Will hail damage a standing seam metal roof? Watc the full video: https://www.youtube.com/watch?v=8_u4d0qe7as In this video we drop items on a metal roof to simulate hail damage to a metal roof and show you the results. In this test we drop big whiskey balls, golf balls, softballs, and two inch steel balls on standing seam metal roofing panels. Next, we show you the results so you can see if metal roofing can withstand hail. Our mock up for this hail damage video is built with 3/4" plywood with a sharkskin underlayment. The balls are dropped from a height of twenty feet. The 24 gauge standing seam metal roofing panels did not have any dents with any of the items except the steel balls. The steel balls dented the panels, but did not split the metal. The 26 gauge standing seam metal roofing panels have minor dents with some of the items . The steel balls dented the panels, but did not split the metal. In conclusion, if you live in a hail prone area, 24 gauge standing seam is a better option versus 26 gauge standing seam. What's The Impact Resistance Of Products: UL 2218 Class 4 Testing? UL 2218 Impact resistant is a standardized test and ranking system that's used on impact resistant roofing panels.