What the work is
Thin-film intumescent coatings give exposed structural steel a one, two, or three hour fire rating without wrapping it in board or spray fireproofing. Under heat the film expands into a char that insulates the steel. Architects specify it where the structure stays visible: arenas, lobbies, schools, healthcare, retail, and parking structures.
The rating is only as good as the paperwork behind it. Every listed assembly ties a specific product, primer, film thickness, and topcoat to a specific steel section size. Getting the film on the steel is the easy part. Proving it is the job.
How Corazon runs it
- Submittals matched to the listing. Product, primer, and topcoat submitted against the UL or Intertek design named in the spec, with section-by-section thickness schedules before the first coat goes on.
- Surface preparation and primer compatibility. Shop primers verified against the manufacturer's approved list, or removed and replaced where they are not.
- Film thickness logged per member. Wet and dry film readings taken and recorded by member, not by area, so the inspector and the owner get a log that maps to the framing plan.
- Third-party inspection coordinated. Hold points scheduled with the owner's special inspector so nothing gets covered before it is read.
- Closeout for the AHJ. Thickness logs, product data, and the listing in one package for the authority having jurisdiction and the owner's binder.
Where it goes
Interior-rated and exterior-rated systems for exposed columns, beams, trusses, and roof deck framing. New construction and retrofit, including occupied buildings where work runs nights and phases.
Recent example: the roof deck and structural steel at Reed Green Coliseum in Hattiesburg. See it on the Work section.
