Waterproofing in Preston is rarely a one-size job, because Preston is not a one-size suburb. Inside the City of Darebin, roughly 9km north of the CBD, postcode 3072 covers Victorian terraces, post-war weatherboard, Californian bungalows south of Bell Street and a growing band of new apartments and townhouses. A membrane that suits a 1930s bathroom sitting on timber floors is not the membrane that suits a new balcony slab. We work across all of it, and the system we recommend follows the building, not a template.
Waterproofing services we provide in Preston
We cover both sides of Preston’s housing mix: internal wet areas and external structures.
- Bathroom waterproofing, including full bathroom renovation waterproofing
- Internal waterproofing for laundries and other wet areas
- Balcony and terrace waterproofing
- Basement and retaining wall waterproofing
- Rooftop and external waterproofing
- Professional screeding so water actually reaches the drain
- Commercial waterproofing for local businesses and strata properties
Each of those has its own service page with the full detail on how the system is built up and where it is used. This page is about what those jobs look like in Preston specifically. Most Preston work sits under residential waterproofing. If you want the technical rundown on a particular system, follow the link through to that servic
0433 201 995
Comprehensive Waterproofing Services
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Swimming Pool WaterproofingYour swimming pool represents a significant investment that deserves proper protection. At 3K Waterproofing, we specialise in thorough swimming pool waterproofing services throughout Melbourne and Greater Melbourne. Our expert team makes certain your pool remains watertight, preventing costly structural damage and water loss whilst maintaining the beauty of your outdoor oasis. Whether you’re building a […]
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Sheet Membrane WaterproofingSheet membrane waterproofing is a highly effective method of protection that involves applying pre-formed sheets of waterproof material to surfaces like concrete slabs, foundations, balconies, and rooftops. Once installed, these membranes create a durable, impermeable barrier that prevents water ingress and protects structures from long-term damage. Sheet membranes are ideal for both above-ground and below-ground […]
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Basement WaterproofingMelbourne’s unpredictable weather patterns and seasonal rainfall make basement waterproofing vital for protecting your home’s structural integrity. At 3K Waterproofing, we specialise in thorough basement waterproofing services that safeguard your property from moisture damage, rising damp, and foundation issues. Our expert team services all Melbourne suburbs, delivering reliable protection that stands the test of time. […]
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Balcony & Terrace WaterproofingBalconies are some of the most exposed areas of your property. When storms or sudden downpours occur, it really pays to have the right waterproofing measures in place. This is where we step in. From apartment blocks to office spaces, we offer affordable balcony waterproofing services across Melbourne. These services are handled by licensed contractors, […]
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Commercial WaterproofingIs your business vulnerable to water-related damage? The situation may be more serious than you think! Luckily, 3K Waterproofing is here to deliver professional waterproofing solutions for local offices, retail spaces, industrial buildings, and strata properties across the city of Melbourne. Drawing on years of knowledge and experience, our licensed team understands the unique demands […]
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Bathroom WaterproofingLooking to prevent water ingress, moisture and mould? We offer a wide range of bathroom waterproofing services in Melbourne. From existing bathrooms to new builds, our expert team can ensure the bathroom has complete protection for years to come. We’re a family-owned and operated business that takes great pride in the standard of our service. […]
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Foundation WaterproofingWhen Melbourne’s unpredictable weather strikes, your home’s foundation bears the brunt. At 3K Waterproofing, we specialise in professional foundation waterproofing services that safeguard your property from costly water damage. Our expert team delivers lasting protection using advanced membrane systems and proven techniques, making certain that your home stands strong against moisture infiltration year after year. […]
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Green Roof WaterproofingTransform your Melbourne property with professional green roof waterproofing that protects both your building and the environment. At 3K Waterproofing, we specialise in creating sustainable rooftop gardens and living roof systems that withstand Melbourne’s unpredictable weather while improving your property’s value and environmental footprint. Our expert team delivers thorough waterproofing services specifically designed for green […]
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Planter Box WaterproofingTransform your outdoor spaces with confidence knowing 3K Waterproofing professionally waterproofs your planter boxes. We specialise in protecting Melbourne gardens from water damage using advanced membrane systems that keep your structures sound and your plants thriving. From rooftop gardens in South Yarra to backyard planters in Frankston, our expert team delivers lasting protection that stands […]
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Retainer Wall WaterproofingMelbourne’s unpredictable weather patterns and varying soil conditions make retaining wall waterproofing essential for protecting your property. At 3K Waterproofing, we specialise in thorough waterproofing services that prevent water damage, soil erosion, and structural deterioration. Our expert team delivers premium retaining wall protection across Melbourne, from Geelong to Glen Waverley, using advanced membrane systems and […]
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Rooftop WaterproofingFrom storms to sudden downpours, rooftops are constantly vulnerable to the elements–especially if they don’t have the proper waterproofing measures in place. The good news? We’re ready to step in and lend a helping hand. We offer affordable rooftop waterproofing solutions across Melbourne, and have licensed contractors with years of in-field experience. Whether it’s for […]
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Preston homes we work on
Most Preston waterproofing work falls into one of two jobs, and knowing which one you have changes the quote.
