I Accidentally Disturbed Asbestos — What Do I Do Now?

March 23, 2026 4 min read Emergency

⚠️ EMERGENCY STEPS

You were drilling a hole, tearing up old floor tiles, scraping a popcorn ceiling, or doing demolition — and now you realize the material might contain asbestos. Here's exactly what to do.

1
STOP
Do not continue. Put tools down. No sweeping, no vacuuming.
2
LEAVE
Exit room. Close doors. Turn off HVAC if accessible.
3
SEAL
Mist area with water spray. Wet towels at door gaps.
4
CALL
Licensed contractor: 608-218-4442 (24/7)

⚠️ Critical Warning

Do NOT use a regular household vacuum. Standard vacuums exhaust microscopic asbestos fibers into the air — making the contamination exponentially worse. Only HEPA-rated industrial vacuums designed for asbestos are safe.

What NOT to do after disturbing asbestos

Do NOTWhy
❌ Vacuum with a regular vacuumExhausts microscopic fibers through the air
❌ Sweep with a broomStirs up settled fibers making them airborne
❌ Use compressed air to blow dustDisperses fibers throughout the space
❌ Re-enter the room to "clean up"Each entry re-suspends settled fibers and exposes you
❌ Run the HVAC systemFibers enter ductwork and spread to every room
❌ Bag debris in regular trash bagsAsbestos waste requires labeled, sealed disposal bags
❌ Throw debris in your trashIllegal — asbestos waste must go to licensed facility
❌ Ignore it and hope for the bestFibers remain in the air for hours/days unless professionally controlled

How worried should I be about a one-time exposure?

A brief, one-time exposure to asbestos is generally considered low risk by medical professionals. The diseases caused by asbestos — mesothelioma, asbestosis, lung cancer — typically result from repeated exposure over months or years, not a single incident.

That said:

What happens when the professionals arrive?

  1. Assessment — they evaluate the type and extent of disturbance
  2. Containment — poly sheeting isolates the affected area, negative air pressure prevents fiber escape
  3. HEPA cleanup — industrial-grade HEPA vacuum and damp wiping of all surfaces
  4. Air monitoring — clearance testing confirms fiber levels are below safety thresholds
  5. Disposal — all waste is bagged, labeled, and transported to a licensed facility
  6. Documentation — you receive a completion report and clearance test results

Emergency Asbestos Response — 24/7

One Call 365 responds to emergency asbestos situations in Madison and all of Dane County.

608-218-4442