Service Details
Water seeping through your basement walls is more than a nuisance. It’s a warning sign. Cracks, dampness, and mold often point to rising hydrostatic pressure, and if left untreated, that pressure can weaken your foundation and lead to costly structural damage.
Welcome to S&S Remedial Services, your trusted waterproofing company. We are experts in negative-side waterproofing serving Brisbane and the Gold Coast delivering proven solutions for damp and leaking foundations without the need for costly exterior excavation.
Our residential floor and wall leak repairs provide a reliable, cost-effective way to keep your space dry and usable all year round. Say goodbye to mold, water damage, and musty odors, and hello to a healthier, more valuable home.
Why Choose Us?
Complete Waterproofing Solutions
Rather than relying on a single product, our negative-side waterproofing approach may combine PU injection, epoxy injection, hydro epoxy waterproofing membrane, liquid membrane systems, and joint sealing for more complete protection.
NCC Compliant, QBCC Licensed and 20+ Years of Industry Experience
Our experience in waterproofing and structural remediation allows us to address both the water ingress and the defects contributing to it, including cracking, deteriorated joints, and damaged concrete.
Comprehensive Leak Diagnosis
We assess where the water is entering, whether through cracks, construction joints, porous concrete, masonry, or areas affected by hydrostatic pressure, before recommending the appropriate repair system.
Suitable for Difficult-to-Access Areas
Negative waterproofing is particularly useful for basements, foundations, retaining walls, lift pits, cellars, and underground structures where excavation or external waterproofing may not be practical.
Tailored Systems for Each Structure
Every leak behaves differently. We select the commercial and residential waterproofing system according to the substrate, moisture pressure, crack movement, accessibility, and condition of the existing structure.
Long-Term Protection Against Water Ingress
Properly installed negative membrane waterproofing helps reduce recurring leaks, dampness, mould growth, musty odours, and deterioration of internal finishes, helping keep below-ground areas drier and more usable.
Complete Negative Waterproofing Solutions
Polyurethane Resin Injection for Active Water Leaks
PU resin injection is one of SS Remedial’s strongest complementary negative-side solutions. Resin is injected through cracks, construction joints, voids, penetrations, or leaking interfaces from the accessible side.
Epoxy Concrete Crack Injection
For suitable dry and structurally stable concrete cracks, epoxy resin injection can be used to bond the concrete and restore structural continuity. This differs from polyurethane injection, which is primarily intended to stop active water ingress.
Negative Membrane Waterproofing
Applied to the accessible internal face of basement walls, floors, retaining walls, lift pits, foundations, underground car parks, and other below-ground structures using hydro epoxy waterproofing membrane.
Construction Joint and Cold Joint Waterproofing
Construction joints and cold joints are common pathways for hydrostatic water ingress. SS Remedial’s injection capability covers leaking construction joints and cold joints, allowing them to be treated internally without necessarily excavating the external side.
Rising Damp and Capillary Moisture Treatment
Where moisture is rising through masonry rather than simply penetrating laterally, S&S Remedial can combine negative-side waterproofing with a chemical Damp Proof Course.
Hybrid Injection + Membrane Waterproofing
Rather than relying on a coating alone, active cracks and joints are first treated using PU or other appropriate injection methods, followed by a continuous negative-side membrane over the broader wall or floor area.
Our Negative Waterproofing Process
Inspection and Moisture Assessment
Identify the source of water ingress, affected areas, cracks, joints, penetrations, and signs of hydrostatic pressure or rising damp.
Junction Detailing and Priming
Form reinforced coves where needed, detail vulnerable transitions, and apply the appropriate primer for the selected waterproofing system.
Prepare the Substrate
Remove failed coatings, contaminants, efflorescence, and loose material, then grind or prepare the substrate to create a clean, sound surface.
Negative-Side Membrane Application
Apply the specified negative membrane waterproofing or hydro epoxy waterproofing in the required coats and thickness to create continuous internal protection.
Crack, Joint and Leak Repairs
Treat active leaks, cracks, construction joints, wall-floor junctions, and penetrations using polyurethane injection, epoxy injection, pressure grouting, sealants, or repair mortar as required.
Final Inspection and Protection
Check membrane continuity, detailing, curing, and overall system performance, then install protective coatings, drainage, or sump management where required.
COMPLIANCES
Protect your basement and building foundation with professional interior side waterproofing solutions you can rely on.
Stop Water Problems Before They Get Worse
From residential homes to commercial and strata buildings, we deliver tailored negative waterproofing systems built for long-term performance.
Brand We Trust
Testimonials
These guys do such an excellent job and provided a great roof leak repair service. I’ve used them for roof membrane waterproofing on a couple of houses now and wouldn’t go with anyone else. Thanks, S&S Remedial Services!
