Service Details
Water leaking through basement walls, floors, cracks or construction joints can lead to persistent dampness, mould, efflorescence, concrete deterioration and damage to internal finishes. Because below-ground structures are continually exposed to soil moisture, groundwater and hydrostatic pressure, simply coating the visible damp area rarely provides a lasting solution.
S&S Remedial provides comprehensive basement waterproofing solutions designed around the actual source of water ingress. Depending on the condition of the structure, we may use positive-side waterproofing, negative-side waterproofing, polyurethane or epoxy crack injection, liquid membranes, joint sealing and water-management measures. The result is a tailored waterproofing system that helps keep your basement dry, protects the building structure and reduces the risk of recurring moisture damage.
Our Waterproofing Solutions
Negative-Side Basement Waterproofing
When excavation outside the basement is impractical, negative-side waterproofing can be installed from inside the structure. The waterproofing membrane is applied to the internal face of basement walls or floors and is designed to resist moisture entering from behind the substrate.
Positive-Side Basement Waterproofing
Where the exterior basement wall can be accessed, positive-side waterproofing is generally the preferred approach because it stops groundwater before it penetrates the structure.
Polyurethane Crack Injection
Active basement leaks frequently occur through cracks, construction joints and small voids in concrete. For wet or actively leaking cracks, polyurethane injection waterproofing can be used to inject resin deep into the water pathway.
Epoxy Crack Injection
Where a concrete crack is dry, stable and requires structural repair, epoxy injection may be recommended.
Liquid Membrane Waterproofing
Liquid-applied membrane waterproofing create a continuous protective barrier across prepared concrete, blockwork or masonry surfaces.
Basement Damp Proof Treatment
Engineered to prevent rising damp, protect structural steel from moisture-induced corrosion, and stop internal surface deterioration, it delivers long-term compliance with AS 3740 and NCC standards
Why Choose Our Waterproofing?
QBCC-Licensed Waterproofing Specialists
S&S Remedial provides professional remedial and below-ground waterproofing services using systems selected according to the structure, moisture conditions and requirements of the project.
More Than 20 Years of Industry Experience
Our experience extends beyond membrane application to concrete repairs, crack injection, rising damp treatment and remedial waterproofing. This allows us to approach a leaking basement as a complete moisture-management problem rather than simply covering the visible symptoms.
We Find the Source Before Treating the Problem
Basement waterproofing should begin with diagnosis. Water may be entering through a crack even though the visible damp patch appears several metres away.
Multiple Waterproofing Methods
Not every basement problem can be solved using one membrane or one product. S&S Remedial can combine waterproofing membranes, polyurethane injection, epoxy injection, joint sealing, concrete repair, damp-proofing and drainage measures when the project requires a more comprehensive solution.
Residential, Commercial and Strata Waterproofing
We provide basement and below-ground waterproofing solutions for residential homes, apartment buildings, strata properties, commercial buildings, underground car parks, plant rooms, storage areas, lift pits and foundation structures.
Tailored Waterproofing Systems
The waterproofing specification is selected according to the actual condition of the property rather than applying the same treatment to every basement.
Our Basement Waterproofing Process
Basement Inspection
We inspect the basement walls, floor slab, cracks, joints, penetrations and surrounding areas for evidence of water ingress, dampness, efflorescence, mould, coating failure and concrete deterioration.
Waterproofing Installation
The selected waterproofing system is applied with particular attention to wall-floor junctions, corners, cracks, construction joints, penetrations and termination points where waterproofing failures commonly develop.
Surface Preparation
Unsound coatings, contamination, efflorescence and damaged concrete may need to be removed. It may include: grinding, cleaning, crack preparation, concrete repair, joint preparation, coating removal and priming.
Water Management
Basement Crack Repair
Final Inspection
Once the waterproofing works are complete, the treated areas and critical details are inspected and tested to confirm that the specified system has been completed correctly.
COMPLIANCES
Protect your basement and building foundation with professional waterproofing solutions you can rely on.
Stop Water Problems Before They Get Worse
07 2812 2774
From residential homes to commercial and strata buildings, we deliver tailored waterproofing systems built for long-term performance.
Brand We Trust
Testimonials
“Water had been appearing along the bottom of our basement wall whenever we had prolonged rain. The team investigated the wall and floor junction and explained the recommended waterproofing approach clearly. We appreciated that they focused on identifying the source rather than simply applying another coating.”
Michael R., New Farm
“We previously tried several surface repairs, but moisture continued returning through the basement wall. The problem areas were inspected carefully before the crack treatment and waterproofing work was carried out. The whole process was clearly explained.”
