A short description of where you’ve noticed water, your suburb, and whether it’s a house, apartment, or commercial site helps. If you can add photos of the shower corners, grout lines, screen edges, and any visible water marks outside the shower, that’s even better. We’ll then advise availability and confirm what to expect on the day.

Waterproofing Services Sydney

Contractor Licence 364828C · Mon–Sat 6:30am–11pm · Sydney-Wide Callouts · 20+ Years Combined Experience

Waterproofing Services in Sydney means stopping water at the source before it turns into loose tiles, swollen skirting, mould, or a bigger repair bill. At Leaking Shower Repairs, we handle bathroom and wet-area waterproofing as well as balcony and external waterproofing where applicable. You’ll get a fixed on-site quote, clear next steps, and work completed to a professional standard, including a waterproofing certificate where the job requires it.

Licensed contractor (Contractor Licence Number: 364828C)

Late trading hours and same-day callouts where available

Residential, commercial, and strata experience

Options that can reduce disruption (including solutions that may avoid tile removal where suitable)

Clear scope, prep, and curing guidance before we start

Same Day Service

Open Till Late

Sydney Wide

Quality Service

Quick Booking Form

Trust Built Through Clear Quotes, Low-Drama Scheduling, And Site Respect

Most people call a waterproofing team after they’ve already had a frustrating experience: a “quick fix” that didn’t last, messy work areas, or unclear scope that balloons mid-job.

Our goal is simple: quote clearly, turn up when agreed, protect the area, and explain what’s happening in plain language. If your timeline depends on access, curing, or follow-on trades, we’ll tell you early so you can plan.

Experience That Helps You Avoid Repeat Waterproofing Failures

Waterproofing fails most often at the details: junctions, penetrations, wastes, screens, step-downs, and wall-to-floor transitions. After years of leaking shower and wet-area work across Sydney homes, units, and commercial bathrooms, we know where issues hide and how to plan the job so it lasts.

You’ll see this in how we approach the “boring” parts that matter: substrate condition checks, falls and drainage considerations, bond breaker placement, compatible primers and membranes, and curing times that aren’t rushed.

Shower area before and after applying waterproofing solution, showing improved surface protection and sealing against water leaks

Expertise In Wet Areas, Balconies, And High-Moisture Zones

Waterproofing application on concrete pool steps, showcasing a newly coated, smooth surface designed for enhanced water resistance.

Waterproofing is never just “paint on a membrane”. The right system depends on the area, the substrate, the movement expected, and how water actually behaves in that room or outdoor zone. We commonly work across:

Shower recesses, bathroom floors, and wall junctions

Laundries and powder rooms where overflow risk exists

Balconies and exposed areas needing external-grade detailing

Commercial bathrooms with higher traffic and cleaning cycles

Strata jobs where documentation and access planning matters

If your job is linked to an existing leak, we’ll also flag contributing issues like cracked grout, failed silicone, or movement at the screen line, and advise what should be addressed at the same time.

Authority Backed By Licensing And Job-Ready Documentation

When waterproofing work applies, you need confidence the work is being done by a properly licensed contractor and documented correctly. Leaking Shower Repairs operates under Contractor Licence Number: 364828C and can provide a waterproofing certificate where required for applicable waterproofing works.

For property managers and strata, we can also support the admin side by keeping the scope clear, aligning access with residents, and confirming what areas are included before the job starts.

What You Get With Our Waterproofing Work

A good waterproofing job is as much about what you don’t see as what you do. Here’s what we focus on so the membrane system has the best chance to perform as intended:

Site inspection and moisture-risk check (where water is coming from and why)

Preparation guidance (cleaning, removal of failed materials, substrate checks)

Compatible waterproofing system selection for the area and conditions

Correct detailing at corners, junctions, and penetrations

Clear curing and re-use advice so the system isn’t compromised

Documentation where required, including a waterproofing certificate for applicable works

If the surrounding finishes also need attention (like re-grouting or sealing), we can coordinate this so the result is consistent — not a patchwork of trades.

