Suspected asbestos-containing material needs a careful response before building work begins. A photograph, colour or age estimate is not a suitable basis for deciding that a material is safe to disturb.
Pause work that could disturb it
Do not drill, cut, sand or break suspected material to investigate it. Ask a competent asbestos professional about identification and the assessment needed for the proposed work. This article is not a guide to sampling, removal or disposal.
Assess condition and the planned work
HSE advises that asbestos materials in good condition, which are unlikely to be damaged, are often best left in place. That is a reason to assess the situation, not a promise that every suspect roof or panel can be ignored. Deterioration, damage or a planned alteration can change the appropriate response.
Tell the people doing the work
Before maintenance or refurbishment, share any relevant survey information and the location of suspected material with the contractor. Ask who will assess the risk and how the work will be planned. HSE distinguishes work that requires a licensed contractor from other categories; do not assume that a reference to asbestos cement makes a job suitable for DIY.
Keep the decision record
Retain the assessment, photographs taken without disturbing the material, advice received and any contractor documentation. If there has been accidental disturbance, stop the activity and obtain professional advice rather than attempting an improvised clean-up. The next step should be based on the material and its condition, not on a generic online description.
Editorial review: 14 October 2026. This original Property Perpetuity guide replaces the imported text; the original archive publication date is retained.