Daniel T., Paddington
“Our downstairs area had persistent dampness and salt deposits along the walls. After assessing the area, the team recommended a combination of waterproofing treatments rather than relying on one generic coating. We were very pleased with how the job was handled.”
Sarah M., Burleigh Heads
“We had water entering one of our basement walls during heavy rain and external access was extremely limited. The team explained the internal remedial waterproofing options and kept us informed throughout the work.”
James P., Broadbeach Waters
S&S Remedial provided excellent roof membrane waterproofing for our house. The team was professional, efficient, and the results were flawless. No more leaks—just peace of mind, rain or shine!
Daniel Reid
The waterproofing of rooftop was handled professionally from beginning to end. The results have held up flawlessly through intense rain, the team worked efficiently, and the membrane system was of excellent quality.
Chole Fraser
Which waterproofing system have the long-term success?
Exterior Basement Waterproofing Methods
Exterior waterproofing is ideal for new builds or major renovations. Though costly and labor-intensive, it provides 20+ years of protection by blocking water before it enters.
Interior Basement Drainage Systems
Interior drainage is ideal for existing homes with water issues. Perforated pipes along the basement perimeter direct water to a sump pump. Lasting 15–25 years with minimal installation disruption, it effectively manages hydrostatic pressure.
Polyurethane Basement Crack Injection and Repair
Polyurethane crack injection seals leaking cracks and cold joints in basement walls or floors by injecting expanding foam from the inside. The flexible foam adapts to foundation movement, making it ideal for negative-side waterproofing. When applied correctly, it lasts 10–20 years.
Epoxy Basement Crack Injection and Repair
Epoxy-based waterproofing membranes are ideal for interior basement walls in damp environments. Applied as epoxy or cementitious coatings, they form a moisture and vapor barrier that reduces humidity and prevents mold. With proper maintenance, they typically last 10–15 years.
Combine Methods
S&S Remedial basement waterproofing experts recommend combining techniques—such as interior drainage, polyurethane injection, and epoxy injection—for the most successful long-term basement water leak repairs.
Project Gallery
Industrial Concrete Basement PU Injection
Basement Injection Waterproofing
Basement Resin Injection
Residential Basement Floor & Wall Waterproofing
Residential Basement Wall Waterproofing
Residential Basement Membrane Waterproofing
Basement Membrane Waterproofing
Commercial Concrete Basement PU Injection
Frequently Asked Question
What is hydrostatic pressure?
As pressure increases, water looks for weak points such as cracks, joints and porous areas through which it can enter the structure.
How much does an interior basement waterproofing cost in Brisbane or Gold Coast?
The average cost of waterproofing concrete basement walls or floors for a small project (20–30 sqm) typically ranges between $800 and $3,000, depending on the scope and condition. S&S Remedial offers an obligation-free site inspection, followed by an honest, detailed quotation tailored to your project. Upon completion, you’ll receive the best basement waterproofing service backed by a workmanship warranty for long-term peace of mind. If you need the leaking basement waterproofing cost per square foot, contact S&S Remedial at 0468760750 or 0407560227.
Is Interior Basement Waterproofing Right for My Basement Leaking Problem?
- Best for finished or hard-to-access exteriors – works well when landscaping, driveways, or patios would make exterior work expensive.
- Good for managing water already entering – captures and redirects leaks through interior drains or sump pumps.
- Less costly than exterior waterproofing – generally more budget-friendly for homeowners.
- Effective under hydrostatic pressure – relieves water pressure against basement walls and floors.
Why is it important to waterproof basement walls in Brisbane?
Can polyurethane injection stop basement leaks?
The resin is injected into the water pathway and reacts within the crack to help seal the leak.
Where moisture is widespread across a wall rather than concentrated around a crack, injection may need to form part of a broader waterproofing system.
What is the difference between epoxy and polyurethane crack injection?
Epoxy is a rigid material generally used for appropriate dry structural cracks where bonding and structural repair are required.
Do I need a licensed waterproofing contractor for basement leaking problem?
Yes, in Queensland, you do need a licensed waterproofing contractor for concrete injection work—especially when it’s part of a waterproofing system.
🛠️ Why Licensing Matters
- Compliance with Australian Standards: Waterproofing work must meet standards like AS 3740-1994, which governs waterproofing in wet areas.
- Building Code Requirements: Waterproofing is considered a regulated building activity under the Queensland Building and Construction Commission (QBCC).
- Insurance and Warranty: Licensed contractors typically offer workmanship guarantees and are insured, which protects you if something goes wrong.