If you have just broken or drilled into asbestos: clear the area immediately, close doors and windows, and call us on 07345 062075. Do not re-enter the area.
I Found Asbestos —
What Do I Do Now?
Discovering asbestos in your home or building is unsettling, but the material itself is not the danger — disturbing it is. This guide walks you through the immediate steps, how to assess the risk, and what the law requires you to do next.
What Should You Do? Use This Decision Tree
Answer each question honestly. The tree will tell you whether you need to evacuate, arrange a survey, manage the material in place, or take no immediate action.
Has the material been physically disturbed, broken, drilled, cut, or damaged in any way?
Even a small break in an asbestos-containing material can release fibres into the air. If you are unsure, treat it as disturbed.
The Five Immediate Steps for Any Discovery
Regardless of the material type or condition, these five steps apply the moment you suspect or confirm the presence of asbestos.
Stop all work in the area
If you are in the middle of any task near the material — drilling, cutting, sanding, or even sweeping — stop immediately. The risk comes from disturbing fibres, not from proximity to intact material.
Assess the condition without touching it
Look at the material from a safe distance. Is it intact and firm, or crumbling, flaking, or visibly damaged? The condition determines the urgency of your next step. Do not prod, scrape, or sample it yourself.
Restrict access to the area
Keep other people — especially children — away from the material until you have a professional assessment. If the material is damaged, close the room and tape across door gaps to limit fibre migration.
Do not clean up dust or debris
Sweeping or vacuuming asbestos dust with a standard household vacuum spreads fibres rather than containing them. Only a HEPA-filtered Type H vacuum operated by a trained contractor is appropriate.
Arrange a UKAS-accredited test or survey
If you have not confirmed the material contains asbestos, arrange a bulk sample test. If the material is damaged or you have building works planned, a management or refurbishment survey is the appropriate next step.
Condition Assessment: Risk by Material State
The condition of the material determines the airborne fibre concentration and the urgency of your response. This table summarises the evidence from Obmiński (2020, 2023) and the HSE's own guidance.
| Material Condition | Typical Fibre Level | Risk Level | Recommended Action |
|---|---|---|---|
| Intact, undamaged, inaccessible location | < 300 f/m³ | Low | Manage in place, label, monitor annually |
| Intact but accessible — risk of future disturbance | < 300 f/m³ at rest | Low–Medium | Management survey, consider encapsulation |
| Damaged non-friable (e.g. cracked cement sheet) | > 1,000 f/m³ | Medium | Management survey, repair or removal |
| Damaged friable (e.g. crumbling AIB, pipe lagging) | Exponential increase | High | Restrict access, licensed contractor immediately |
| Accidentally disturbed or broken | ≈ 7,000 f/m³ initially | Very High | Evacuate, emergency decontamination required |
Sources: Obmiński (2020) Construction and Building Materials; Obmiński (2023) Scientific Reports; Bowen et al. (2017) Annals of Work Exposures and Health.
Management in Place vs Removal: Which Is Right?
HSE policy is clear: removal is not always the right answer. For intact materials in low-disturbance locations, management in place is both legal and appropriate. The decision depends on condition, location, and future plans for the building.
When to Manage in Place
- ✓ Material is intact, firm, and not crumbling
- ✓ Located in an inaccessible or low-traffic area
- ✓ No building works planned in the vicinity
- ✓ Condition can be monitored annually
- ✓ Removal would cause greater disturbance than leaving it
Undamaged ACMs in good condition maintain fibre levels below 300 f/m³ for 10–20 years. Poorly executed removal can increase contamination by 1,700–2,700 f/m³ for one to two years (Obmiński, 2023).
When Removal Is Necessary
- ✗ Material is damaged, crumbling, or friable
- ✗ Building works will disturb the material
- ✗ Material is in a high-traffic or accessible location
- ✗ Condition is deteriorating on annual inspection
- ✗ Full demolition of the structure is planned
When removal is necessary, only an HSE-licensed contractor may carry out the work for licensed materials. A four-stage clearance inspection is required before the area is reoccupied.
Not sure which applies to your situation? A management survey will give you a condition score, a material type identification, and a professional recommendation. Read our guide on encapsulation vs removal for a detailed comparison of the options.
Which Survey Do You Need? Choosing the Right One
The type of survey depends on what you plan to do with the building. Each survey type has a specific legal trigger and scope.
Management Survey
When: Occupied building, no works planned
Identifies all reasonably accessible ACMs and assesses their condition. Forms the basis of an asbestos register and management plan. Required for all non-domestic premises.
Learn moreRefurbishment Survey
When: Building works or renovation planned
Fully intrusive survey covering the scope of planned works. Accesses concealed voids and ceiling spaces. Required before any work that could disturb ACMs.
Learn moreDemolition Survey
When: Full demolition planned
Covers the entire structure. Required under CAR 2012 and CDM 2015. Includes a demolition specification and pre-construction information pack.