Who It’s For

This page suits you if you’re in Sydney and you need waterproofing handled by a team that’s used to real-world sites and scheduling. Typical clients include:

Homeowners with bathroom leaks, water staining, or recurring mould

Unit owners needing compliant work in a bathroom or laundry

Property managers coordinating access and documentation

Small commercial sites where bathrooms see heavy use

Strata committees managing common-area moisture risks

If your issue is mainly surface failure around the shower, you may also want sealing and finishing support that pairs well with waterproofing, such as shower sealing and caulking fixes or tile grouting repairs.

Problems We Fix And Outcomes You Can Expect

Waterproofing is often called in when the symptoms have already started. The key is diagnosing the pathway and selecting the right scope so you’re not paying twice. Common issues we address:

Water escaping the shower recess and tracking under tiles

Failed junctions at wall-to-floor corners and door jambs

Cracked grout and movement that opens micro-gaps over time

Leaks around wastes, penetrations, and screen lines

Balcony leaks that cause dampness below or staining at the edge

Loose or hollow tiles that hold moisture and keep the area damp

For balcony-related moisture issues, you may also find it helpful to review balcony leak repair options so the solution matches the exposure level.

Our Process

01

Book A Site Visit

We schedule a time that suits your access needs. Same-day callouts may be available, and we can advise timing on booking.

02

Inspect And Confirm The Scope

We identify likely leak pathways, check critical details, and confirm what’s included (and what isn’t).

03

Quote On Site

Pricing is fixed and quoted on site so you’re not guessing based on photos or generic rate cards.

04

Prepare The Area

We protect the workspace, remove failed sealants where needed, and confirm substrate readiness.

05

Apply Waterproofing System And
Detail The Critical Points

Junctions, corners, penetrations, and transitions are treated carefully because they’re the common failure points.

06

Curing, Re-Use Guidance, And
Documentation

We explain when the area can be used again and provide a waterproofing certificate where applicable to the waterproofing works.

If you’re planning a larger bathroom upgrade and want waterproofing coordinated with broader works, bathroom renovation support may be a better fit.

Areas And Availability Across Sydney

We service Sydney and surrounding suburbs, with callouts arranged to suit access and building requirements. Trading hours are Mon–Sat 6:30am–11pm, and after-hours service can be arranged if requiredExamples of where we’re commonly booked:

Eastern Suburbs

North Shore

If you’re unsure whether your property type needs special access planning (particularly for strata), book in and we’ll confirm what’s required before we arrive.

How To Choose The Right Waterproofing Contractor

A quick comparison checklist can save you a lot of stress later. When you’re comparing waterproofing contractors in Sydney, look for:

Licensing clarity: they should be happy to share licence details

Scope clarity: you should know exactly which areas are included

Detailing approach: corners, penetrations, and waste junctions matter most

Curing guidance: if someone says “use it straight away”, ask why

Documentation: confirm whether a certificate applies to your job

Finish coordination: ask how grout, silicone, and screens will be handled around the waterproofed area

If your project includes tiles, make sure the installer and waterproofing approach match the finishes you’re using. For finish-related work, you can also review our tiling services to keep the job coordinated.

Frequently Asked Questions About Waterproofing Services

If the leak is caused by localised failure (like a junction detail or deteriorated sealant), repair or partial remediation may be suitable. If the membrane system is compromised across the wet area, full waterproofing is often the safer option. We’ll inspect, explain what we’re seeing, and quote a scope that matches the cause — not just the symptom.

Sometimes, depending on the leak pathway and the condition of the existing finishes. Some leaking shower fixes can be done with less disruption, but not every bathroom is a candidate. We’ll confirm whether the substrate and details can be addressed properly without removal, and we’ll be upfront if tile removal is the only sensible route.

