Incident response
The first hour after suspected asbestos disturbance.
When a contractor cuts into a wall and finds a suspect material, or a ceiling collapses onto a corridor, the first hour decides how many people are affected. This flowchart is the response our consultants brief every facilities team on.
Overview
Why this exists.
Speed matters, but panic makes things worse. The steps below are ordered to contain the incident, protect occupants and preserve the evidence needed for testing and reporting.
Every duty holder should have this workflow printed and displayed near the facilities office. When an incident happens, no one has time to Google it.
The explainer
Suspected disturbance
- Step 1
1. Stop work
Halt all activity in the room and the corridor outside. Nobody in or out.
- Step 2
2. Evacuate & isolate
Move occupants out, lock door, tape off, post signage.
- Step 3
3. Identify exposure
Log names of anyone who was in the space. Record clothing, PPE, duration.
- Step 4
4. Call consultant
Ring your asbestos consultant. Emergency sampling attends same day.
- Step 5
5. Preserve debris
Do not clean or disturb. Photograph in situ. Sampling occurs in-place.
- Step 6
6. Test
Bulk sample sent for UKAS 17025 PLM. 4-hour turnaround available.
- Step 7
7. Decontaminate
If positive, licensed contractor performs clean-up and 4-stage clearance.
- Step 8
8. RIDDOR & medical
Notify HSE, arrange medical surveillance for exposed persons, retain records 40 years.
How to read this
- Steps are strictly sequential — do not run them in parallel.
- Red steps are legally required (RIDDOR, HSE notification, medical surveillance).
Key takeaways
Isolate first
Nothing else matters until the affected area is cleared and physically closed off.
Preserve, don't clean
Do not sweep or vacuum. Debris is evidence and must be sampled before removal.
RIDDOR clock
Reportable incidents must be filed within 10 days — start the paperwork on day one.
FAQs
Common follow-up questions.
Do I always need to notify HSE?
Any dangerous occurrence involving uncontrolled release of a substantial amount of asbestos is a RIDDOR-reportable event under Schedule 2.
What counts as substantial?
HSE guidance treats visible dust deposits or debris fields as substantial. When in doubt, report and let HSE close the file.
Explore further
Related guidance
Guide
Independent Asbestos Guidance for NHS Trusts & Healthcare Estates
Independent, conflict-free guidance for NHS Trusts, ICBs and private healthcare estates — HTM-aligned surveys, ward reinspections and clinical refurbishment.
ReadGuide
Independent Asbestos Guidance for UK Homeowners
Independent, plain-English asbestos guidance for owners and buyers of UK homes — covering pre-2000 stock, surveys, sampling, costs and emergency disturbance, from the UK's Fastest-Growing Independent Asbestos Consultancy.
ReadGuide
What Happens If Asbestos Is Found?
Finding asbestos is not an emergency. Learn the sensible next steps — from documentation to management, monitoring or removal.
ReadGuide
Independent Asbestos Guidance for Managing Agents & Block Managers
The dutyholder position for common parts, Section 20 mechanics for register-driven works, template leaseholder letters and the reactive-contractor controls that stop out-of-hours incidents.
ReadGuide
Asbestos Insulating Board (AIB) Guide
Why AIB is one of the highest-risk asbestos products in UK buildings — how to identify it, its locations, and the licensed removal regime under CAR 2012.
ReadGuide
Healthcare Asbestos Regulations
How CAR 2012 applies to the UK healthcare estate — NHS trusts, private hospitals, GP surgeries, dental practices and care homes.
Read