Our Services
We are one of the most trusted specialists in concrete leak repair in Sydney. Our reputation has been built through years of delivering reliable, long-lasting solutions that effectively stop water leaks and restore the integrity of concrete structures.
- Basement Leak Repair
- Concrete Leak Repair
- Block & Brick Leak Repair
Professional Concrete Leak Repair Services in Sydney
We are the market leader in the elimination of water ingress with our key point of difference being our full-service offering. From inspection right down to completion you will have attention to detail that is not offered elsewhere. With a wealth of experience in the manufacturing and product design sectors, we know that the key is attention to every detail. We treat every surface like a piece of furniture and deliver on performance and visual appearance as one. We deliver flawless results that stand the test of time.
We provide a full-service solution with our multi-step system with a very simple and transparent 25-year warranty provided on completion. This is our core service, and we achieve a 100% success rate on our projects. If water ingress is your problem, you have found your solution, and we will give it to you on a lump sum basis with no extra charges for return visits. We know how to stop water, permanently.
- What we offer
Non-Invasive Injection. Multi-Layer Precision.
Balcony Leak Repair
We provide specialised, non-invasive balcony leak repair services for residential and commercial properties throughout Sydney, using advanced polyurethane resin injection systems to stop active water ingress at its source — without unnecessary demolition.
Basement Leak Repair
We deliver reliable basement leak repair services across Sydney, using advanced injection technology to seal cracks in concrete walls and slabs. Our specialised resin systems block water pathways inside the structure, preventing further moisture intrusion without the need for excavation or demolition.
Concrete Crack Repair
Specialised concrete leak repair in Sydney using advanced injection waterproofing (Polyurethane Resin Injection) to seal cracks and stop water ingress at its source, without demolition.
Lift Shaft leak Repair
We provide specialised lift shaft leak repair services in Sydney, sealing water entry points in concrete walls and joints using advanced crack injection methods. Our targeted repair approach stops active leaks within lift pits and shafts without the need for excavation or structural disruption.
Basement Dampness Repair
We address basement moisture and dampness issues using advanced injection waterproofing systems designed to block water pathways within concrete structures. Our solutions help eliminate persistent damp conditions and protect basements from long-term water damage without invasive construction work.
Block & Brick Leak Repair
We repair water leaks in block and brick structures by injecting specialised waterproofing resins into cracks, joints, and porous areas where water is penetrating. This method seals hidden leak paths within the masonry, helping prevent further water intrusion while maintaining the structural integrity of the wall.
Issues We Treat With our system.
Areas We Service Around Sydney
We regularly provide Concrete leak repair Services in:
Parramatta
Five Dock
Strathfield
Ryde
Balmain
Sydney cbd
These surrounding suburbs each present slightly different structural and soil conditions, which is why our repair systems are adapted to local environments across NSW.
Our Concrete Leak Repair Process
At DS Projects, we use advanced polyurethane resin injection to permanently eliminate water ingress. This method is widely recognised in structural remediation across Australia.
25-Year Warranty
Our system is backed by a 25-year warranty, offering long-term confidence for property owners across Sydney, Australia.
We conduct detailed moisture tracing to determine whether water is entering through:
- Cold joints
- Construction joints
- Wall-to-slab junctions
- Hairline concrete cracks
- Pipe penetrations
- Retaining wall interfaces
Properties in Parramatta often experience wall-floor joint leaks due to hydrostatic pressure, while homes in Balmain frequently show vertical shrinkage cracks.
Small injection ports are installed along the crack or joint line. Unlike excavation-based systems, this process does not require digging up driveways, landscaping, or internal flooring.
This is ideal for properties in Ryde and Strathfield where external access is limited.
We inject hydrophobic polyurethane resin under controlled pressure. Once inside the crack, the resin reacts with moisture and expands — forming a flexible, watertight seal within the concrete structure.
The resin:
- Expands to fill micro-fractures
- Bonds permanently with concrete
- Remains flexible during structural movement
- Withstands hydrostatic pressure
- Stops active flowing leaks
This method is commonly used in infrastructure repair projects across NSW due to its durability and performance under pressure.
