Hi and thanks for the question!
Manufacturers vary in the fastener locations. Testing, approvals and evaluations may be based on a particular location.
I recommend that you contact the manufacturer for their input on fastener location.
Regards,
David Stermer
David Stermer
2013-04-29 09:05:35.000000
installing a g-rib panel and havent a clue where to place the screws, valley, small 3/4 bump or on the flat part??