No. The use of paints, coating, stains or other surface treatments do not meet the requirements to be classified as FRTW or to be used in an exterior setting, as outlined in the International Building Code (IBC), Sections 2303.2, 2303.2.3, and 2303.2.7.

The reasons are because surface-applied fire retardants are prone to damage (during transport, storage, & installation) as well as performance degradation (from UV & weathering), and do not provide the one-time permanent protection to all surfaces as required by the International Building Code.