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freebeard · 10-09-2017, 04:11 PM

Have you seen the test where they drop bowling balls on various roof materials?

For me, it comes down to the fastening to the substrate roof and the overall shape of the structure. The latter isn't a warranty issue, the former should be.

10-09-2017, 04:11 PM	#12 (permalink)
freebeard Master EcoModder Join Date: Aug 2012 Location: northwest of normal Posts: 29,002 Thanks: 8,231 Thanked 9,003 Times in 7,437 Posts	Have you seen the test where they drop bowling balls on various roof materials? For me, it comes down to the fastening to the substrate roof and the overall shape of the structure. The latter isn't a warranty issue, the former should be.