Expert Waterproofing Across Sydney
Bathroom, balcony and roof waterproofing for Sydney homes and businesses.
Materials and suppliers
Why choose us
J.K Waterproofing Solutions provides residential and commercial waterproofing across Western Sydney and the wider Sydney region. We work with homeowners, builders, strata managers and property managers on bathroom renovations, leaking balconies, roof membranes and remedial waterproofing. Our approach begins with understanding the surface, the condition of existing materials and the way water reaches the affected area.
A stain on a ceiling or a damp wall does not always identify the source of a leak. Tell us when the moisture appears, which repairs have already been attempted and whether other trades have inspected the property. We consider those details before discussing preparation and a waterproofing system. For a new build or renovation, involve us before the finished surfaces are installed so the membrane, drainage and trade sequence can be planned together.
Our licensed and insured waterproofing team has more than a decade of experience. Explore our services and project photographs to understand the work we do, then contact us with your Sydney suburb and project details for a free, no-obligation quote.
Our waterproofing services in Sydney.
Different surfaces need different waterproofing systems. Explore bathroom, balcony and roof waterproofing, torch-on membranes and concrete crack injection. Each service page explains the preparation, access and repair details to discuss before work begins. Selecting a membrane starts with assessing the substrate and intended use, rather than choosing a coating from appearance alone.
Bathroom Waterproofing
Plan waterproofing for showers, bathroom floors and other wet areas before tiling. Junctions, floor wastes and pipe penetrations need to connect with the membrane. For leaking showers or renovations, share the room layout and any plumbing findings so we can discuss preparation and a suitable waterproofing scope.
Torch On Membranes
Discuss a bonded torch-on membrane for suitable concrete roofs and terraces. Existing finishes, slab condition, outlets and upstands affect the installation. Our project example shows removal of a failed membrane, concrete preparation and a replacement two-layer system; your roof needs its own assessment before a system is selected.
Concrete Crack Injection
Water can travel through concrete cracks and construction joints. We assess the location, moisture and accessible surfaces before discussing crack injection or another repair method. Tell us when water appears and whether the crack changes over time. Structural concerns may require an engineer's assessment alongside the waterproofing enquiry.
Roof Waterproofing
Roof and podium waterproofing needs to account for sunlight, drainage, penetrations and the rooms below. A ceiling stain may be some distance from the water entry point. Share photos taken from a safe location and details of earlier repairs so we can discuss inspection, preparation and membrane replacement options.
Balcony Waterproofing & Repairs
Arrange an assessment for leaking balconies, failed membranes, damp door thresholds or staining below a slab. Balcony waterproofing repairs may involve removing affected finishes, preparing the surface and replacing the membrane. For strata properties, discuss access, approval and resident arrangements early so the repair scope can be planned clearly.
Our waterproofing assessment and installation process
- STEP 1
Tell us about it
Tell us your Sydney suburb, property type, the surface involved and any signs of water ingress. Photos and approximate dimensions help explain the work. For a bathroom renovation or new build, include the current stage and the planned tiling schedule.
- STEP 2
Assess the surface
We discuss the existing substrate, drainage, junctions and accessible faces of the affected area. Previous repairs and building reports can help clarify the problem. An assessment informs whether local repairs, membrane replacement or another waterproofing approach needs consideration.
- STEP 3
Agree the approach
Confirm the proposed waterproofing scope, preparation, materials and sequence before work starts. For strata or commercial properties, include the person responsible for approval. Discuss access to neighbouring rooms and any other trades whose work connects with the membrane.
- STEP 4
Prepare properly
Surface preparation can involve removing failed finishes, cleaning, grinding and addressing suitable concrete defects. A membrane needs a compatible substrate. The preparation required depends on the existing surface and the selected system, rather than a fixed routine for every property.
- STEP 5
Apply the system
The waterproofing system must connect across the main surface, corners, outlets and penetrations. Layering and drying periods depend on the materials and site conditions. Outdoor roof and balcony work also needs suitable weather and access throughout the installation.
- STEP 6
Plan the next stage
Discuss curing, protection and the next trade before tiling or returning the area to use. Fresh waterproofing can be damaged by early foot traffic or later work. Keep the agreed instructions available to everyone involved in the renovation or repair.
Waterproofing across Sydney and the Hills District
Explore waterproofing information for Parramatta, Blacktown, Penrith, Liverpool and Campbelltown, along with the Hills District, North Shore and other Sydney service areas. Our local pages explain practical enquiry details for bathrooms, balconies, roofs and concrete repairs. Whether you manage an apartment, renovate a home or coordinate a building project, tell us your suburb and any site-access requirements. We can discuss the service you need and the information required for an assessment.
