Sprayed fireproofing — the fluffy or cementitious coating applied to structural steel beams, columns, and metal decking to slow the spread of fire — commonly contained asbestos in buildings constructed before the mid-1970s, when spray-applied asbestos fireproofing was largely banned. It is a leading source of asbestos exposure in commercial and institutional buildings.
The Biggest Clues
- Location: on structural steel beams, columns, and the underside of metal floor/roof decking — usually above suspended ceilings, in mechanical floors, parking structures, and stairwells.
- Appearance: a rough, sprayed-on fluffy, popcorn-like, or matted fibrous coating, often gray or off-white; some cementitious versions are harder.
- Age: buildings built or steel-framed before ~1975 are the prime suspects.
Only laboratory testing of a sample can confirm asbestos content.
Why It Is High-Risk
Sprayed fireproofing is typically friable — it releases fiber readily when bumped, abraded, water-damaged, or disturbed by trades working above the ceiling. Because it sits on structural steel throughout a building, any work in ceiling plenums, on utilities, or during renovation and demolition can disturb it.
What to Do
- Don’t disturb, scrape, or dislodge sprayed fireproofing.
- Test a sample before any work above the ceiling or on the structure.
- Use a licensed abatement contractor for removal or repair.
Occupational Exposure
Construction workers, sandblasters (who blasted it off steel), electricians, and demolition and abatement workers who applied, worked around, or removed sprayed asbestos fireproofing were exposed to the fiber it released.
If you were diagnosed with mesothelioma, asbestosis, or another asbestos-related disease and were exposed to asbestos while applying, working around, or removing sprayed fireproofing, you may have a legal claim.
This information is published by an independent media organization — not a law firm — and is educational only. It does not constitute legal advice or provide legal services.