are putting plywood down on the joists, you should create a slope with sleepers, and then put your plywood down. If you put down deckboards with a proper space between each board, then you do not have to worry about water pooling, like you do with the plywood. Hence the need to create slope.