Dry-Sponge Soot Cleaning Takeoff and Seal Coat
Turns soot-affected wall and ceiling area into the chemical sponges, labor hours.
Example
You enter
- Soot-affected wall + ceiling area (ft²) 1200
- Area per chem sponge before fouling (ft²) 100
- Dry-sponging production rate (ft²/hr) 150
- Seal coat 1
- Primer coverage (ft²/gal) 300
You get
- Chem sponges 12
- Dry-sponging labor 8 hr
- Sealer (gal) 4
Details, formula, and sources
Turns soot-affected wall and ceiling area into the chemical sponges, labor hours, and odor-seal primer the dry-smoke cleaning phase consumes: sponges from a per-sponge coverage, labor from a production rate, and primer gallons from a coverage rate. The residue type governs the method, so dry sponging is for dry smoke; protein, wet, and fuel-oil residues need wet cleaning. A quantity screen for a fire estimate, not a cleaning protocol. IICRC S700 governs.
dry_sponges = ceil(affected_sf / sponge_coverage_sf); labor_hours = affected_sf / production_sf_per_hr; sealer_gal = seal_coat ? affected_sf / primer_sf_per_gal : 0.
Dry-sponge soot cleaning takeoff and the 300 ft^2/gal primer coverage, by name; ANSI/IICRC S700 fire and smoke restoration. Field-takeoff arithmetic, not edition-bound.
The takeoff is public estimating arithmetic; the dry-sponge method and the residue-type guidance are named in the published IICRC S700.
Estimate. AHJ and licensed professional govern.
Field names used by the API: affected_sf, sponge_coverage_sf, production_sf_per_hr, seal_coat, primer_sf_per_gal, dry_sponges, labor_hours, sealer_gal
- Per-sponge coverage a chemical sponge fouls and stops lifting soot after a coverage area; heavier soot lowers itANSI/IICRC S700
- Primer coverage 300 ft^2/gal odor-seal primer is a starting rate; the product label governsmanufacturer label