CORRUGATED METAL ROOFING Universal design works as a hinge to fit all profiles. North-South adjustment allows for ease of installation, and 5 fastener points ensure optimal strength. Pre-applied gasket tape prevents leaks. Attaches to the side of the ribs, not in the valley, where water flows and moisture accumulates. Ideal for both commercial and residential applications, with a strong pullout value. See it in action as seen at Intersolar 2014.