Melbourne’s accredited membrane waterproofing specialists. Heat-welded PVC systems for flat roofs, basements, bathrooms, green roofs, balconies, planter boxes and more — installed right, first time.
Our installations = Immaculate | Our testing = Rigorous | Your peace of mind = Priceless
Stronghold Waterproofing is a specialist membrane waterproofing contractor servicing greater Melbourne and Victoria. We hold preferred and accredited installer status with Australia’s leading membrane brands — delivering heat-welded PVC and TPO/FPO systems across every application, from flat roof waterproofing and basement tanking to bathroom waterproofing, green roofs, planter boxes and retaining walls.
We work across every application — from flat roof waterproofing and basement tanking to bathroom waterproofing, green roofs, planter boxes and retaining walls.
Accredited & Preferred Installer Partner
Heat-welded PVC and TPO/FPO single-ply membrane systems for low-slope and flat roofs. New build and remedial — specified to each substrate and exposure condition.
Positive and negative-side tanking for basement slabs, walls, lift pits and sub-grade structures. Pre-applied and post-applied systems to prevent hydrostatic pressure ingress.
AS 3740-compliant wet area waterproofing for bathrooms, ensuites, laundries and shower recesses. Residential and multi-residential new builds and renovations.
FLL-certified, root-resistant membrane systems for living and green roofs. PVC and FPO membranes with drainage cells and filter fabric — fully specified for each application.
External balcony and podium deck waterproofing with trafficable membrane systems. Welded upstands, penetrations and drainage outlets — built for foot traffic and weather exposure.
FLL root-resistant membrane lining for planter boxes, green walls and retaining structures. Chemically resistant to fertilisers; impervious to standing water.
Heat-welded PVC membrane lining of box gutters, parapet flashings and internal drainage channels. Purpose-fabricated corner details and sump outlets — zero-leak joints.
Expert diagnosis and re-waterproofing of failed systems. Electric Field Vector Mapping (EFVM®) pinpoints membrane breaches without flooding — no destructive investigation required.
APP and SBS modified bitumen sheet membranes, heat-fused to the substrate using a gas torch. Available as a 3mm base sheet with a 4.5mm mineral cap sheet system, reinforced with non-woven polyester. Suited to flat roofs, podium slabs, basement walls, planter boxes and below-ground applications where a proven, durable bituminous system is required.
Most waterproofing failures aren’t a materials problem — they’re a workmanship and specification problem. We close that gap: accredited installers, rigorous testing, and zero-compromise detailing on every project, from bathroom recesses to large commercial rooftops.
Heat-welded seams create monolithic, watertight joints that can’t delaminate. Every upstand, penetration and corner — from bathroom recesses to commercial rooftops — is fabricated and welded on site.
EFVM® (Electric Field Vector Mapping) integrity testing on every critical installation. Locates membrane breaches without flooding or destructive investigation.
Preferred installer status across 10 brands. We work directly with brand technical representatives on complex projects — giving your project the full backing of the manufacturer.
We bring 15+ years of hands-on membrane installation experience to every project — delivering watertight results backed by our preferred installer relationships with Australia’s leading brands.
We work with the world’s leading waterproofing membrane manufacturers. Our partnerships give you access to the best products for every application — with direct technical support from brand representatives on complex and high-risk projects.
Stronghold Waterproofing services greater Melbourne and Victoria, delivering membrane waterproofing across residential, commercial and remedial markets. We install systems from Wolfin, Fatra, Sika Sarnafil, Soprema, Ardex WeldTec™, Tremco, GCP and Drizoro across flat roofs, basements, bathrooms, green roofs, planter boxes, balconies and more.
We work with architects, builders, project managers, body corporates and homeowners — and provide direct access to brand technical representatives for complex scopes.
We service all suburbs across greater Melbourne — inner city, eastern, western, northern and southern suburbs, the Mornington Peninsula, outer growth corridors and regional Victoria.
Common project locations: Melbourne CBD, South Yarra, St Kilda, Richmond, Fitzroy, Carlton, Brunswick, Essendon, Doncaster, Box Hill, Glen Waverley, Dandenong, Frankston, Geelong and coastal Victoria. We serve commercial, education, health, aged care, government and high-end residential sectors.
Speak to Melbourne’s membrane waterproofing specialists — straight answers and honest specification advice, backed by 15+ years of installation experience.
Whether you’re a builder, architect, body corporate or homeowner — straight answers and honest specification advice, no obligation.
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Common questions about membrane waterproofing, our services and how we work across greater Melbourne.
