What to Expect During the Asbestos Removal Process in NZ: Start to Finish

Asbestos removal in New Zealand is a carefully regulated process designed to protect you, your family, and the workers involved. Whether you've found suspect material in an older home or a surveyor has flagged it during a renovation, understanding each stage of the process will help you feel confident and prepared. Here's what to expect from start to finish.

Step 1: Asbestos Identification and Survey

Before any removal can happen, the material needs to be identified and assessed. A qualified asbestos assessor will inspect your property and take samples of suspect materials — things like textured ceiling coatings ("popcorn" ceilings), vinyl floor tiles, roof cladding, pipe lagging, or wall linings common in homes built before the mid-1980s.

Samples are sent to an accredited laboratory for analysis. The assessor will then produce an Asbestos Management Plan or survey report that outlines:

• Where asbestos-containing materials (ACMs) are located
• Their condition (friable or non-friable)
• The recommended course of action (removal, encapsulation, or management in place)

This step is critical. Never disturb suspect materials before getting them tested.

Step 2: Choosing a Licensed Removalist

In New Zealand, asbestos removal is restricted work governed by the Health and Safety at Work (Asbestos) Regulations 2016, administered by WorkSafe NZ. The class of licence required depends on the type of asbestos:

Friable asbestos — material that can be crumbled by hand — is the most hazardous and requires a Class A licence holder. Always ask to see a removalist's current WorkSafe licence before engaging them. You can find qualified local specialists on tradedirectory.co.nz.

Step 3: Notification and Consents

For removal jobs above certain thresholds (generally 10 square metres or more of non-friable material, or any friable asbestos), the removalist is legally required to notify WorkSafe at least five working days before work begins. Your contractor should handle this, but it's worth confirming.

Depending on the scope of work, a building consent may also be required — for example, if removal involves structural elements or significant alterations. Always check with your local council, as consent requirements vary. The MBIE Building Performance website has useful guidance on what triggers consent.

Step 4: Setting Up the Work Area

On the day work begins, the removalist will establish a controlled work zone. For friable asbestos especially, this involves:

• Sealing off the area with heavy-duty plastic sheeting and negative air pressure units (to prevent fibres escaping)
• Posting warning signs around the perimeter
• Setting up a decontamination unit (a series of airlocks where workers shower and change PPE before leaving the zone)
• Ensuring all workers wear appropriate personal protective equipment (PPE) including P2/P3 respirators and disposable coveralls

You and your family (including pets) will need to vacate the property or at least the affected area during this phase. Your removalist will advise you on how long to stay away.

Step 5: The Removal Itself

The actual removal method depends on the material type and condition. Common techniques include:

• Wet methods — keeping materials damp to suppress fibre release
• Careful hand removal to keep sheets or tiles intact where possible
• HEPA-filtered vacuum equipment to capture any loose fibres
• Wrapping removed material in double-sealed, labelled asbestos waste bags as work progresses

All waste must be clearly labelled as asbestos-containing material in accordance with WorkSafe requirements.

Step 6: Disposal at an Approved Facility

Asbestos waste cannot go in your general skip bin or kerbside rubbish. It must be transported to a council-approved disposal facility that accepts hazardous waste. Your licensed removalist is responsible for arranging this and should provide you with a waste disposal receipt or manifest as proof. Check with your local council if you're unsure which facilities are approved in your region.

Step 7: Clearance Inspection and Air Monitoring

Once removal is complete, an independent licensed asbestos assessor (separate from the removalist) must carry out a clearance inspection. For Class A (friable) removals, this includes air monitoring to confirm that airborne fibre levels are within safe limits.

The assessor will issue a clearance certificate only when the area passes inspection. This document is important — keep it with your property records, especially if you plan to sell in the future.

Step 8: Reinstatement

With a clearance certificate in hand, any reinstatement work — patching, repainting, re-lining — can begin. Your removalist may offer this service, or you may engage a separate tradesperson. BRANZ has research and guidance on best-practice reinstatement for older NZ homes.

When to Call a Professional

Asbestos removal is not a DIY job. Disturbing asbestos-containing materials without proper controls can release microscopic fibres that cause serious lung diseases, including mesothelioma and asbestosis — often decades later. Even small amounts of friable asbestos must be handled by a licensed professional.

If you suspect asbestos in your home — particularly in a property built before 1990 — do not drill, sand, cut, or demolish any suspect material. Contact a licensed asbestos assessor first, then engage a licensed removalist. You can find qualified professionals in your area through tradedirectory.co.nz.

Sources & Further Reading

• WorkSafe NZ – Asbestos — regulations, licensing, and worker safety
• MBIE Building Performance — building consents and the NZ Building Code
• BRANZ — research on NZ building materials and renovation guidance
• Standards NZ — relevant standards including NZS guidelines for hazardous materials
• Tenancy Services — Healthy Homes obligations for rental properties containing asbestos