
Professional Waterproofing in Sydney
Dominex Pty Ltd provides critical wet-area preparation and waterproofing systems to prevent water damage and ensure the longevity of your property.
Fully Insured
Workmanship Guarantee
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Reliable Waterproofing Solutions for Your Property
Water damage is one of the most significant threats to the structural integrity and value of your property. At Dominex Pty Ltd, we provide professional waterproofing services designed to create an impermeable barrier against moisture in critical areas such as bathrooms, kitchens, laundries, and balconies.
Our approach to waterproofing is meticulous. We understand that the success of any wet-area renovation depends entirely on the quality of the underlying waterproof membrane. That’s why we use only high-performance, industry-certified materials and follow rigorous application standards to ensure complete protection.
Whether you are renovating an existing bathroom or building a new commercial facility, our team has the expertise to handle projects of all scales. We work closely with homeowners, builders, and strata managers across Greater Sydney to deliver waterproofing results that stand the test of time.
As a licensed and insured contractor, we provide the documentation and peace of mind you need for your property improvement project. Don't risk the high cost of water damage—invest in professional waterproofing from the experts at Dominex.
Our Waterproofing Services
We provide comprehensive waterproofing solutions to protect every part of your property.
Bathroom Waterproofing
Complete wet-area protection for showers, floors, and walls before tiling.
Kitchen & Laundry
Critical waterproofing for kitchen splashbacks and laundry wet zones.
Balcony & Terrace
External membrane systems to prevent water ingress into structural areas.
Joint & Corner Sealing
Specialized treatment for high-movement areas and junctions.
Planter Boxes
Durable waterproofing for outdoor garden features and structures.
Leak Investigation
Professional assessment to identify and address existing water ingress issues.
Surface Preparation
Ensuring substrates are clean, dry, and sound for membrane application.
Protective Coatings
Advanced systems for commercial and residential property protection.
Our Waterproofing Process
A reliable waterproof seal requires a systematic approach. Here is how we ensure your property is protected.
Site Assessment
Detailed inspection of the area to determine substrate condition and requirements.
Preparation
Cleaning, grinding, and repairing surfaces to ensure optimal membrane adhesion.
Bond Breakers
Installation of bond breakers at all internal corners and floor-to-wall junctions.
First Coat
Application of the primary waterproof membrane layer according to specifications.
Reinforcement
Incorporation of reinforcing fabric in critical areas for added durability.
Second Coat
Application of the final membrane layer to create a seamless, waterproof barrier.
Curing & Testing
Allowing the system to cure properly before final inspection and handover.
Why Choose Dominex
We deliver professional waterproofing results with integrity and expertise.
Expert Application
Our team is trained in the latest waterproofing techniques and standards.
Premium Membranes
We use only high-quality, industry-leading waterproofing products.
Licensed & Insured
Fully licensed and insured contractors for your absolute peace of mind.
Detailed Quotations
Clear, written quotes outlining the scope and materials for your project.
Reliable Service
We stick to schedules and communicate clearly throughout the process.
Quality Guarantee
We stand behind our waterproofing work with a workmanship guarantee.
Frequently Asked Questions
Project Gallery
Explore our portfolio of completed projects, showcasing professional waterproofing and property improvements across Sydney.









Areas We Service
Based in Kogarah, we provide professional waterproofing services across Greater Sydney, including:
Ready to Protect Your Property?
Contact Dominex Pty Ltd today for a detailed, obligation-free quotation on your waterproofing project.
