Friable vs Non-Friable Asbestos: What's the Difference?

If you’re dealing with asbestos in an older home, the first thing that matters isn’t where it is or how much there is — it’s whether it’s friable or non-friable. That single distinction decides how dangerous it is, who’s legally allowed to remove it, and how much it costs. Here’s the difference in plain English, why it matters, and how to tell which one you’re looking at.

Straight to the point:

Non-friable asbestos is solid — the fibres are bonded into a hard material like cement sheeting, and it can’t be crumbled by hand. It’s stable and lower-risk while it’s intact. Most asbestos in Australian homes is non-friable.

Friable asbestos is soft or crumbly — it can be reduced to powder by hand pressure when dry, which means it releases fibres into the air far more easily. It’s much more dangerous, and under Victorian law it can only be removed by a Class A licensed removalist.

The critical point most people miss: non-friable asbestos can become friable if it’s damaged, weathered, burnt or smashed. That’s why doing removal properly matters — bad handling turns the safer kind into the dangerous kind.

Non-friable (bonded) asbestos

WorkSafe Victoria defines non-friable asbestos as material that, when dry, cannot be crumbled, pulverised or reduced to powder by hand pressure — because the asbestos has been mixed with cement or another hard bonding material that locks the fibres in place.

This is the common one. It’s the asbestos cement sheeting — “fibro” — used across Australian homes built before the mid-to-late 1980s. You’ll find non-friable asbestos in:

Because the fibres are bonded, non-friable asbestos doesn’t normally release them while it’s left undisturbed. The danger comes from cutting, drilling, sanding, breaking or demolishing it — which is exactly what a renovation does.

Friable asbestos

Friable asbestos is any material containing asbestos that’s in powder form, or that can be easily crumbled, pulverised or reduced to powder by hand when dry. Because it’s loose, it releases fibres into the air readily — making it significantly more hazardous than the bonded kind.

It’s less common in ordinary homes but turns up in:

  • Pipe lagging and boiler insulation
  • Sprayed insulation and fireproofing
  • Some old heater and stove insulation
  • Loose-fill insulation
  • Any non-friable material that’s been damaged — burnt in a fire, water-damaged, or smashed during a botched removal

That last point is the one that catches people. WorkSafe is explicit: when non-friable ACM is damaged by fire — or by a work process — the matrix holding it together breaks down and it can become friable. A DIY renovation that smashes fibro instead of removing it intact can turn a straightforward bonded-asbestos job into a hazardous friable one.

Why the difference decides who can legally remove it

This is the practical reason the distinction matters. WorkSafe Victoria issues two removal licences, and which one your job needs depends entirely on whether the asbestos is friable.

Class B licence — non-friable only

A Class B licensed removalist can remove more than 10 square metres of non-friable asbestos and the associated contaminated dust. A Class B holder is not permitted to remove friable asbestos. Most residential jobs — fences, roofs, sheds, cladding — are non-friable and fall under Class B.

Class A licence — friable and non-friable

A Class A licensed removalist can remove any asbestos, friable or non-friable. Class A work carries much stricter requirements: purpose-built enclosures, decontamination units, negative air units, full-face respirators, a nominated supervisor on site throughout, and an independent licensed assessor for air monitoring and clearance. The training is more demanding too — Class A holders need the CPCCDE3015 friable-asbestos qualification, annual refreshers and a medical every two years.

The unlicensed exception

Non-friable asbestos of 10 square metres or less, taking under one hour in any seven-day period, can be removed without a licence — but it still must be done using safe-work procedures. There is no unlicensed exception for friable asbestos. Ever. The full rules are in our guide to removing asbestos yourself in Victoria.

How do you tell which one you've got?

You often can’t, reliably, by looking. As a rough guide: if it’s solid cement sheeting — a fence, a roof sheet, flat wall cladding — it’s almost certainly non-friable while it’s intact. If it’s soft, fibrous, crumbling, or it’s insulation or lagging, treat it as potentially friable and don’t touch it.

But the honest answer is that condition changes everything, and the only certain way to know what a material is — and whether it’s degraded toward friable — is a NATA-accredited lab test. If there’s any doubt, assume the worst, leave it alone, and get it tested. A crumbling, weathered or fire-damaged material that started as bonded fibro may now behave as friable, and that’s not a call to make by eye.

What this means if you've got asbestos at home

For most Melbourne homeowners, the asbestos you’ll encounter — fibro cladding, a Super Six fence, a cement roof, bathroom sheeting — is non-friable, and a licensed removalist handles it under a Class B licence. It’s stable while intact, and the job is straightforward when done properly.

The things that turn it dangerous are damage and DIY. Leave suspect material undisturbed, don’t cut or break it, and get it tested before any renovation. If it’s already damaged, weathered or fire-affected, treat it as friable and get a licensed removalist to assess it — because at that point it’s no longer the low-risk kind, and the rules change completely.

Not sure what you're dealing with?

If you’ve found a suspect material in an older Dandenong home and you’re not sure whether it’s friable, non-friable, or asbestos at all — don’t guess, and don’t disturb it. We arrange NATA-accredited testing and licensed removal across Dandenong and the south-east. Send us a photo or book an assessment.