Learn moreFour Mistakes That Make Things Worse
These are the most common errors made after asbestos is discovered. Each one either increases exposure risk or creates a legal liability.
Sweeping or vacuuming the area
Standard household vacuums do not filter asbestos fibres — they exhaust them back into the air. Only a HEPA-filtered Type H vacuum operated by a trained contractor is appropriate for asbestos dust.
Wrapping or taping the material yourself
Attempting to seal damaged asbestos with tape or plastic sheeting requires handling the material, which releases fibres. Encapsulation is a specialist task that requires appropriate PPE and controlled conditions.
Proceeding with building works without a survey
Starting refurbishment or demolition without a survey is a criminal offence under CAR 2012 Regulation 5. It also exposes contractors to uncontrolled fibre release — short-term power-tool work on asbestos cement can generate 13.23 f/mL, 132× the control limit (Phanprasit, 2017).
Assuming the material is safe because it looks intact
Visual inspection cannot confirm whether a material contains asbestos or assess its internal condition. Only a UKAS-accredited bulk sample test and a professional condition assessment can do this reliably.
Frequently Asked Questions
QI found what looks like asbestos — should I panic?
Not immediately. Asbestos that is intact, undamaged, and unlikely to be disturbed poses a very low risk. The danger arises when fibres become airborne through disturbance, damage, or deterioration. Leave the material alone, confirm whether it contains asbestos through a UKAS-accredited test, and then decide on the appropriate management approach.
QHow do I know if a material contains asbestos?
You cannot identify asbestos by sight alone. The only reliable method is bulk sampling by a UKAS-accredited laboratory. A surveyor takes a small sample of the material and sends it for analysis. Results are typically returned within 3–5 working days. Any material in a pre-2000 building that you cannot confirm is asbestos-free should be treated as if it contains asbestos until tested.
QCan I leave asbestos in place and not remove it?
Yes, in many cases. HSE policy states that ACMs in good condition and unlikely to be disturbed can be managed in place. Undamaged materials in good condition maintain airborne fibre levels below 300 f/m³ for 10–20 years. The material must be labelled, inspected annually, and recorded in writing. If the condition deteriorates or any work near it is planned, a management survey must be arranged.
QWhat should I do if I accidentally broke or drilled into asbestos?
Clear the area immediately and do not re-enter. Close doors and windows to contain fibres. Do not attempt to clean up dust or debris yourself. Contact an HSE-licensed contractor for emergency decontamination and air testing. Accidental ACM destruction generates initial contamination of approximately 7,000 f/m³ and contamination can persist above 4,000 f/m³ for 16 weeks or more without specialist decontamination.
QDo I need a survey before starting renovation work near suspected asbestos?
Yes. A refurbishment survey is a legal requirement under CAR 2012 Regulation 5 before any work that could disturb asbestos-containing materials. The survey must cover the full scope of the planned works, including concealed voids and ceiling spaces. Proceeding without a survey is a criminal offence. For full demolition, a demolition survey is required under both CAR 2012 and CDM 2015.
Related Guides
Is Asbestos Dangerous?
The four asbestos-related diseases, latency periods, and dose-response evidence.
Can I Remove Asbestos Myself?
The three legal categories and what UK law permits for homeowners.
The Asbestos Removal Process
All nine stages of licensed removal from survey to clearance certificate.
Asbestos Regulations UK
CAR 2012 explained — all 22 regulations, control limits, and penalties.
Asbestos Management Survey
Book a UKAS-accredited survey to confirm and assess your ACMs.
Asbestos Refurbishment Survey
Required before any building works that could disturb asbestos.
References
- [1] Obmiński, A. (2020). Asbestos in building and its destruction. Construction and Building Materials, 18 citations.
- [2] Obmiński, A. (2023). Comparison of the effects of use, protection, improper renovation and removal of asbestos products. Scientific Reports, 3 citations.
- [3] Bowen, J. et al. (2017). Managing Asbestos-Containing Materials in the Built Environment. Annals of Work Exposures and Health, 4 citations.
- [4] Phanprasit, W. et al. (2017). Measurement of asbestos fibre release during removal works in a variety of DIY asbestos removal scenarios. Occupational and Environmental Medicine, 1 citation.
- [5] Bolan, S. et al. (2023). Sustainable management of hazardous asbestos-containing materials. Science of the Total Environment, 37 citations.
- [6] Frangioudakis Khatib, G. et al. (2023). Australia's Ongoing Challenge of Legacy Asbestos in the Built Environment. Sustainability, 10 citations.
- [7] Zhang, Y-L. et al. (2020). Risk assessment of asbestos containing materials in a deteriorated dwelling area. Journal of Hazardous Materials, 15 citations.
- [8] Chang, S-N. et al. (2005). Assessing asbestos exposure potential in nonindustrial settings. Journal of Community Health.
Not Sure What to Do Next?
Our UKATA-certified team can assess your situation, confirm whether the material contains asbestos, and advise on the appropriate next step — whether that is management in place, encapsulation, or removal.