NSW contractor licence 260823C
Waterproofing in Balgowlah Heights
Balconies and flat roofs facing North Harbour's salt air come first in Balgowlah Heights, a suburb of family houses, followed by showers and bathrooms.
Finished look- Balconies and flat roofs in Balgowlah Heights
- Outdoor membranes for salt air
- Free written quote from your photos
The public NSW licence register lists insured home building work under our licence 260823C nearby in Cremorne (2024–26). Check the register
Get a free quote
Waterproofing in Balgowlah Heights
Add photos if you can. We usually reply within one business day.
NSW contractor licence 260823C
Services
Waterproofing services in Balgowlah Heights
- Balcony and terrace waterproofingSalt air works on sills, outlets and fixings
- Roof waterproofingWind-driven rain finds weak spots in flat roofs
- Bathroom and shower waterproofingBathrooms and showers waterproofed before tiling
- Basement and below-ground waterproofingBelow-ground garages and lower-floor walls
Local notes
Before we start in Balgowlah Heights
What can change a waterproofing job here, and what it means for you.
Who approves the work
Almost every home is a separate house, so bathroom, laundry and balcony work is usually approved by the person living there, with no owners corporation involved.
Salt air
The whole suburb is close to North Harbour and has its own foreshore. Salt air shortens the life of exposed sealants and metal fixings on roof flashings, window sills and balcony edges.
Digging below ground
Some of the suburb is mapped in the low-risk buffer class for acid sulfate soils, close to higher-risk land. Digging deep there for a basement, pool or retaining wall may need a soils plan.
Why choose us
Why choose Sydney Waterproofing NSW
A licensed waterproofer who finds where the water is getting in, fixes it properly and backs the work in writing.
Check licence 260823C on the NSW registerA licensed waterproofer since 2013
Our NSW contractor licence 260823C is in the Waterproofing Technician class. You can check it on the government register.
The cause found before the quote
From your photos, or a visit where photos aren’t enough, we check the falls, the junctions and where the water gets in, so the fix goes to the cause.
Flood tested, with a certificate
Showers, bathrooms, balconies and flat roofs are flood tested before they are covered, and the waterproofing certificate comes to you when the job is finished.
Insured, and covered by warranty
$20 million public liability insurance, and the NSW statutory warranties: six years for waterproofing, a major building element.
Step by step
How it works
- 1
Send photos
Photos of the leak or the area, with what is above, below and beside it. The quote form already has your suburb.
- 2
Get a free quote
We usually reply within one business day, and arrange a free visit where photos aren’t enough.
- 3
Waterproofed and certified
The membrane goes on in coats, flat membranes are flood tested, and the certificate comes to you when the job is finished.
Typical prices
What waterproofing costs in Balgowlah Heights
Typical Sydney prices, which apply here too. Roofs, basements and retaining walls vary too much for a typical figure, so we quote them from photos or a visit.
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 priceReviews
What customers say
Every review is shown word for word, straight from Google.
Absolutely amazing work, really nice team and super flexible, our bathroom looks amazing 👏
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