Or copy this URL:
https://www.metalroofing.com/spirit/comment/8810/find/
This will vary from panel to panel based upon design and testing. Certainly anything that penetrates the decking is fine. However, to get more detailed than that, you need to check with the roofing manufacturer. I am sorry I cannot be of more help.
10/19/2006
Isaiah Industries, Inc.
10/19/2006