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What Happens During the Demolition Stage of a Bathroom Renovation?
Demolition is the first physical stage of any bathroom renovation, and it's the point where the old bathroom gets stripped back to a bare shell before any new work begins. In a standard Sydney bathroom, demolition usually takes one to two days and covers removing tiles, the old vanity, toilet, bath or shower base, and any wall linings that aren't staying. What comes out from behind those old tiles, particularly in a home built before the 1990s, often shapes the rest of the project more than anything in the original quote.
How Long Does Bathroom Demolition Take?
Demolition on a standard Sydney bathroom typically takes one to two days for a licensed team, depending on the size of the room and how the old bathroom was built. A small ensuite with a simple layout might be stripped in a single day, while a larger bathroom with a built-in bath and full wall tiling can run closer to two days.
Older bathrooms with a mortar bed under the tiles, rather than a modern adhesive fix, generally take longer to break out. Solid brick or masonry walls behind the tiling also slow things down compared to a fibro or plasterboard-lined wall, since the tiler and demolition team need to work more carefully around anything structural.
What Gets Removed First During a Bathroom Demolition?
Fixtures come out before tiles, and tiles come out before wall linings. A typical demolition sequence starts with disconnecting and removing the toilet, vanity, basin and any bath or shower screen, followed by wall and floor tiles, then the old waterproofing membrane and substrate underneath.
- Toilet, basin, vanity, bath and shower screen disconnected and removed
- Wall and floor tiles broken out and bagged for disposal
- Old waterproofing membrane and any damaged sheeting removed down to the frame or slab
- Existing plumbing and electrical points capped off safely until rough-in begins
Do You Need Asbestos Testing Before Bathroom Demolition?
Any Sydney home built or renovated before 1990 should have asbestos testing done before demolition starts, since fibro sheeting and old tile adhesive are common places to find it. A licensed builder arranges this testing as a standard step rather than an optional extra once a pre-1990 build date is confirmed.
If asbestos is found, it doesn't derail the renovation, it just means a licensed removalist handles that specific material before the rest of the demolition continues. This is one of the main reasons a fixed quote for an older home should always include an allowance for the possibility, even if it turns out not to be needed.
What Happens to the Old Waterproofing Membrane During Demolition?
The old waterproofing membrane is removed completely during demolition, along with any timber or plasterboard it has damaged over the years. This is often where a renovation reveals more than expected, since a membrane that failed silently for a decade can leave rot in a timber floor or corrosion in a steel frame that wasn't visible from the surface.
Once the substrate is exposed, an experienced builder can tell fairly quickly whether the frame or slab underneath is sound, and any new waterproofing goes back in to current AS 3740 requirements as part of the rebuild.
Can You Live in the House While the Bathroom Is Being Demolished?
Yes, most homeowners stay in the house during bathroom demolition, provided there's a second bathroom available or a plan for the days water is disconnected. Demolition itself is dusty and noisy rather than disruptive to the whole home, and a good crew will set up dust barriers and protect hallway floors before starting.
If the bathroom being renovated is the only one in the house, it's worth discussing water shut-off timing with the builder in advance so there's no surprise about a morning without a working shower.
How Much Mess and Noise Should You Expect During Demolition?
Demolition is the noisiest and messiest stage of a bathroom renovation, with jackhammering on tiles, angle grinders on old fixtures, and a steady flow of rubble out to a skip bin or ute. A tidy crew will sheet the floors from the bathroom door to the front of the house and use plastic barriers to keep dust contained, but some fine dust in nearby rooms is normal for a day or two.
Waste removal is usually included in the renovation cost, with old tiles, timber and fixtures taken away progressively rather than left piled up on site until the job finishes.
No, most homeowners stay in the house during demolition. It's worth planning around water being shut off for part of a day, especially if it's the only bathroom in the home.
Demolition itself takes one to two days, while the full renovation from demolition through to completion typically runs three to five weeks depending on the scope of work and whether any layout changes are involved.
Work on that section stops until a licensed asbestos removalist safely removes the material, then demolition continues as normal. This is factored into the project timeline for any pre-1990 home rather than treated as an unexpected delay.
Yes, waste removal is generally included as part of the overall renovation cost rather than billed separately, though it's worth confirming this is spelled out in the written quote.
Once demolition reveals exactly what's behind the old tiles, it usually becomes clear pretty quickly whether the budget will hold or whether there are extra costs to plan for. If you're weighing up what a full renovation might cost once the unexpected is factored in, our guide on what a $10,000 bathroom renovation in Sydney actually gets you is a good place to see where budgets tend to stretch. We've also covered the most common ways a bathroom renovation budget blows out once demolition is done, which is worth reading before your project starts rather than after.
If you're planning a renovation in an older Sydney home and want a straight answer on what demolition is likely to uncover, get in touch with our bathroom renovation company for a free, itemised quote. Ali and the team have opened up hundreds of Sydney bathrooms over 15 years, so there's not much behind the tiles that catches us by surprise.
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Talk to our friendly bathroom experts today about your Sydney bathroom renovation.
GET IN TOUCH
Talk to our friendly bathroom experts today about your Sydney bathroom renovation.
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