Waterproofing & Leak Prevention
Prevent the Leak. Restore the Damage.
Coastal Restoration provides professional waterproofing, leak assessment , waterproof membrane repairs, balcony waterproofing, bathroom waterproofing, rooftop waterproofing, and remedial waterproofing across Byron Bay, the Northern Rivers, Tweed Heads, and the Gold Coast.
Waterproofing Services
Waterproofing Specialists
Bathroom & Wet-Area Waterproofing
Comprehensive sealing for internal wet zones to prevent structural rot and moisture penetration.
Balcony & Terrace Waterproofing
Ultra-durable membrane systems designed for high-exposure outdoor surfaces and traffic areas.
Remedial Waterproofing
Structural repair and injection techniques to fix existing leak issues in established buildings.
External Waterproofing
Defending foundations and retaining walls from hydrostatic pressure and groundwater ingress.
Failed Membrane Repairs
Identification and surgical repair of breached systems to restore full water resistance.
Leak & Moisture Investigation
Advanced thermal and sensor mapping to find hidden leaks where water first enters the structure.
Waterproofing Before Tiling
The critical layer. Precision application ensuring a seamless bond and lifelong leak prevention.
Water Damage Repairs
From structural drying to restoration, we fix the aftermath of failed waterproofing systems.
WATERPROOFING
BATHROOM & WET-AREA
Critical waterproofing for high-moisture zones using liquid membranes and high-build resins.
BALCONY & TERRACE
UV-stable, durable waterproofing designed for coastal exposure and thermal expansion.
REMEDIAL & EXTERNAL
Structural fixes for building envelopes, retaining walls, and sub-floor areas.
LEAK ASSESSMENT
Advanced moisture mapping and diagnostic tools to find the source of water
FAILED MEMBRANE REPAIR
Removing and replacing degraded systems to restore full moisture integrity.
WP BEFORE TILING
Ensuring a flawless substrate seal before aesthetic finalization. AS3740 compliant.
WATER DAMAGE REPAIR
Structural restoration of areas affected by leaks, from timber framing to subfloors.
REMEDIAL GROUTING
Specialist epoxy and polymer re-grouting for leaking showers without tile removal.
HOW WATERPROOFING WORKS
01
ASSESSMENT
We identify the exact source of water ingress using moisture mapping and thermal imaging before recommending a solution.
02
REMEDIAL
We remove damaged substrates and failed membranes, preparing the area for a superior, long-lasting barrier.
03
STRUCTURAL
We apply high-performance liquid or sheet membranes, specifically engineered for Australian conditions and wet-area standards.
04
FINAL
We perform rigorous flood testing and final quality inspections to ensure the integrity of the water-tight seal before tiling.
FAQ
Why is my shower leaking even though the tiles look fine? Can waterproofing prevent mould?
Tiles and grout are not waterproof. In most cases, a leaking shower is caused by a failed waterproof membrane behind the tiles. We identify the cause of the leak and recommend the most effective long-term waterproofing solution. Yes. Waterproofing prevents water from entering the building structure, significantly reducing the conditions that allow mould to grow. Repairing the waterproofing issue is often the first step in preventing recurring mould problems.
Can you investigate the source of a leaking balcony or bathroom? What waterproofing membrane is best?
Yes. We carry out professional waterproofing inspections to determine the source of water ingress. We assess the waterproof membrane, drainage, falls, joints, flashings, penetrations, and surrounding construction to identify why the leak has occurred before recommending the most appropriate repair. The best waterproofing system depends on the application, substrate, movement, UV exposure, and Australian Standards. We select the most suitable waterproof membrane for each project to ensure long-term performance.
Do I need to replace my bathroom if the waterproof membrane has failed? How long does waterproofing last?
Not always. Depending on the extent of the damage, localised waterproof membrane repairs may be possible. If the membrane has reached the end of its service life or has failed extensively, a complete replacement may be the best long-term solution. A professionally installed waterproof membrane can last 10–20 years or longer depending on the membrane system, installation quality, exposure to the elements, and ongoing maintenance.
What causes waterproofing to fail? Is waterproofing required under Australian Standards?
Common causes include poor installation, ageing membranes, structural movement, incorrect falls, cracked grout, failed sealants, UV exposure, blocked drainage, and building movement. A professional inspection is essential to determine the exact cause. Yes. Waterproofing must comply with the National Construction Code (NCC) and the relevant Australian Standards, including AS 3740 for domestic wet areas and other applicable standards depending on the project.
What areas can be waterproofed? How much does waterproofing cost?
We provide waterproofing for bathrooms, showers, balconies, rooftops, terraces, laundries, planter boxes, retaining walls, podium decks, basements, and other residential and commercial wet areas. The cost depends on the size of the area, the existing substrate, the type of waterproof membrane required, site access, and whether remedial repairs are necessary. Contact us for a professional inspection and obligation-free quote.
Do you repair leaking balconies? Do you provide waterproofing for commercial properties? Do you offer waterproofing for new construction and renovations? Why choose Coastal Restoration for waterproofing?
Yes. We specialise in balcony waterproofing, waterproof membrane repairs, leak investigations, remedial waterproofing, and complete waterproofing system replacements. We provide services for residential homes, apartment buildings, commercial properties, body corporates, builders, developers, strata managers, and property managers. We work with homeowners, builders, and developers on new construction, renovations, and remedial projects that comply with Australian Standards. Coastal Restoration combines construction experience with specialist knowledge. We focus on identifying the root cause of ingress, delivering compliant systems, and providing long-lasting solutions across Byron Bay, the Northern Rivers, Tweed Heads, and the Gold Coast.
Prevent the Leak. Restore the Damage.
Waterproofing & Water Damage Specialists. Coastal restoration experts for emergency leaks and repairs.