Timing varies by area size, prep needs, and curing requirements. Many jobs can be started the same day or scheduled quickly, and we’ll confirm timing when you book and again at quote. The key factor is allowing proper curing so the membrane system isn’t compromised before it’s put back into use.

We’ll outline the waterproofing area(s), surface prep expectations, critical detailing points, and any related finishing work that’s required to complete the job properly. Pricing is fixed and quoted on site, so you know the scope and cost before the work begins. If exclusions apply, they’ll be written into the quote clearly.

Where waterproofing work applies and certification is required for the scope, we can issue a waterproofing certificate. We’ll confirm what documentation applies during the inspection so you know what you’ll receive at handover, especially if the work is for strata or compliance purposes.

Waterproofing can reduce moisture intrusion, which can help prevent conditions that allow mould to grow. That said, mould can also come from ventilation issues, plumbing leaks, or persistent condensation. We’ll point out likely contributors during inspection and recommend what should be addressed alongside waterproofing.

Common causes include movement at junctions, poor surface prep, rushed curing, incompatible products, or missed detailing around penetrations and wastes. Sometimes the issue is not the membrane alone but the surrounding finishes (grout, silicone, screen line) letting water track into vulnerable points. Our inspection focuses on those high-risk details first.

Yes. We work across houses, units, and townhouses, and we’re familiar with access requirements and noise considerations. We’ll also confirm whether strata approval is needed and how to plan the job around resident access so it’s smoother for everyone involved.

Yes. Commercial bathrooms, amenities, and high-traffic wet areas often need a tougher approach to prep and detailing due to heavier use and more aggressive cleaning cycles. We’ll confirm the environment, expected wear, and scheduling requirements, then quote a scope that fits the site.

We operate under Contractor Licence Number: 364828C. You can also independently check a contractor’s licence status using the NSW government tools. When you book, have your address and a brief description of symptoms ready so we can schedule the right visit length.

In NSW, licensing and qualifications matter because waterproofing is a regulated area of building work in many contexts. A properly licensed contractor is more likely to understand compliance requirements and documentation expectations. If you’re unsure what applies to your job, we’ll explain it at the inspection and confirm what’s required for the scope you need.

You can, but it’s important to understand what has already been applied, whether it has cured correctly, and whether the existing system is compatible with what comes next. We can inspect and advise on the safest path forward, but in some cases the best result requires removing incomplete or incompatible layers before continuing.

Share your Sydney address, the wet area type (shower, bathroom floor, laundry, balcony), how long the issue has been happening, and what you’ve noticed (water stains, loose tiles, mould, damp smell). Photos help, but they’re not required — we’ll confirm everything on site and then provide a clear quote.

If you’re in Sydney or surrounding suburbs, you’re likely within our service area. The fastest way to confirm is to send your suburb through the booking form or call, and we’ll confirm availability and the right visit time for your property type.

Why Choose Leaking Shower Repairs

If you want waterproofing done properly the first time, it helps to choose a team that treats prep and detailing as the main job — not the add-on. We’ve built our process around Sydney conditions, mixed property types, and the practical realities of busy bathrooms and strata access. For background on who we are and how we work, see how our team approaches wet-area work.

Licensed contractor with clear identification (Licence 364828C)

Late trading hours (Mon–Sat 6:30am–11pm) for easier access

Fixed, on-site quoting so scope is clear before work starts

Residential, commercial, and strata experience

Options to reduce disruption where suitable (including non-invasive approaches when appropriate)

Practical advice on curing times and re-use to avoid setbacks

Want to understand how the team works day-to-day? See our approach and service background on the meet the team and service story.

Next Steps To Stop The Leak

If you’re seeing stains below, pooling water, cracked grout, or recurring damp after rain, don’t leave it to guesswork. We’ll inspect, explain what’s most likely causing the leak, and provide a clear on-site quote.

Call 1300 488 660