“Asbestos-containing material” — ACM — is any material or object in which asbestos is present as part of the design or as a contaminant. The law does not treat all of it the same way, and the single distinction that drives almost everything else is whether the material is friable or non-friable.
Friable and non-friable
The definition tracked by every Australian regulator is a hand test. Material is friable if it contains asbestos and is in a powder form, or can be crumbled, pulverised or reduced to a powder by hand pressure when dry. Anything else containing asbestos is non-friable — the fibres are bound into a matrix, usually cement, resin or vinyl, and stay there unless the matrix is broken.
Why the distinction carries so much weight
Friable material releases respirable fibres readily and without much provocation. Non-friable material generally will not, until someone cuts, drills, grinds, sands or water-blasts it. Almost every escalation in the regulations — licence class, enclosure, negative pressure, mandatory independent air monitoring — is triggered by the material being friable, or by a non-friable material having been damaged badly enough that it is no longer meaningfully bound.
| Non-friable | Friable | |
|---|---|---|
| Fibre release at rest | Low — fibres bound in a matrix | High — fibres readily become airborne |
| Licence needed | Class B (or Class A) above 10 m²; unlicensed at or under 10 m² | Class A, any quantity, no exceptions |
| Enclosure and negative pressure | Not generally required | Required, with the enclosure leak-tested |
| Air monitoring | Permitted and sometimes prudent, but not mandated | Mandatory, by an independent licensed asbestos assessor |
| Clearance issued by | An independent competent person | An independent licensed asbestos assessor |
| Homeowner may do it | In Queensland, yes — up to 10 m² without a certificate | Never |
Asbestos-contaminated dust and debris
ACD is the third category, and the one most often missed. It is dust or debris that has settled and contains asbestos — the residue of a demolition, the fallout from weathered sheeting, the material behind a switchboard, the sediment in a ceiling space. It is treated separately in the regulations because it is not attached to anything and frequently has no obvious source.
Whether ACD can be cleaned up without a licence depends on two things: whether it is associated with a removal, and if not, whether the contamination is “only a minor contamination”. There is no square-metre or time figure in the regulation for that. It is a risk-assessment judgement made on the factors Safe Work Australia sets out — the time the cleanup will take, the size and extent of the contamination, how many workers are exposed, the complexity of the work and of the controls, and the knowledge and skills needed. The worked examples are on the licensing page.
Where ACM is found in buildings
Australia was among the heaviest per-capita users of asbestos in the world. Asbestos cement sheeting production ceased during the 1980s — the largest local manufacturer stopped using asbestos in the mid-1980s — while friction materials and gasket sheeting were phased out later, up to the national ban on manufacture, supply, storage, sale, use, reuse, installation and replacement that took effect on 31 December 2003.
The convention used by the national guidance, and the sensible working assumption, is prior to 1990: stock already supplied kept being installed after manufacturers stopped making it, so any structure built or refurbished before 1990 should be treated as potentially containing ACM until an inspection says otherwise.
Typically non-friable
- Fibre cement sheeting — external cladding, eaves and soffits, internal wet-area lining, fencing
- Corrugated fibre cement roofing (“super six”) and ridge capping
- Fibre cement pipe — stormwater, sewer, water main, flue and vent
- Vinyl floor tiles, the backing of sheet vinyl, and the bitumen adhesive under both
- Textured decorative coatings and some cement renders
- Bituminous damp-proof membranes, mastics, and window and roof sealants
- Electrical switchboard backing panels and arc chutes
Typically friable
- Sprayed limpet insulation and thermal lagging on pipework, boilers and vessels
- Pipe and boiler gaskets, rope and braided packing once disturbed or degraded
- Millboard, insulating board and backing to heaters and stoves
- Loose-fill ceiling insulation
- Asbestos-containing dust and debris in ceiling and floor voids
- Any non-friable material that has been badly damaged — fire-affected, water-blasted, crushed by demolition plant, or weathered to the point of losing its matrix
The condition assessment is not a formality
The same product can be non-friable on one wall and friable on the next. A sheet that has been high-pressure cleaned, or that has spent thirty years under a leaking gutter, may fail the hand test even though the product it came from never would when new. Condition is assessed as found, not as manufactured — and it decides the licence class, so it decides the cost, the programme and the controls.
Where ACM is found in plant and equipment
Public asbestos material is overwhelmingly about houses and school buildings. A great deal of Australia’s remaining friable asbestos is not in either — it is in industrial plant, and it behaves differently.
- Thermal lagging on process vessels, tanks, boilers, steam lines and exhaust ducting
- Gaskets and packing in flanges, pumps, valves and manways
- Friction materials — brake and clutch linings on mobile plant, hoists, winches and rail equipment
- Refractory and furnace linings, kiln seals and hot-face insulation
- Cable insulation, transite panels and switchgear components
- Marine and rolling-stock insulation
The Code of Practice recognises this explicitly: the contents matrix for an asbestos removal control plan is a four-way grid, with buildings and structures and plant and equipment each split friable and non-friable. Plant work often means working at height, in confined spaces, around live services and stored energy, and inside enclosures built around irregular geometry rather than a flat wall. The case study on this site sits squarely in that quadrant.
The register and the management plan
If asbestos or ACM is identified or assumed at a workplace, two documents follow. They are the responsibility of the person with management or control of the workplace — not the removalist.
| Asbestos register | Asbestos management plan | |
|---|---|---|
| Model reg | 425 (review: 426; access: 427; transfer: 428) | 429 (review: 430) |
| What it does | Records the asbestos or ACM identified or assumed present — location, type and condition — or states that none is present | A written plan recording the decisions made about managing that asbestos, and the reasons for them |
| Reviewed | At least every five years, and additionally whenever further ACM is identified, or asbestos is removed, disturbed, sealed or enclosed | |
| Availability | Readily accessible to workers and their representatives | |
Before licensed removal work starts, the licensed removalist must obtain a copy of the register from the person with management or control of the workplace (model reg 463). That duty does not apply at residential premises — which is precisely why a domestic job needs a careful inspection instead: there is no register to inherit.
Note the register records location, type and condition. Those are the same three attributes the control plan must record for the material being removed. That is not a coincidence — the register is meant to be the starting point for the removal plan.
Demolition and refurbishment
A separate part of the regulations bites before a building comes down or gets pulled apart. In outline: the register must be reviewed (reg 448) and given to the demolition or refurbishment PCBU (reg 449), who must obtain it (reg 450) and determine whether asbestos is present (reg 451). Asbestos must be identified and removed before demolition begins (reg 452) and before refurbishment begins (reg 456), with separate provisions for domestic premises (regs 453, 457) and for emergencies (regs 454, 455).
The sequence matters. Once a structure is on the ground, non-friable sheeting that was intact an hour earlier is broken material mixed through rubble — and what was a Class B job with a clean scope has become contaminated fill with no defined boundary.