Cost8 min read
How much does waterproofing cost in Sydney?
What a bathroom membrane, a leaking shower, a balcony and a pool retile typically cost in Sydney, including GST, and what a written quote should list.
NSW contractor licence 260823C
Waterproofing services in Sydney
From showers and laundries to basements, lift pits and strata buildings: every service, and typical prices where a job allows one.
Finished look- 10 waterproofing services
- Typical prices shown up front
- Free written quote from your photos
Get a free quote
Add photos if you can. We usually reply within one business day.
NSW contractor licence 260823C
Services
Choose your job
The two jobs we do most come with typical prices. Every other service has its own page, and roofs, torch-on, basements, retaining walls and lift pits are priced from your photos or a visit.
Finished look- Typical price
- $600–$1,200per job, in a renovation
- $2,500–$6,500per job, leaking shower
Bathrooms & showers
New bathrooms sealed before the tiler starts, and leaking showers fixed properly at the source.
- Bathrooms and ensuites in a renovation or new build
- Showers leaking into the next room or ceiling
- Signed certificate for your certifier
Finished look- Typical price
- $350–$650per m², balcony redone
- From photosterraces and repairs
Balconies & terraces
Balconies leaking into the room below, stripped back and redone properly so they stay dry.
- House and apartment balconies
- Terraces and roof decks over living space
- Strata balconies, one unit or the whole building
Priced from photos
Basements & below ground
Walls and floors that sit against the soil, kept dry.
Basements ·Negative-side waterproofing
Priced from photos
Priced from photos
Priced from photos
Priced from photos
Priced from photos
Typical prices
Typical prices, free written quotes
What real Sydney jobs usually cost. Your written quote is for your job, and it’s free.
Waterproofing a bathroom in a renovation
$600–$1,200Per job, including GST
What’s included
Covers: Primer, bond breakers, the waste detail and the membrane across the floor and up the shower walls, with the tiles already off.
Not included: strip-out, screed and tiling.
Fixing a leaking shower properly
$2,500–$6,500Per job, including GST
What’s included
Covers: The whole job: tiles, bed and failed membrane out of the shower recess, a new membrane, and the recess retiled by a licensed tiler.
Redoing a leaking balcony
$350–$650Per square metre, including GST
What’s included
Covers: The whole job: tiles, screed and old membrane removed to the slab, a new membrane, then the screed and tiles relaid by a licensed tiler.
Not included: concrete cancer repairs and balustrade work.
All prices include GST. Roofs, torch-on, basements, retaining walls and lift pits are priced from your photos or a visit.
What changes the priceWhy choose us
Licensed, insured and backed in writing
A licensed waterproofer who does the job once and does it properly, with the insurance, paperwork and warranty to back it.
Check licence 260823C on the NSW registerLicence 260823C
NSW Waterproofing Technician since 2013, current to 10 July 2028.
$20m insured
Public liability cover on every job, big or small.
Statutory warranties
On home building work in NSW: six years for major defects, two for others.
Tested before it’s covered
Showers, bathrooms, balconies and flat roofs flood tested, with a waterproofing certificate.
Renovating or building?
Builders, renovators and owner-builders: we seal it before the tiler starts, test it, and hand over the paperwork your certifier needs.
Step by step
How it works
Four simple steps from first photo to finished job, with a written price before we start.
- 1
Send photos
Text or email a few photos of the job, or call us.
- 2
Free written quote
Clear and in writing, usually within one business day.
- 3
Sealed and tested
We seal it properly, and flood test floors and balconies before anything covers them.
- 4
Signed off
A waterproofing certificate for your certifier, and the statutory warranties on home building work.
Guides
Plain answers from a licensed waterproofer
- Cost
Standards10 min read
Which waterproofing standards apply in Australia?
AS 3740:2021 for showers, bathrooms and laundries; AS 4654.2 for balconies and flat roofs. What each asks for, how NCC 2022 applies in NSW, and licences.
- Lifespan
6 min read
How long does waterproofing last?
No membrane has a single lifespan: most fail early at a corner, drain or sill. How the membrane types differ, and the signs one is failing.