The Danger Is Still Here
New Zealand banned the import of asbestos-containing materials in 2016. The ban addressed the future — but the past is embedded in thousands of buildings across the country. Any structure built or renovated before 2000 may contain asbestos in its ceiling tiles, cladding, insulation, vinyl floor tiles, pipe lagging, roofing felt, or guttering. You cannot see it. You cannot smell it. And the disease it causes — mesothelioma, asbestosis, lung cancer — may not appear for 20 to 50 years after exposure.
Asbestos kills 220 New Zealanders every year. It remains the leading work-related cause of death in this country, despite the fact that the generation now being diagnosed was exposed decades ago, by a generation that did not know the risk. Today’s workers will be tomorrow’s statistics if current site practices are inadequate.
Where It Hides
Asbestos-containing materials in the built environment fall into two categories: friable (easily crumbled, releasing fibres readily) and non-friable (bonded in cement or other matrix, safer when undisturbed). Common locations include:
- Textured ceiling coatings and sprayed insulation
- Fibrous cement sheeting used in cladding, eaves, soffits, and internal linings
- Floor underlays beneath vinyl tiles
- Pipe lagging and duct insulation in older commercial buildings
- Roofing felt and bitumen products
- Electrical switchboard backing panels
Intact, undisturbed asbestos-containing material in good condition poses a lower immediate risk than material that is being cut, drilled, sanded, or demolished. The risk is in the airborne fibre — and airborne fibres are created when material is disturbed.
A Practical Management Framework
Site Safe New Zealand has developed an asbestos awareness course for tradespeople, building managers, and property owners that outlines a six-step management approach:
- Pause and presume: before any intrusive work in a pre-2000 building, presume asbestos is present until testing confirms otherwise
- Test materials: engage a licensed asbestos assessor to sample and test suspect materials
- Plan management: develop an asbestos management plan based on the assessment findings
- Use licensed professionals: all removal of class A asbestos (friable or above 10 square metres of non-friable) requires a licensed removalist
- Control exposure: where management in place is chosen over removal, implement monitoring and access restrictions
- Communicate clearly: ensure all workers, contractors, and building users know where asbestos-containing materials are and what the management plan requires
Today’s site practices determine tomorrow’s health statistics. The decisions made on site this year — about testing, about disturbing suspect materials, about protective equipment — will show up in WorkSafe’s disease statistics in 2045. That lag is precisely what makes asbestos so insidious, and why the obligation to manage it carefully cannot be deferred.