Retrofit on older stock. Terraces, weatherboard homes and bungalows in Preston were mostly built before waterproofing was a regulated trade. When we open up a bathroom in one of these, we are usually dealing with movement in a timber substrate, old screed that has lost its fall, and a shower that has been leaking quietly into a wall frame for years. These jobs need a system with enough flexibility to handle a floor that moves, and they need honest preparation, which is the part that gets skipped when someone quotes a quick fix.
New builds and recent developments. The apartments and townhouses going up around Preston are a different job. The substrates are concrete, the falls are usually designed in, and the work is about getting the membrane and the screed right the first time so the balcony or bathroom is not a defect claim in two years. Builders and property managers we work with care most about staging and about the certificate at the end.
If your Preston property sits somewhere between the two (an older home with a modern extension on the back), expect us to treat them as two jobs in one quote, because the substrates behave differently.
Which membrane suits your Preston job
Two questions decide most of it: does the substrate move, and what is going on top?
Sheet membrane is a pre-formed waterproof sheet applied to the surface to create a continuous barrier. Liquid membrane is applied wet and cures in place, which lets it follow awkward shapes and detail around penetrations. We also work with polyurethane and cementitious systems, and we screed for drainage where the fall is wrong.
We do not pick the system based on what is quickest to install. We pick it based on the substrate, the exposure and what the manufacturer’s specification allows, because applying a product outside its intended use is how a membrane fails early. There is more detail on each system on its own service page.
Secure Your Space with Expert Waterproofing
Contact us now for a free waterproofing quote and expert advice. Call us at 0433 201 995
Our Proven Waterproofing Process
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Step 1Free Inspection & ConsultationWe start with a thorough property check to identify leaks, cracks, and problem areas.
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Step 2Custom WaterproofingOur experts create a tailored solution with transparent pricing and the best methods.
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Step 3Professional ApplicationWe use high-quality materials and proven techniques to ensure long-lasting protection.
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Step 4Final Check & GuaranteeA detailed inspection is done, and we provide maintenance tips plus a service guarantee.
What waterproofing costs in Preston
We do not publish a fixed price per square metre, and we would be guessing if we did. A small internal bathroom and a full balcony rebuild are not comparable jobs.
What we do instead: you send through the details, we come out for a free, no-obligation on-site walkthrough, and you get a clear quote and a timeline before anything starts. No hidden costs. Pricing is matched to what the job actually needs, whether that is a single wet area or a commercial building.
The honest version of a Preston cost answer is that preparation drives it more than area does. A bathroom that just needs a correctly specified system costs one thing; a bathroom where the screed has to come up and the fall has to be rebuilt costs another. The walkthrough is how we tell you which one you have before you commit.
Victorian compliance and your certificate
Waterproofing in Victoria is covered by Australian standards, and we comply with all of them, along with the manufacturer’s recommendations for each product we apply. That second part matters more than people expect. A compliant product applied outside its specification is not compliant work.
