Asbestos in Old Bathrooms: What to Expect

Why this comes up so often on the North Shore

A very large share of the housing here predates 1990. The interwar and Federation homes through Roseville, Lindfield and Willoughby, the post-war brick veneer across St Ives, and the 1960s and 1970s walk-ups through Chatswood, Crows Nest and North Sydney all sit within the period when asbestos cement was standard building material.

There is a trap in the dates that catches people. A house built in 1925 predates common asbestos use — but if its bathroom was refitted in 1972, the sheeting behind those tiles is squarely from the asbestos era. The relevant date is the date of the bathroom, not the date of the house.

Where it turns up in a bathroom

Wet areas were a common application because asbestos cement resists moisture. The usual locations:

• Wall sheeting behind the tiles — the most common by far.
• Ceiling sheeting, particularly in a bathroom with a flat lined ceiling.
• Behind the bath, in the panel or the surround.
• Under vinyl flooring, in the backing or the adhesive.
• The eaves outside the bathroom window, which matters if a window is being altered.

None of these are visible until something comes off.

You cannot identify it by eye

This is the part worth being firm about. Asbestos cement looks very much like the fibre-cement sheeting that replaced it, and internet photo comparisons are not a test.

The answer is a hazardous materials survey: a competent assessor inspects, takes samples, and produces a report identifying what is present, where, and in what condition. That report is what the removalist prices from, what your builder sequences around, and what you keep in your property records.

On a pre-1990 bathroom, the sensible default is to assume asbestos is present until a survey says otherwise, and to have that survey done before the quote is finalised rather than after demolition has started.

Who is allowed to remove it

Asbestos removal is licensed work in NSW, and the licence is separate from a builder's licence. There are distinct classes covering friable and non-friable material, and thresholds above which licensed removal is required.

Practically, this means:

• Your renovation builder does not remove it unless they separately hold the appropriate licence.
• A licensed asbestos removalist prices and performs the removal.
• Depending on the work, a clearance may be required before the area is handed back.
• The waste goes to a facility licensed to receive it, with documentation following the material.

If anyone offers to "just take the sheeting out with the rest of the demo", that is not a saving. Ask which licence they hold and confirm it covers your material. A legitimate operator answers that question without hesitation.

What it does to your program

This is the part that surprises people more than the cost. Asbestos does not simply add a line to the invoice — it re-sequences the job.

The order becomes: survey, then removal by the licensed removalist, then clearance, and only then does normal demolition and rough-in continue. Each of those steps has its own scheduling, and the trades who were booked for week one are now booked for week two or three.

Allow a week or more of additional elapsed time as a realistic default, and more if the material is extensive or in poor condition.

What it does to the cost

It is quoted separately, by the removalist, based on the survey — which is the correct way round. Folding an estimate for asbestos into a renovation quote before anyone has tested anything produces a number that means nothing.

What drives it: the quantity, whether the material is friable or non-friable, its condition, access, and the disposal pathway. The cost page sets out the renovation bands; asbestos sits outside them deliberately.

If it is found mid-job

Work stops in that area. Not "carefully continues" — stops.

Nobody should keep pulling tiles off a wall that may be asbestos sheeting, because breaking it is precisely what creates the risk. The area is isolated, assessed, and a licensed removalist deals with it before anything else happens.

A quote with a proper variation clause makes this straightforward: the discovery gets documented, priced and approved, and the program adjusts. A quote that is silent on discoveries makes it an argument.

The questions to ask before you sign

1. When was this bathroom last refitted? If before about 1990, assume asbestos until tested.
2. Is a hazardous materials survey included, or should I arrange one?
3. If asbestos is found, who removes it and what licence do they hold?
4. How is that priced — separately by the removalist, or absorbed into your quote?
5. What does it do to the program?
6. Will I get the removal documentation and any clearance certificate?

Keep the paperwork. It records what was on your property, who removed it, under which licence, and where it went — and a future buyer's inspector may well ask.

What this means if you are buying

If you are inspecting a North Shore house with an original or mid-century bathroom, price the possibility in rather than discovering it later.

Ask the agent when the bathroom was last done. Look at the era of the fittings rather than the tiles, because tiles get replaced over sheeting. If the house is pre-1990 and the bathroom looks period-appropriate to that era, assume there is asbestos somewhere in the wet areas and factor a survey plus potential removal into your renovation budget.

None of that should stop you buying. It is one of the most common conditions in Sydney's housing stock, and it is a known, priced, regulated process rather than an open-ended risk. What you are avoiding is the version where you exchange, book a builder for the month after settlement, and find out in week one that the program has moved by a fortnight.

A pre-purchase building inspection will often flag "possible asbestos-containing materials" without testing. That is a prompt to investigate, not a diagnosis.

The reassuring part

Undisturbed asbestos cement in sound condition, sealed behind tiles, is generally considered low risk. The problem is created by breaking it, which is what a renovation does.

Handled in the right order — survey, licensed removal, clearance, then build — it is a routine and well-understood part of renovating older housing. It is only dangerous when someone decides it is an inconvenience rather than a step.

Call 02 4602 1201 or send the details through, and tell us roughly when the bathroom was last done.