Sydney's Waterproofing Experts

Seal It.
For Good.

Detail Focused. Built to Last.

Specialist waterproofing and construction services for Sydney's residential, commercial, and mixed-use developments. Licensed. Experienced. Reliable.

Get a Free Quote Our Services
500+
Projects Completed
2018
Established
100%
Licensed & Insured
NSW
Wide Coverage
About Us

Who We Are

Advance Seal is a Sydney-based waterproofing contractor that has been in operation since 2018. We work across residential, commercial, and mixed-use developments, bringing the same level of detail and quality to every project. Agile, and solutions-focused. We get it right the first time.

LocationSuite G.07, Building A, 23 Princes Road East, Auburn NSW 2144
ServicingGreater Sydney and surrounding NSW regions
ABN39 623 656 217
Our Team

The People

AS

Adel Sari

Director

Adel is a waterproofing specialist who oversees operations, system selection, and quality control on every Advance Seal project. He works directly with builders and consultants from detailing through to final inspection, and has led basement tanking design and construction on major Sydney builds including the W Hotel Reborn project and the Sydney Fish Market.

EN

Emile Nehme

Director

Emile leads project delivery at Advance Seal. With a trades background across waterproofing, tiling, and remedial works, he runs the day-to-day side of the business, coordinating sites, subcontractors, and clients from initial scope through to completion.

What We Do

Specialist Services

From high-rise balconies to basement tanking, we provide comprehensive waterproofing solutions that protect your building long-term.

01

Crack Repairs

Structural and non-structural crack injection, epoxy grout repairs, and surface sealing for concrete and masonry.

02

Basement Waterproofing

Tanking membranes, drainage systems, and positive-side waterproofing for below-ground structures.

03

Balcony & Rooftops

Trafficable membranes, expansion joint sealing, and protective coatings for residential and commercial balconies.

04

Podium Waterproofing

Planter box systems, car park slabs, and high-load podium waterproofing for complex structures.

05

Wet Areas

Bathroom, laundry, and kitchen waterproofing to AS 3740 standards using premium membrane systems.

06

Remedial Works

Diagnosis and repair of failed waterproofing systems, concrete cancer treatment, and building restoration.

Why Choose Us

Built on Trust

In operation since 2018, Advance Seal brings precision, reliability, and genuine craftsmanship to every engagement, from a single wet area to a large-scale commercial project.

Start Your Project
AS
01

Licensed Waterproofers

Fully licensed and insured, meeting all NSW Fair Trading requirements. Contractor Licence #453751C.

02

Premium Products

We use only proven, industry-approved waterproofing systems from trusted Australian suppliers.

03

Workmanship Warranty

All work is backed by a written workmanship warranty for your complete peace of mind.

04

On-Time Delivery

We work to your project timeline and communicate clearly at every stage of the job.

Our Work

Recent Projects

At Advance Seal we pride ourselves on the long-term relationships we build with our clients. A lot of our work comes from repeat engagements with builders, developers, and head contractors who trust us to deliver consistent quality across multiple projects.

Featured Projects

1 / 12
Gartner Rose · Jan 2025

Parsley Bay Reserve

Basement waterproofing, roof and bathroom waterproofing, and tiling works at the Vaucluse heritage reserve.

1 / 3
Gartner Rose

Central Station

Membrane works at the Sydney CBD heritage transport hub.

1 / 2
BY Group

Randwick Barracks

Membrane installation across army facility wet areas.

1 / 4
Toga

Bondi Balcony

Balcony remedial works and waterproofing membrane installation for the Hall St development in Bondi Beach.

1 / 3
Paynters

Overseas Passenger Terminal

Membrane works at the iconic Circular Quay passenger terminal in The Rocks.

1 / 9
Graphite Project

UTS Space Lab

Epoxy flooring and Electrostatic Discharge (ESD) flooring across 2,500m² for the Space Machines Company facility at UTS.

1 / 3
Ventia Corporation

St Mary's Cathedral

Waterproofing to seating area over 1,000m² at the heritage cathedral precinct in Sydney CBD.

Additional Recent Projects

BY Group
Ultimo TAFE
Membrane installation.
BY Group
Wollongong TAFE
Membrane installation.
Toga
Macquarie Park
Basement injection, investigation, and remedial works.
Toga
Balmain
Basement injection, investigation, and remedial works.
Toga
Hurstville
Basement injection, investigation, remedial works, and tiling.
Kander Group
Vaucluse
Basement injection, investigation, and remedial works.
Boral
Preston Concrete Plant
Injection works to underground water egress.
Total Construction
16–24 Cope Street, Redfern
Waterproofing and epoxy flooring.
Collaborative
The Greens, The Entrance
Waterproofing and tiling works.
Get in Touch

Request a Quote

Whether it's a single wet area or a large commercial project, contact us for a free, no-obligation quote.

📞
Mobile
0450 388 585
✉️
Email
adel@advancecc.com.au
📍
Head Office
Suite G.07, Building A, 23 Princes Road East, Auburn NSW 2144