spacing of screw rows over ...: "I work with a crew who often installs metal roofing ..." - David Crust (1/17/2013) | Installation

I work with a crew who often installs metal roofing panels on new roofs. The roofs are sheathed with 1/2" or 5/8" plywood and covered with synthetic roofing felt, then steel panels applied over this. My query is considering that the roofing panels are fully supported, unlike a purlined system, can the the frequency of screw rows be further apart than the usual 2" O.C.? I did some online research on this but found all the recommendation were referencing purlin-supported steel panels.		David Crust 1/17/2013	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18033/find/
You would need to check with individual roofing panel manufacturers to be certain but I do not believe that using decking reduces the need for fasteners.		Todd Miller Isaiah Industries, Inc. 1/18/2013	Share Or copy this URL: https://www.metalroofing.com/spirit/comment/18034/find/

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spacing of screw rows over plywood