The Danrae difference means we have the best experience, the best expertise and unique end-to-end capability. We have an exceptional team on hand for every job. We can project manage from estimation to end, and we have extensive experience on every sized project. Please take a look at our inventory of techniques and services here.

From strata to shopping centres, highrise and hospitals, Danrae will deliver exceptional waterproofing… with every project guaranteed to premium standards.

Full techniques and full servicing

Our waterproofers are trained and certified in every waterproofing technique – including liquid, PVC, TPO, peel and stick and injection membranes – so we know every option… for optimum solutions. We provide comprehensive services ranging from leak detection to corporate branding for rooftops. And we offer the all-round service that comes with decades of proven process and project completion.

Danrae Group believes in prevention post-project, so we provide ongoing maintenance plans for every project. Education is important to us too, so we also run free waterproofing workshops for strata managers, engineers and consultants – to help you look after your property moving forward.

Waterproofing Technique

Our inventory of techniques and services includes:

  • High pressure crack injection
  • Concrete cancer repairs
  • Salting/efflorescence repairs
  • Planter box installation and repairs
  • Liquid damp coursing
  • Repairs for basements, lift pits and retaining walls
  • Shower repairs
  • Installation and repair of plant room flooring
  • Rooftop waterproofing audits
  • Membrane installation and sealing of balconies
  • Waterproofing installation and upgrades to roofing
  • Facade coating and repairs
  • Concrete Spalling
  • Liquid & Sheet Membrane
  • Waterproofing expansion joints
Waterproofing - Extensive Hands on

Extensive expertise - at hand

Danrae began as a family business in the 1990s. And over the years we’ve built a diverse and dedicated team that knows the industry inside and out. At our heart are our skilled in-house waterproofers, many also trained in extra trades.

We also have a team of electricians, plumbers, builders, carpenters and tilers at hand. So we take full control of every stage of the project. And that means no cost or time blow-outs, and a long-lasting quality solution every time.

Comprehensively Tested

Comprehensively tested and fully compliant

Danrae Group is fully accredited and we conduct work to exacting standards.

Part of our project management includes comprehensive testing – with options including traditional water testing, Electric Field Vector Mapping (EFVM) and InfraRed Detection, on site or via drones. We also employ external third party testing for full quality assurance.

Our projects comply with government-recommended statutory warranties – and we can offer extended 30 year warranties dependent on selected products.

We provide a full waterproofing guarantee because we are the experts in waterproofing, and we have the skills and on-ground experience to deliver cost-effective, fast-response and permanent waterproofing solutions.


Investing in quality roofing membranes is an intelligent choice for any discerning building owner. These specialised barriers offer a range of advantages that ultimately enhance your property’s longevity and overall value.

  • Extends roof lifespan — Waterproof roofing membranes create a robust shield against water damage. As a result, they protect the roof’s structural elements from rot, decay and other deterioration caused by moisture. This significantly extends the lifespan of your roof and saves you thousands of dollars in premature repairs or replacements.
  • Improves energy efficiency — A waterproofed roof acts as an additional layer of insulation, slowing down the transfer of heat into and out of your building. This helps maintain a more stable internal temperature, reducing the reliance on heating and cooling systems and can assist in lowering your energy bills.
  • Prevents structural damage — Water infiltration doesn’t just affect the roofing materials. Over time, it can seep through and weaken the underlying structure of your building. Roofing membranes provide a critical barrier that protects the integrity of walls, ceilings and support systems, saving you from costly repairs and preserving the overall soundness of your building.
  • Reduces mould growth — Excess moisture trapped within a roof structure creates the perfect breeding ground for mould and mildew. Waterproofing membranes prevent water infiltration and effectively eliminate the dampness that fosters mould growth. This not only protects your building but also promotes healthier indoor air quality.



The cost of waterproofing a roof hinges on factors like the roof’s size, the chosen membrane and the installation complexity. Generally, you can expect to pay several thousand dollars for regular-sized properties.

While it may seem like an upfront expense, remember that high-quality waterproofing membranes, installed by experts, extend your roof’s lifespan and save you from costly repairs in the future. Consider it an investment in your property’s protection.

To discuss a personalised quote or ask us about our lifetime guarantee on all exposed roof waterproofing membranes, contact Danrae Group today.

Go straight to the experts...

… that’s us! We live and breathe waterproofing and remediation. Whatever your query, we can help. Contact us to speak to one of our expert team and get your project on the right track.


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