I just bought a warehouse house for my company and it needs a new roof, it's aprox 62'x'120 and was looking at metal roofs, it is a rounded roof, can i use a metal roof, it has apox 6 up on the bend so 31 up. anyone have any great ideas for roofing besides metal or is this the best, it has rolled roofing right now and it is coming off. thanks for the tips