Below-ground wall waterproofing during excavation for a new home
Waterproofing Licence: 36763C

Waterproofers in Illawong – Stop Pool & Basement Leaks for Good

Certified membranes, honest advice and a written 7-year warranty. We waterproof pools, basements and bathrooms across Illawong and nearby suburbs.

  • Licensed waterproofers
  • 7-year warranty
  • Free inspection
  • AS 3740 & AS 4654
Retaining wall on a sloping block Illawong NSW 2234
Waterproofing Illawong

Expert Waterproofing for Illawong Homes & Businesses

Searching for experienced waterproofers in Illawong? We specialise in waterproofing services in Illawong for homeowners, landlords, builders and strata managers. From pool leaks to basement and bathroom repairs, our licensed team gets it right the first time – free inspection, written quote, 7-year warranty.

From large family homes on sloping blocks to townhouses, the properties we waterproof in Illawong and across the Sutherland Shire vary a lot. What doesn’t change is our approach: inspect carefully, find the cause, and use a membrane system that suits the surface, the exposure and how the space is used.

Because we hold Waterproofing Licence 36763C and certify our work to Australian Standards, our waterproofing is recognised by insurers, certifiers and strata committees – and it’s covered by a written 7-year warranty.

Illawong Waterproofing Services

Illawong Waterproofing – From Wet Areas to Rooftops

Every waterproofing service is available in Illawong. Pool, Basement, Bathroom and Balcony waterproofing get our closest attention, because they’re the jobs Illawong property owners call us for most.

Concrete pool shell prepared for waterproofing Pools & spas

Pool Leak Repairs Illawong

If you’re topping up the pool far more than usual, water is probably escaping through cracks, joints or a failed membrane. We find the leak, repair the shell and re-waterproof pools in Illawong – and waterproof new concrete pools before tiling.

  • Repairs for pools losing water
  • New pool membranes before tiling
  • Spa and plunge pool waterproofing
Pool waterproofing
Below-ground wall waterproofing before backfill Below ground

Basement, Dincel & Retaining Wall Waterproofing

Below-ground waterproofing has to resist constant water pressure, so the system matters. We use membranes suited to the wall type and conditions – applied before backfill on new builds, or from the inside where excavation isn’t practical.

  • Dincel, block and retaining walls
  • Basement slab and joint repairs
  • Lift pit waterproofing
Dincel wall waterproofing
Shower recess and bathroom floor waterproofed before tiling Bathrooms

Shower Leak Repairs & Bathroom Waterproofing

Showers leak when the membrane is cracked, missing at the hob or wall junction, or wasn’t sealed around the floor waste. In Illawong we test, trace and repair the actual failure point – then re-waterproof to AS 3740 so the repair lasts as long as the tiles.

  • Shower recesses, en-suites and full bathrooms
  • Membrane to AS 3740 with compliance certificate
  • Tile injection when tiles are sound
Bathroom waterproofing
Balcony waterproofing membrane applied before new tiles Balconies

Balcony & Terrace Waterproofing Illawong

Leaking balconies are one of the most common strata repairs we do. We re-waterproof balconies and terraces with minimal disruption, keep residents and managers informed, and provide a written warranty for the owners’ corporation records.

  • Balconies, terraces and courtyards
  • External membranes to AS 4654
  • Door sill and drain detailing
Balcony waterproofing

More Waterproofing Services in Illawong

  • Rooftop & Flat Roof Waterproofing

    Flat concrete roofs and roof decks re-membraned so they shed water instead of ponding and leaking into the floor below.

  • Box Gutter Waterproofing

    We line and seal box gutters, sumps and outlets so heavy storms drain away instead of overflowing into the building.

  • Lift Shaft Waterproofing

    Lift pits and shafts sealed against groundwater to protect lift equipment and stop corrosion in apartment and commercial buildings.

  • Laundry Waterproofing

    Laundries leak quietly behind machines and tubs. We waterproof the floor and walls properly so the problem doesn't come back.

  • Floor Waterproofing

    Remedial floor membranes for wet areas, ground-floor slabs and commercial floors, matched to the substrate so water can't move through.

