Roofing specifications often require an FM Global wind uplift rating that dictates the attachment, and a roofing subcontractor that does not read the rating is pricing the wrong system.
What FM wind uplift sets
FM Global, through FM Approvals, rates roof assemblies for wind uplift, and many specifications require a specific FM wind uplift rating that the roof system and its attachment must achieve. The Division 07 specifications set the FM rating, which dictates the fastening density, the insulation attachment, and the approved assembly the roofing sub must install.
Why the rating is easy to misprice
The required FM wind uplift rating and the approved assembly sit in the Division 07 specifications, not the title, and a higher rating means denser attachment and more labor. A sub that misreads the rating carries the wrong attachment and labor into the bid.
How an AI bid agent flags FM ratings
An AI bid agent reads each roofing package, flags the FM Global wind uplift rating, and surfaces the attachment and the approved assembly that drive the cost. The roofing sub prices the actual system.
You can see how the agent reads a roofing package in our AI bid agent demo for specialty trade contractors. It flags the FM wind uplift rating and the attachment it dictates so the system is priced.