Short answer: the FR version is rated Class A under ASTM E108 for exterior fire exposure. It does not make the roof non-combustible, it does not cover fire under the palapa and it does not replace the permit.
A palapa is seen from three distances. This is how a NIPA roof is designed for each one, and how to plan the renovation of the palapa your hotel already has.
Guests see one ensemble; the operations team manages dozens of roofs of different ages. How to plan synthetic cana thatch in phases, with the hurricane season on the calendar.