  • Tile Injection Waterproofing

    Shower leaking but tiles still solid? Resin injected through the grout lines can seal it in a day, without a full renovation.

  • Planter Box Waterproofing

    Planter boxes and podium gardens lined with root-resistant membranes and proper drainage so they don't leak into walls or car parks.

  • Brick Wall Waterproofing

    Damp brickwork lets water track inside. We treat and seal masonry walls to keep moisture out for good.

  • Water Leak Detection

    Before any work is quoted, we pinpoint where the water is coming from – saving you from paying to fix the wrong thing.

Local, Licensed Waterproofers

What Makes Us a Trusted Waterproofing Company in Illawong

Fully Licensed Team

Every Illawong job is done under Waterproofing Licence 36763C, so the work is recognised by insurers, certifiers and strata committees.

Backed for 7 Years

Our waterproofing comes with a 7-year written warranty – long after the tiles go down, we still stand behind the work.

We Find the Real Cause

Water rarely shows up where it gets in. A free inspection traces the leak to its source before we quote, so you pay to fix it once.

Certified Work

Wet areas are waterproofed to AS 3740 and outdoor areas to AS 4654, and you receive a compliance certificate when we finish.

Residential to Commercial

We work for homeowners, landlords, builders, strata managers and businesses across Illawong and nearby suburbs.

Clear, Written Quotes

A free written quote that explains what’s wrong, the system we’ll use and the price – no surprises when the job is done.

Know the Warning Signs

Signs Your Illawong Property Needs Waterproofing

These are the early warning signs that waterproofing has failed. Catch them early and the repair is usually smaller.

  • Pool water level keeps dropping

    More loss than evaporation usually means a failed membrane or joint.

  • Water in the basement or garage

    Groundwater is getting past below-ground walls or joints.

  • Wet patches below retaining walls

    Water is passing through the wall instead of draining behind it.

  • Loose, drummy or cracked tiles

    The bond has failed because the bed underneath is wet.

  • Mould, musty smells or black grout

    Water is sitting behind tiles or inside the wall cavity.

  • Stains on the ceiling below

    A bathroom, balcony or roof above is leaking through the slab.

How We Work

Simple, Clear and Done Properly – Our Process

Clear, careful and fully certified – our process for every Illawong property.

01

Free Inspection

We visit your Illawong property and trace the leak to its source.

02

Written Quote

A clear quote with the cause, the system and the price.

03

Prepare & Apply

Surfaces prepared and primed, then the right membrane applied at full thickness.

04

Test & Certify

Flood tested where suitable, with a compliance certificate and 7-year warranty.

Service Area

Waterproofers Covering All of Illawong NSW 2234

We provide waterproofing throughout Illawong and the surrounding Sutherland Shire. Our team travels from our Liverpool base and works across Sydney every week, so inspections are easy to arrange.

AB Sydney Waterproofing 24 Copeland St, Liverpool NSW 2170 0449 725 455 avo.bghdoean@gmail.com
Shower recess walls and floor waterproofed with a blue membrane by AB Sydney Waterproofing
Still have questions?Call 0449 725 455
Waterproofing Illawong FAQs

Common Questions About Waterproofing in Illawong

Yes. We waterproof large family homes on sloping blocks to townhouses throughout Illawong NSW 2234 and the surrounding Sutherland Shire. Call 0449 725 455 to book a free inspection.

If you’re topping up much more often than usual in mild weather, or notice damp ground, cracks or loose tiles around the pool, it’s worth an inspection.

Yes. Where excavating outside isn’t practical, we use negative-side systems applied from inside the basement to resist water pressure through the wall.

Yes – we hold Waterproofing Licence 36763C. Using a licensed contractor protects you if you need to make an insurance claim, get strata approval or sell the property.

It depends on the size of the area, how much damage the leak has caused and the membrane system needed. Every job starts with a free inspection and a written, itemised quote, so you know the exact price before work begins.

Waterproofing Tips & Guides

Helpful Waterproofing Guides

View all waterproofing guides

Water Getting In Somewhere in Illawong?

Talk to a licensed waterproofer today – free inspection and written quote.