Spray fireproofing would mean spraying any substance in such a way that it covers properly a particular surface to make it fire-resistant. The technical name of this spray is SFRM that stands for Sprayed Fire-Resistive Material.
Generally, it is used as a strategy for passive fireproofing for your building. Spray applied fire-proofing of PDQuipment may have certain acoustical and thermal properties that control condensation. Its main use, however, is to insulate steel and metal decking to prevent high temperatures during a fire.
People knew for many years that any structural steel fails very quickly when it is heated by fire. After a short time, building codes will need the protection of any structural steel in a certain fire-resistive building, and they have rated the protection level as they did for any fire division walls that can be 1-hour, 2-hour, and so on.
The oldest form of protection that was available was to encase the entire steel beams and columns in terra-cotta i.e. baked clay tile, masonry, or concrete. Later on, gypsum plaster was used by applying them to wire lath that was used, for reducing the weight of your fire protection.
For reducing the labor needed for installation there are multiple layers of any gypsum drywall boards were also used. Even today, this method is still used for insulation.
While applying any fireproof coating to any of these structures, it will be very important for the material that should dry up within a certain specific amount of time. Some of the fireproofing sprays may contain chemical accelerators for speeding up hardening, but they can still produce a sufficient amount of moisture while the application process will continue.
Incidentally, any fire-resistant material will be more difficult to get dry as compared to drywall or cement. Any contractor may often face delays or create unintentionally safety risks without the proper ambient conditions and construction drying services.