If you've discovered asbestos in your home, one of the first things you'll hear is whether it's friable or non-friable — and this distinction is critical under New Zealand regulations. The type of asbestos present determines who can legally remove it, what safety controls are required, and how serious the health risk is. Here's what every NZ homeowner needs to know.
What Is Friable Asbestos?
Friable asbestos is material that can be crumbled, pulverised, or reduced to powder by hand pressure when dry. Because it breaks apart so easily, it releases asbestos fibres into the air with very little disturbance. Once airborne, these microscopic fibres can be inhaled and lodge permanently in the lungs, potentially causing serious diseases including mesothelioma, asbestosis, and lung cancer — sometimes decades later.
Common examples of friable asbestos-containing materials (ACM) in NZ homes include:
- Sprayed-on insulation or fireproofing
- Pipe lagging and boiler insulation
- Loose-fill ceiling insulation (rare but serious)
- Deteriorated or damaged textured ceiling coatings
- Some older thermal insulation products
Because of the extreme fibre-release risk, friable asbestos is classified as Class A asbestos removal work under the Health and Safety at Work (Asbestos) Regulations 2016. Class A work must only be carried out by a licensed Class A asbestos removalist — this is non-negotiable under NZ law.
What Is Non-Friable Asbestos?
Non-friable asbestos (sometimes called bonded asbestos) is material where the asbestos fibres are firmly bound within a solid matrix — typically cement, vinyl, or resin. In good condition, non-friable ACM does not readily release fibres and is considered lower risk, provided it is left undisturbed.
Non-friable ACM is extremely common in NZ homes built before the mid-1980s. You'll find it in:
- Fibrous cement (fibre cement) sheeting — wall cladding, eaves, soffits, and wet area linings
- Vinyl floor tiles and the adhesive beneath them
- Corrugated roofing sheets
- Textured paint (in some cases)
- Brake pads and gaskets in older vehicles
Non-friable asbestos becomes dangerous when it is cut, drilled, sanded, or broken — actions that release fibres. This is why DIY renovations in older NZ homes carry real risk.
How NZ Regulations Classify Removal Work
The Health and Safety at Work (Asbestos) Regulations 2016, administered by WorkSafe NZ, set out two classes of licensed removal work:
| Class | Asbestos Type | Who Can Do It |
|---|---|---|
| Class A | Friable asbestos (any amount) | Licensed Class A removalist only |
| Class B | Non-friable asbestos (>10 m²) | Licensed Class A or Class B removalist |
| No licence required | Non-friable asbestos (≤10 m²) | Any competent person — but still must follow safe work practices |
Important: Even when no licence is technically required for small amounts of non-friable ACM, you must still follow safe work practices. WorkSafe NZ provides guidance on minimum controls, including wetting the material, wearing the correct P2 respirator, and disposing of waste at an approved facility.
For any removal over 10 m² of non-friable material, or any amount of friable asbestos, you must engage a licensed professional. Always ask to see their current WorkSafe licence before work begins.
The Importance of an Asbestos Survey First
Before any renovation, demolition, or removal work on a pre-1990 NZ home, you should commission an asbestos survey carried out by a qualified asbestos assessor. They will identify and sample suspect materials, confirm whether asbestos is present, and classify it as friable or non-friable. This is not just good practice — under the Health and Safety at Work Act 2015, persons conducting a business or undertaking (PCBUs) have a duty to identify asbestos before disturbing it.
BRANZ has published research on the prevalence of ACM in NZ housing stock and is a useful reference for understanding where asbestos was commonly used.
Can Non-Friable Asbestos Be Left in Place?
Yes — in many cases, encapsulation or management in place is a valid option for non-friable ACM that is in good condition and won't be disturbed. A qualified assessor can help you decide whether removal or management is the right approach. If you're selling, renovating, or the material is deteriorating, removal is usually the safer long-term choice.
Disposal of Asbestos Waste in NZ
Asbestos waste — friable or non-friable — must be double-bagged in heavy-duty polythene bags, clearly labelled, and taken to a landfill that is licensed to accept asbestos. You cannot put asbestos in your kerbside bin or skip. Contact your local council to find an approved disposal site in your area.
When to Call a Professional
You should always engage a licensed asbestos removalist if:
- Any friable asbestos is present (Class A licence required)
- Non-friable ACM covers more than 10 m² (Class B or Class A licence required)
- You are unsure whether a material contains asbestos
- The material is damaged, deteriorating, or will be disturbed during renovation
- You are demolishing a pre-1990 building (a full asbestos survey is required before demolition)
A licensed professional will have the correct equipment, training, and insurance — and will issue you with a clearance certificate once the work is done safely. You can find qualified asbestos removal specialists in your area on tradedirectory.co.nz.
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