– Luke Harris
Stoked with the prompt rooftop waterproofing service and quality workmanship! Shawn and his expert team delivered the best waterproofing for our rooftop—highly recommend them to anyone looking for reliable, top-tier results.
– Dan Hamilton
I cannot fault these guys. They handled the concrete rooftop waterproofing on our property in Brisbane. Fantastic communication, streamlined process, and top-quality crew and workmanship. Highly recommend!
– John Becham
I was dealing with persistent water leaks on my roof and needed urgent help. I searched for a local waterproofing company and found S&S Remedial. From the first call to the final application, they were professional, fast, and incredibly thorough. My roof is now completely sealed and leak-free, and I couldn’t be happier with the results. Highly recommend them to anyone facing waterproofing roof issues.
– Lance Carlton
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
Why Negative Side Waterproofing Matters?
Cost-Effective:
Avoid the high foundation sealing costs and disruption of exterior excavation. Our negative side waterproofing specialist save you time and money without compromising on effectiveness.
Minimally Invasive Internal Waterproofing:
No need to tear up your landscaping or driveway—we work entirely from the inside using an interior foundation wall waterproofing method, completing most jobs in just a few days with minimal mess.
Proven Results:
By sealing the interior and installing sump pumps or French drains as needed, we control water intrusion and manage hydrostatic pressure and groundwater seepage from inside the basement.
Health Benefits:
A dry-waterproofed foundation and basement reduces humidity, preventing mold growth and improving indoor air quality. Protect your family’s health and avoid costly repairs down the line.
Increased Home Value:
A waterproofed foundation or basement walls adds usable square footage – perfect for a home office, gym, or entertainment area – boosting your property’s resale value.
Project Gallery
Industrial Concrete Basement PU Injection
Foundation Membrane Waterproofing
Concrete Resin Injection
Residential Interior Floor & Wall Waterproofing
Residential Basement Wall Waterproofing
Residential Basement Membrane Waterproofing
Internal Foundation Membrane Waterproofing
Commercial Concrete Basement PU Injection
Frequently Asked Question
Can you waterproof a basement from the inside?
Yes. Internal basement waterproofing is one of the main applications for negative hydrostatic pressure waterproofing. It can be particularly useful when excavation around the outside of the basement is difficult, expensive or impossible.
The existing concrete needs to be properly assessed and prepared so the waterproofing system can withstand moisture and hydrostatic pressure from behind the substrate.
What is hydrostatic pressure in waterproofing?
Hydrostatic pressure is the pressure created by water pushing against a structure. In below-ground areas such as basements and retaining walls, groundwater can place significant pressure on concrete walls and floors.
Because negative hydrostatic pressure waterproofing may need to resist this pressure from behind the waterproofing layer, choosing the right waterproof membrane, cementitious waterproofing system or remedial waterproofing solution is important.
What is the difference between positive and negative side waterproofing?
Positive side waterproofing is installed on the same side of the structure as the water source, helping prevent moisture from entering the substrate in the first place.
Negative side waterproofing is installed on the opposite side, typically from inside the building. It is often used for basement waterproofing, retaining wall waterproofing, concrete crack injection repairs and below-ground waterproofing where external access is difficult or impractical.
How long does negative membrane waterproofing last?
The lifespan depends on the waterproofing system, substrate condition, installation quality and ongoing movement or water pressure affecting the structure.
A professionally installed system using products designed for negative pressure waterproofing can provide a long-term solution, but the underlying cause of water ingress should always be properly investigated first.
Why is it important to waterproof basement walls in Brisbane?
Can negative side waterproofing stop water leaks?
Yes, a correctly specified negative pressure waterproofing system can be used as part of a solution for active or recurring water ingress. However, simply coating over a wet wall is rarely enough.
Cracks, construction joints, penetrations and other leak paths may require concrete leak repairs, crack injection, joint sealing or waterproof repair work before the main waterproofing system is applied.
What products are used for negative side waterproofing for Basement, Foundation and Lift Pit?
The appropriate product depends on the structure and site conditions. Systems may include liquid waterproofing membranes, crystalline waterproofing, hydro epoxy waterproofing membranes, concrete injection systems, joint sealants and injection repair products.
Do I need a licensed waterproofing contractor for foundation 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.
Is negative side waterproofing suitable for Gold Coast properties?
Yes, negative waterproofing contractors are perfect for Gold Coast homes, apartment buildings and commercial properties experiencing basement leaks, retaining wall leaks, concrete water ingress or below-ground moisture problems.
A site assessment is the best way to determine whether negative waterproofing, positive-side waterproofing, drainage improvements, concrete crack injection repairs or a combination of treatments is appropriate.