I need to build a new shed, approx 8x8, to house our water system pressure tank and other misc. stuff. My wife admires an old shed she saw while traveling that was roofed and sided with corrugated steel - the old-fashioned kind with the evenly-spaced "hills and valleys". I've never worked with this stuff before. Can it be cut with a 7 1/4 circular saw? What about the roof ridge? If I put it over plywood sheeting do I need ventilation? Would that create a great home for mud daubers and rodents? Ant tips on trimming it out? As you can tell, I don't have much of a clue. But folks have been using this stuff for years and it's on a whole bunch of country outbuildings. My internet searches for info take me to manufacturers of fancy new steel "roofing and siding systems". I'm just looking for tips on how to put up the ripply silver stuff. Or is it even a good idea?