Secondary Moisture Barrier

I’m looking for when the Florida Building Code was changed to require secondary moisture barriers on roofs. What was the date and applicable code?

The definition of SWR in the FBC does NOT meet the requirements of SWR on the 1802.

For the 1802, it is the SWR in addition to what is in the FBC. Applied to the joits b/n the decking, etc.

Oct. 2007 was the date for SWR on all re roofs. That date does not apply to new construction. Which in my opinion does not make sense.