What an Asbestos Assessment Actually Finds in a Melbourne Home

If your house was built before 1990, the working assumption is that asbestos is in it somewhere. Not maybe. Somewhere. The purpose of an assessment is to establish where, how much, and what condition it is in — because those three answers set both the removal method and a meaningful part of your demolition budget.

Where it actually turns up

The obvious places:

- Fibre-cement roof sheeting on garages, carports and sheds - Eaves and soffit lining - Bathroom, laundry and kitchen wall sheeting - Fence sheets and infill panels - The sheet behind a wood heater or stove

The ones that get missed:

- **Vinyl floor tiles** and the black bituminous adhesive under them - The backing on old sheet vinyl - **Textured ceiling coatings** in houses of the right era - **Electrical meter boards** and switchboard backing panels - **Pipe lagging** in subfloors and around old hot water services - Packing washers behind wall sheets and under fixings - Sarking and insulation products in some roofs

Bonded versus friable

**Bonded (non-friable)** material has the fibres locked into a matrix — flat sheet, corrugated roofing, most of what people picture. Undisturbed and in good condition it is stable. Broken, weathered or cut with a power tool, it stops being stable, which is why sheet is removed whole and wet rather than snapped and dropped.

**Friable** material can be crumbled by hand pressure. Lagging, some textured coatings, and any bonded material that has degraded badly. It is a much higher-risk category: it requires a Class A licensed removalist, notification to WorkSafe before the work starts, and independent air monitoring with a clearance certificate at the end.

The distinction drives cost far more than raw quantity does.

What an assessment involves

A licensed assessor inspects the property, samples suspected materials, has them analysed, and produces a report identifying what is present, where, in what condition and in what quantity.

For a demolition, that report is the removal plan. It is also your evidence — the disposal documentation and clearance certificates that go with it are what you will want if the property is ever sold, insured, or argued about.

When it should happen

Before the machines are booked. Not on the morning of day one.

Asbestos comes out under controlled conditions before the building is demolished — a machine cannot demolish a building with asbestos still in it. If the removal has not been scoped and scheduled, the demolition cannot start, and everything behind it moves.

What removal looks like

Deliberately unglamorous. Wet the material down to suppress fibres. Remove it whole rather than breaking it. Double-wrap and label it. Keep the area controlled and access restricted. Decontaminate on the way out. Load onto a tracked transport and dispose at an EPA-authorised facility.

No dry cutting. No power tools on sheet. No "it is only a small piece".

What happens when more is found

It happens — behind linings, under floor coverings, in subfloors nobody could access at assessment stage. The correct response is that work stops in that area, you are told what has been found and what it costs, and nothing else proceeds until that is agreed in writing.

Any other approach — quietly continuing, or quietly disposing of it with the general waste — is both illegal and a problem that follows the property, not the contractor.

The budget point

An assessment converts your largest demolition unknown into a number. On a typical pre-1990 house that is usually a modest line item. Occasionally it is a significant one. Either way, knowing at quoting stage is worth far more than the assessment costs.