Where a job requires a waterproofing certificate, we provide it. If you are a Preston homeowner renovating, or a builder closing out a stage, the certificate is the document that shows the wet area was done properly.
How long it lasts, and when you can use it
Two questions we get constantly. How long waterproofing lasts depends on the system, the preparation and the exposure. A correctly prepared internal wet area should not be something you think about again for a long time, while an exposed balcony is working harder every summer. When you can walk on the membrane depends on the product’s cure time, and we will tell you the actual figure for the system on your job rather than a number that sounds convenient.
Our process
- Send us the details of your Preston job by phone or email.
- We arrange a free on-site walkthrough and assess what the work actually needs.
- You get a clear quote and a timeline.
- Our licensed and insured team carries out the work with premium-grade materials, keeping the site clean and disruption low.
- We finish the job, often earlier than predicted, with guaranteed quality.
About 3K Waterproofing
3K Waterproofing is a family-owned business founded in 2023 by brothers Michael (Micky) and Joseph (Joey). Micky is behind every call, email, plan and quote; Joey runs the on-site management and the problem-solving. Between them they have made watertight work for over 150 clients across Melbourne and Greater Melbourne.
For our full credentials (licensing, insurance, compliance and guarantees), see our service pages and the About page.
Other areas we serve
We work across Melbourne and Greater Melbourne. If your job sits outside Preston, these pages cover our work in other suburbs:
Get a quote for your Preston job
Whether it is a terrace bathroom that has been quietly leaking or a new townhouse balcony, send us what you know. Call 0433 201 995 or email info@3kwaterproofing.com.au, Monday to Friday, 7:00am–7:00pm.
See Our Work in Action
Why Choose 3K Waterproofing in Preston?
Run by brothers Micky and Joey, 3K Waterproofing combines decades of construction knowledge with modern waterproofing techniques. Since 2023, we’ve built our reputation on:
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ExperienceSpecialists in both residential and commercial waterproofing
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Quality assurance
Using premium materials for every project
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Professional service
Clean, productive work with minimal disruption
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Full insurance coverage
Complete peace of mind for property owners
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Transparent pricing
Clear quotes with no hidden costs
There is no honest flat rate. On Preston’s older stock the preparation drives the price far more than the area does, so a square-metre figure quoted before anyone has seen the floor is a guess. The walkthrough gives you a real number.
The grades describe how much water exposure a system is built to handle. A fully enclosed shower and a laundry splash zone are not the same duty. We specify to the exposure of your particular wet area rather than applying one grade everywhere.
Yes. The membrane goes on before the tiles, and once tiles are down it cannot be inspected or corrected without removing them. This is the single most common reason a bathroom has to be redone.
It depends on the system, the preparation and the exposure. A correctly prepared internal wet area should last a very long time. An exposed balcony works harder every summer and will not match it.
In most cases yes, provided the system is specified for tiling over and has cured properly. We confirm it for your product before the tiler starts.
Areas
From the heart of the CBD to the Mornington Peninsula, 3K Waterproofing is a Melbourne based team ready to assist with residential, commercial, and industrial projects across the city.
- Abbotsford
- Balwyn
- Berwick
- Brighton
- Brunswick
- Bulleen
- Bundoora
- Camberwell
- Caroline Springs
- Clayton
- Clyde North
- Coburg
- Doncaster
- Essendon
- Frankston
- Geelong
- Glen Iris
- Glen Waverley
- Greenvale
- Hadfield
- Hampton
- Hawthorn
- Ivanhoe
- Keilor
- Kew
- Malvern
- Mickleham
- Mornington Peninsula
- Northcote
- Pascoe Vale
- Point Cook
- Prahran
- Preston
- Reservoir
- Richmond
- Rowville
- South Yarra
- St Kilda
- Sunbury
- Sunshine
- Taylors Lakes
- Thomastown
- Toorak
- Werribee
- Wheelers Hill
- Wollert