Stronghold Waterproofing is a membrane waterproofing contractor based in Melbourne, Victoria, Australia. We are preferred partner installers for 10 leading waterproofing membrane brands and have been delivering commercial, residential and remedial waterproofing projects across greater Melbourne for over 15 years. We are fully licensed and insured.
We install heat-welded PVC, TPO and FPO waterproofing membrane systems for flat roofs, basements, bathrooms, green roofs, balconies, podium decks, planter boxes, retaining walls and box gutters. We also carry out EFVM (Electric Field Vector Mapping) integrity testing and remedial re-waterproofing of failed systems across Melbourne and Victoria.
Stronghold Waterproofing installs membranes from: Wolfin (PVC Waterproofing Membrane), Fatra Australia (PVC membrane systems), Sika Sarnafil (single-ply PVC/FPO), Soprema Flagon (PVC/TPO), Vinitex by Soprema (PVC-P), Ardex WeldTec™ (AS 4654 & AS 4858), Cosmofin (PVC/FPO by Wolfin), Tremco, GCP Applied Technologies and Drizoro.
Greater Melbourne metropolitan area and regional Victoria, including: Melbourne CBD, South Yarra, St Kilda, Richmond, Fitzroy, Carlton, Brunswick, Essendon, Doncaster, Box Hill, Glen Waverley, Dandenong, Frankston, Geelong, Ballarat corridor, Mornington Peninsula and coastal Victoria. We serve commercial, education, health, aged care, government and high-end residential sectors.
Had Stronghold Waterproofing do our bathroom and balcony waterproofing and they were great. Golam was easy to deal with, gave us a clear price upfront and the work was done properly with no shortcuts. The balcony membrane and bathroom waterproofing were both finished neatly and the area was left clean. Had issues with leaks from a previous tradie so wanted it done right this time. Really happy we went with Stronghold. Would highly recommend them to anyone in Melbourne needing a reliable waterproofing contractor
Golam is a high skilled professional in terms of waterproofing installation & also project management. He assisted in providing clear updates on progress, and assisted in solving issues before they impacted works. Highly recommend using Stronghold waterproofing for any scale project.
I hired Stronghold Waterproofing to waterproof my balconies and rooftop, and I couldn't be happier with the results. Their team was professional, efficient, and thorough in explaining the process. They completed the job on time, leaving everything clean and protected. Since the work was done, there have been no leaks or issues, even during heavy rain. Highly recommend Stronghold Waterproofing for anyone needing waterproofing services!
I am very thankful to Stronghold team for their exceptional work waterproofing our balcony at Brighton. Their service was outstanding, providing high-quality work at an affordable rate. What truly impressed me was their consistent communication throughout the process, ensuring I was informed every step of the way. I highly recommend Stronghold Waterproofing.
Stronghold waterproofing was hired to waterproof two bathrooms at my place. They were really easy to work with and I’m very happy with their service and quality of work. I recommend Stronghold to anyone looking for a waterproofer in Melbourne.
I am thrilled with the transformation Stronghold Waterproofing achieved with my leaking shower. They expertly removed the old grout and replaced it with epoxy grout, along with installing new silicone. The result is astounding - my shower almost looks brand new! Their professionalism and quality of work exceeded my expectations. I highly recommend them for any waterproofing needs.
We had a great experience with Stronghold Waterproofing! They showed up on time and communicated everything we needed to know while we managed our own ensuite and laundry renovation. The one stipulation for Stronghold was that we had heard my tiler was very fussy with waterproofing, so I had to ensure that I used a waterproofing company who came well recommended by a tradie friend. The tiler was really happy with the work and now we have a beautiful looking and waterproofed ensuite and laundry. Thanks for Stronghold for your professionalism and guidance.
We did our bathroom renovations and did a lot of research for waterproofing as we had a leak before and we were recommended Stronghold Waterproofing by friends. They did a fantastic job with the waterproofing and tiling. The boys were very tidy and professional and excellent communication. Very happy with the outcome!
The top and most affordable waterproofing experts in the area, known for their extensive experience and use of high-quality materials.
The best in the business stronghold waterproofing! Great people, high quality work. As good as it gets. Would definitely recommend
Very knowledgeable on the standards and products. Waterproofed my bathroom in time and with in my budget. Would definitely recommend!!!
Excellent service, reliable and trustworthy Furthermore, strong focus on customer service as well as completing job effectively and efficiently Well spoken with outstanding attitude
Great work by Stronghold fantastic service.