In areas like Sydney Olympic Park, where large commercial basements are common, we reinforce longer joint lines to ensure full structural integrity.
No demolition.
No excavation.
No membrane reinstallation.
Once complete, the surface is restored with minimal visible impact.
Driving Directions to Our Drummoyne Office
From Parramatta
From Ryde
From Five Dock
From Balmain
From Strathfield
From Parramatta
- Take Church Street south toward the M4.
- Merge onto A44 (Parramatta Road) toward Sydney.
- Continue for approximately 14 km.
- Turn right onto Victoria Road at Five Dock.
- Continue 3 km toward Drummoyne.
- Our office is on the left near Drummoyne Oval.
- Free parking is available along nearby side streets.
- Approximate drive time: 30–35 minutes.
From Ryde
- Take Devlin Street toward Victoria Road.
- Merge onto Victoria Road (A40) heading toward Sydney.
- Cross the Gladesville Bridge and continue toward Drummoyne.
- Our office is located on the left before the Iron Cove Bridge.
- Parking is available near Birkenhead Point.
- Approximate drive time: 20–25 minutes.
From Five Dock
- Take Great North Road toward Victoria Road.
- Turn left onto Victoria Road heading toward the city.
- Continue approximately 2 km.
- Our office is on the left before Drummoyne Oval.
- Street parking is available nearby.
- Approximate drive time: 10 minutes.
From Balmain
- Take Darling Street toward Victoria Road.
- Merge onto Victoria Road heading west toward Drummoyne.
- Continue past the Iron Cove Bridge exit.
- Our office is located on the right-hand side of the commercial strip.
- Parking available near Lyons Road intersection.
- Approximate drive time: 10–15 minutes.
From Strathfield
- Take Homebush Road toward Parramatta Road.
- Turn onto Parramatta Road (A44) heading east.
- Turn left onto Victoria Road at Five Dock.
- Continue toward Drummoyne.
- Our office is on the left near Birkenhead Point.
- Free street parking available.
- Approximate drive time: 20–25 minutes.
What Local Clients Say
Frequently Asked Questions
The cost of concrete leak repair in Sydney depends on several factors, including the length of the crack, the location of the leak, access to the affected area, and the condition of the structure. Because every project is different, we conduct a detailed inspection before providing a clear lump-sum quote. At DS Projects, our pricing includes the full repair process with no hidden charges for return visits.
Polyurethane resin injection works by injecting specialised resin directly into cracks, joints, or voids within concrete or masonry. When the resin comes into contact with moisture, it expands and forms a flexible watertight seal inside the structure. This blocks the pathways where water enters, stopping the leak at its source without the need for excavation or demolition.
No. One of the key advantages of our system is that it is non-invasive. Our injection repair process allows us to seal leaks from within the structure without removing tiles, digging around foundations, or demolishing surfaces. This approach minimises disruption while delivering long-lasting results.
Yes. All of our concrete leak repair solutions are backed by a 25-year warranty once the project is completed. This warranty reflects the durability of our polyurethane injection system and the confidence we have in the quality of our work.
Common signs of water ingress in concrete structures include:
- Damp or wet walls in basements
- Water dripping through cracks
- Peeling paint or bubbling plaster
- Musty smells or mould growth
- Water stains on ceilings below balconies
- Persistent moisture in lift shafts or underground areas
If you notice any of these issues, it’s best to arrange an inspection so the source of the leak can be identified and repaired before the damage spreads.
Why Choose DS Projects?
We are trusted across Sydney and NSW for long-term, engineered leak elimination — not temporary fixes.
25-Year Warranty
Non-invasive resin injection
No excavation required
Specialists in structural water ingress elimination
Partners of Australian Institute of Waterproofing (AIW)
Members of ACCRA
Compliant with Complibuild standards
Call Now for Concrete Leak Repair Services
If you’ve noticed damp walls, pooling water, or recurring leaks in your basement, don’t wait for the next storm.
- Call DS Projects today on 1800 727 531.
- Visit us at Suite 2, 109 Victoria Rd, Drummoyne NSW.
- Or request an inspection through Fill up the form
Permanent solutions. No excavation. Backed by 25 years.
