Retaining wall waterproofing on a home construction site
Waterproofing Licence: 36763C

Earlwood Waterproofers – Bathroom & Basement Leak Repairs Done Right

From a single leaking bathroom to a full basement re-waterproof, we do it properly the first time across Earlwood – licensed, certified and guaranteed for 7 years.

  • Licensed waterproofers
  • 7-year warranty
  • Free inspection
  • AS 3740 & AS 4654
Bathroom and shower waterproofing before tiling Earlwood NSW 2206
Waterproofers Earlwood

Your Trusted Waterproofing Company in Earlwood

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

Properties across Earlwood and the wider inner west and Canterbury area range from Californian bungalows and brick homes to walk-up units on hilly streets. Each brings its own waterproofing challenges – older wet areas built before modern membranes were required, outdoor areas exposed to sun and storms, and below-ground walls that hold back wet soil.

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.

Earlwood Waterproofing Services

Complete Waterproofing Solutions for Earlwood

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

Shower recess and bathroom floor waterproofed before tiling Showers & en-suites

Earlwood Bathroom Waterproofing

Whether you’re renovating or chasing a leak, the membrane under the tiles is what keeps water where it belongs. We install certified wet-area membranes with bond-breakers, reinforced corners and properly sealed penetrations, then issue a compliance certificate for your records.

  • Leak repairs before you renovate or sell
  • Floor wastes, corners and junctions sealed
  • Certified membranes for renovations
Bathroom waterproofing
Below-ground wall waterproofing before backfill Basements

Basement & 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
Balcony waterproofing membrane applied before new tiles Terraces

Balcony, Terrace & Courtyard Waterproofing

A balcony over a living room or garage needs a membrane that handles full sun, heavy rain and movement. We prepare the slab properly, correct falls where needed, and detail every edge, outlet and threshold so water drains away instead of finding its way inside.

  • Strata and owners’ corporation repairs
  • Balustrade fixing and edge sealing
  • Re-tiling after waterproofing
Balcony waterproofing
Brick wall treated and sealed against damp Masonry

Brick Wall & Damp Waterproofing

Solid brick walls can draw moisture up from the ground or let rain through, causing flaking paint, salt deposits and musty rooms. We treat and seal brick walls, parapets and chimneys in Earlwood so moisture stays out of the masonry.

  • Damp-proofing for older homes
  • External brick sealers
  • Render and paint protection
Brick wall waterproofing

More Waterproofing Services in Earlwood

  • 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

    Box and eaves gutters re-membraned so storm water runs off the roof instead of spilling into walls and ceilings.

  • Lift Shaft Waterproofing

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

  • Laundry Waterproofing

    A properly sealed laundry floor and upturn protects floors, walls and neighbouring rooms from washing machine and tub leaks.

  • Floor Waterproofing

    Concrete and screed floors waterproofed for wet areas, ground floors and commercial spaces where water must stay out of the slab.

  • Tile Injection Waterproofing

    Epoxy resin injected under existing tiles seals a leaking shower without demolition – a faster, lower-cost fix when the tiles are still sound.

  • 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.

  • Swimming Pool Waterproofing

    Membranes for concrete pools and spas, applied before tiling on new pools or as a remedial fix for a pool that's losing water.

  • 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

Why Choose Our Waterproofers in Earlwood?

Licensed & Accountable

We hold Waterproofing Licence 36763C and put our name to every membrane we install – no unlicensed subcontractors.

Homes, Strata & Commercial

From a single bathroom to a full apartment block or commercial roof, we plan work around residents, tenants and business hours.

Upfront Pricing

Our free quote spells out the problem, the solution and the cost, so you can decide with all the facts.

7-Year Warranty

Every job in Earlwood is backed by a written 7-year warranty. If something isn’t right, we come back and fix it.

Diagnosis Before Quoting

We test and trace the leak first, so the quote covers what’s actually failing – not guesswork.

Built to Code

We follow AS 3740 inside and AS 4654 outside, and hand over the paperwork your certifier, insurer or buyer will ask for.

Know the Warning Signs

Common Leak Signs We See in Earlwood

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

  • 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.

  • 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.

  • Stains on the ceiling below

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

  • White salt on brick or concrete

    Efflorescence means water is moving through the masonry.

How We Work

How We Waterproof Your Earlwood Property

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

01

Free Inspection

We visit your Earlwood 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

Servicing Earlwood NSW 2206 & Surrounds

Our licensed waterproofers service all of Earlwood and the wider inner west and Canterbury area. Wherever you are in the suburb, we can inspect, quote and complete the job with minimal disruption.

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 Earlwood FAQs

Common Questions About Waterproofing in Earlwood

Yes. We waterproof Californian bungalows and brick homes to walk-up units on hilly streets throughout Earlwood NSW 2206 and the surrounding inner west and Canterbury area. Call 0449 725 455 to book a free inspection.

Often, yes. If the tiles are still well bonded, tile injection seals the leak from underneath without demolition. If the membrane has failed completely, we’ll explain why a strip-out is the better long-term fix.

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.

Yes. We inspect the leak, explain what’s causing it and give you a written quote at no cost and with no obligation.

Waterproofing Tips & Guides

Helpful Waterproofing Guides

View all waterproofing guides

Got a Leak in Earlwood?

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