SYDNEY SERVICE AREAParramatta
Waterproofing for Parramatta apartments, renovations and commercial spaces, with access planned from the start.
SYDNEY SERVICE AREAPenrith
Roof, bathroom and garage-floor enquiries across Penrith, with practical advice on preparation and timing.
SYDNEY SERVICE AREALiverpool
Practical waterproofing planning for Liverpool homes, shared buildings and commercial premises.
SYDNEY SERVICE AREACampbelltown
Bathroom, roof and balcony waterproofing for Campbelltown projects, from renovation planning to leak enquiries.
SYDNEY SERVICE AREABlacktown
Waterproofing and epoxy-floor enquiries for Blacktown, with the surface condition and everyday use in focus.
Roof membrane replacement: preparation and finish
This J.K Waterproofing Solutions roof project involved removing an existing torch-on membrane, grinding and repairing the concrete, then installing a new two-layer system. The work illustrates why surface preparation and a compatible replacement membrane should be considered together. Drag the divider to compare the original roof photograph with a visualisation of the completed membrane aligned to the same viewpoint. Visit the original Instagram project for the supplied photographs and work details, or explore our projects page for more waterproofing examples. Your property needs its own assessment of the substrate, drainage and existing repairs before a similar approach can be proposed.
What our customers say.
“The team came when they said and completed the job to a highly profesional standard in the agreed time frame.”
“[J.K Waterproofing Solutions] are legends. Jawad and his team came in clutch for a leaky balcony.”
“James was a breath of fresh air. He always arrived when he said he would, returned calls and was very punctual.”
“Jawad is a great communicator, he kept me abreast of the situation at all times.”
“Great service. Thrilled with the work on our leaking balcony. Very professional and excellent attention to detail.”
“Highly recommend … 5 STAR.”
Frequently Asked Questions
Which parts of Sydney do you cover?
We provide waterproofing across Western Sydney and the wider Sydney region, including Parramatta, Blacktown, Penrith, Campbelltown, Bondi and Mosman. Our service-area pages also cover the Hills District, North Shore and nearby suburbs. Call with your location, building type and the surface that needs attention to confirm current availability. For apartments and strata buildings, tell us about parking, lift access and any restrictions on inspection times.
What should I send with my waterproofing enquiry?
Include your suburb, property type, approximate surface size and photographs taken from a safe position. Describe where moisture appears, when it happens and whether earlier repairs have changed the problem. For bathroom renovations, tell us whether the old tiles have been removed and whether plumbing is moving. For balconies and roofs, mention access to the affected area and the rooms below. Plans and existing inspection reports can also help explain the proposed work.
How do you choose a waterproofing system?
The suitable waterproofing method depends on the substrate, exposure, drainage, expected movement and condition of the surface. A bathroom beneath tiles has different requirements from an exposed concrete roof or balcony. We discuss those conditions and the assessment needed before proposing preparation and materials. Applying another coating over a failed system may leave the underlying cause unresolved, so the condition of existing finishes matters as much as the choice of a new membrane.
Do you provide residential and commercial waterproofing?
Yes. We discuss waterproofing for homes, apartment buildings, commercial properties and building projects across Sydney. Homeowners may need help with a leaking shower or balcony, while builders need membrane work coordinated with preparation and finishing trades. Strata and property managers should share access arrangements, previous reports and approval requirements. Our project photographs show examples of roof membrane replacements and common-area work; each enquiry needs a scope that reflects the individual property.
Can you repair a leaking balcony?
Yes. J.K Waterproofing Solutions provides balcony repairs and waterproofing for Sydney homes and strata properties. We consider the membrane, slab condition, thresholds, wall junctions and drainage before discussing the repair scope. Depending on the findings, work may involve removing affected finishes, preparing the substrate and installing a replacement membrane. A stain below the balcony can be some distance from the leak. Share photos of both areas and records of earlier repairs where available.
How long does waterproofing take?
Timing depends on the size of the area, surface preparation, access, the chosen materials and curing requirements. Outdoor waterproofing also depends on suitable weather. Removing failed finishes or coordinating concrete repairs can add work before the membrane is applied. Share your intended schedule and the dates planned for tiling or other trades so we can discuss a realistic sequence. Confirm when the surface can be used again and how it should be protected while curing.
LET’S TALK ABOUT YOUR PROJECT
Contact Us
Tell us about the surface, the problem and your Sydney suburb. We’ll help you work out the next step.