Fireproofing Calculator
Calculate spray-applied fireproofing material volume, weight, bag count, and cost for cementitious or fiber-type SFRM applications.
Inputs
sq ft
in
hr
Results
Fireproofing Weight
9,375 lbs
Material Volume625 cu ft
Bags Required188
Coverage Rate26.7 sq ft/bag
Material Cost (est.)$16,875
Labor Hours (est.)14.3 hrs
How to Use This Calculator
- Enter the total steel surface area in sq ft to be fireproofed (measure all exposed beam and column flanges and webs).
- Set the required thickness in inches from the UL-listed assembly (typically 0.5–3 in depending on W/D ratio).
- Enter the fire resistance rating in hours (1, 2, 3, or 4) required by the building code.
- Select the fireproofing type: 1=cementitious SFRM or 2=mineral fiber SFRM.
- Read Bags Required and Coverage Rate to order materials; use Material Cost for budget planning.
- Note Labor Hours to schedule application crews — spray fireproofing is typically applied after structure is plumb and bolted.
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