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

Waterproofers in Jannali – Stop Bathroom & Pool Leaks for Good

Professional bathroom and pool waterproofing for homes, units and businesses in Jannali. Licensed team, written quotes and a 7-year warranty on every job.

  • Licensed waterproofers
  • 7-year warranty
  • Free inspection
  • AS 3740 & AS 4654
Balcony waterproofing on a family home Jannali NSW 2226
Jannali Waterproofing Specialists

Your Trusted Waterproofing Company in Jannali

Need dependable waterproofing in Jannali? Our licensed team provides expert Jannali waterproofing for houses, apartments, townhouses and commercial buildings. We repair leaking bathrooms, pools, basements and more using proven membrane systems, with every job backed by a written 7-year warranty.

From family homes on hilly streets to townhouses and units, the properties we waterproof in Jannali 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.

We waterproof internal wet areas to AS 3740 and external areas to AS 4654, prepare every surface properly before the membrane goes on, and finish with a compliance certificate where required. That’s how we can back our work with a written 7-year warranty.

Our Services in Jannali

Complete Waterproofing Solutions for Jannali

We offer the full range of waterproofing in Jannali, with particular focus on bathroom, pool, basement and balcony work – the areas where water causes the most damage when membranes fail.

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

Bathroom & Shower Waterproofing Jannali

Most bathroom leaks start at the same few weak points: cracked grout, a poorly sealed floor waste, or a membrane that stops short at the wall. We find exactly where water is escaping and fix it – with tile injection when the tiles are sound, or a new membrane when they’re not.

  • Shower recesses, en-suites and full bathrooms
  • Membrane to AS 3740 with compliance certificate
  • Tile injection when tiles are sound
Bathroom waterproofing
Concrete pool shell prepared for waterproofing Backyard pools

Pool Leak Repairs Jannali

Pools lose water through cracked shells, failed construction joints and leaking fittings. We find which one it is, repair it properly and apply a pool-grade membrane suited to constant immersion and chlorinated water.

  • Shell crack and joint repairs
  • Re-waterproofing before re-tiling
  • Fittings and penetrations sealed
Pool waterproofing
Below-ground wall waterproofing before backfill Retaining walls

Jannali Basement Waterproofing

Damp patches, salt and moss on a retaining wall, or water across a garage floor after rain, mean water is getting through instead of draining away. We find the entry points and seal walls, slabs, joints and lift pits properly.

  • Membrane before backfill on new builds
  • Damp garages and lower rooms
  • Negative-side repairs where digging isn’t possible
Dincel wall waterproofing
Balcony waterproofing membrane applied before new tiles Outdoor areas

Balcony, Terrace & Courtyard Waterproofing

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 Jannali

  • Rooftop & Flat Roof Waterproofing

    Remedial roof membranes for homes, apartments and commercial buildings, built to handle UV, heat and heavy downpours.

  • Box Gutter Waterproofing

    Long box gutters overflow inside when their lining fails. We seal gutters and outlets to keep water on the outside.

  • 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

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

  • Tile Injection Waterproofing

    Tile injection stops many shower leaks without ripping out the bathroom, so you avoid weeks of 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

    External brick walls, parapets and chimneys treated against damp and salt so moisture stops reaching the inside of the building.

  • Water Leak Detection

    Not sure where the water is coming from? We trace leaks through slabs, walls, showers and balconies before any work is quoted.

Local, Licensed Waterproofers

Why Choose Our Waterproofers in Jannali?

Licensed Waterproofers

All work is carried out under Waterproofing Licence 36763C. Ask to see it on site – a licensed contractor protects you, your insurer and your strata.

Written 7-Year Guarantee

You get a written 7-year warranty on our workmanship, so you can renovate, rent or sell with confidence.

No Guesswork

Stains and damp patches can be metres from the real leak. We track the water back to where it enters before recommending a fix.

Australian Standards

Internal wet areas to AS 3740 and external membranes to AS 4654, with a compliance certificate for your records, sale or strata.

Any Size of Job

One leaking shower or a whole building – we scale the team and schedule to suit, with minimal disruption.

No Hidden Costs

You’ll know the scope and price in writing before we start. The price we quote is the price you pay for that scope.

Know the Warning Signs

Common Leak Signs We See in Jannali

Water damage gets more expensive the longer it runs. If you notice any of these, book a free inspection.

  • 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.

  • 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.

  • Stains on the ceiling below

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

How We Work

How We Waterproof Your Jannali Property

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

01

Free Inspection

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

02

Written Quote

A written, itemised quote with no obligation.

03

Prepare & Apply

Proper preparation first – cracks repaired, corners and joints reinforced – then the membrane goes on.

04

Test & Certify

We test, hand over the compliance certificate and register your 7-year warranty.

Service Area

Waterproofing Across Jannali NSW 2226

From homes and units to commercial buildings, we cover every part of Jannali NSW 2226 and the surrounding Sutherland Shire. Call to book a free inspection at a time that suits you.

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 Jannali FAQs

Your Jannali Waterproofing Questions, Answered

Yes. We waterproof family homes on hilly streets to townhouses and units throughout Jannali NSW 2226 and the surrounding Sutherland Shire. Call 0449 725 455 to book a free inspection.

Yes. We apply a certified membrane to AS 3740 before tiling and provide a compliance certificate for your records, your builder and any future sale.

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 – 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

Learn More About Waterproofing

View all waterproofing guides

Got a Leak in Jannali?

Licensed waterproofers – free inspection, written quote and a 7-year warranty.