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Waterproofing Solutions in Perth

Wolfin & Cosmofin Experts

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Now Servicing WA with Local Stock & Certified Installers

Projex Group has been Australia’s trusted waterproofing expert for over 35 years, supplying premium PVC membranes, Wolfin and Cosmofin, to commercial, residential, and infrastructure projects nationwide.

Now, we are expanding our presence in Western Australia with a Wolfin-accredited contractor in Perth, a local warehouse for easy stock access, and full technical support for architects, engineers, contractors and other industry professionals. We work closely with design professionals to develop waterproofing systems, offering technical guidance, compliance reviews, and custom waterproofing drawings in accordance to the manufacturer specifications.

Whether you need waterproofing materials, certified installation, or expert technical support, Projex Group is here to assist.

Looking for a trusted waterproofing partner in WA? Contact us today!

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Upcoming Events in WA

Register your interest to attend our next Cosmofin and Wolfin live demonstration and training in Perth, we’ll be in touch once dates are confirmed.

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Why Choose Projex Group for Waterproofing in WA?

Premium Waterproofing Systems

We supply Wolfin & Cosmofin membranes, known for their durability and long-term performance.

Local Warehouse & Stock Availability

Our Western Australia warehouse ensures faster access to materials for your projects.

Certified Wolfin Installer in Perth

We now have a Wolfin-accredited contractor in WA, ensuring expert application.

Comprehensive Technical Support

We assist WA architects, engineers, and waterproofing consultants in designing waterproofing systems, providing technical drawings, and ensuring compliance with Australian standards.

Cosmofin Available for WA Contractors

Any skilled waterproofing contractor in WA can purchase and apply Cosmofin, with full technical support from Projex Group.

Proven Project Success in WA and Trusted Nationwide

Projex Group has a 35-year reputation for delivering superior waterproofing solutions across Australia and have successfully completed waterproofing projects in Western Australia using both Wolfin and Cosmofin membranes. (See our WA case studies for more details.)

Partner with Projex Group in Western Australia

Projex Group partners with architects, engineers, builders, and waterproofing contractors across WA to deliver proven waterproofing systems that meet Australian standards. Whether you need assistance with design specifications, compliance, or technical support, our expert team is here to help you achieve the best result for your project.

We’re also expanding our network of certified Wolfin and Cosmofin installers in Western Australia and are actively seeking new business partners. If you’re a contractor, engineer, or builder looking to collaborate with a trusted, industry-leading supplier backed by decades of experience and technical expertise, we’d love to hear from you.

Want to work with us? Contact us today

Servicing Perth, Fremantle, Bunbury, Geraldton, and Greater WA.

Why Wolfin & Cosmofin Are Ideal for Waterproofing in WA?

Western Australia’s diverse climate conditions, from heavy winter rains in Perth to the extreme heat of regional WA, require high-performance waterproofing solutions that can withstand:

Extreme UV & Temperature Fluctuations

Wolfin and Cosmofin are designed to resist WA’s high UV exposure and temperature swings, ensuring long-term durability.

Heavy Rain & Coastal Conditions

The fully welded seamless membranes provide complete waterproofing in high-rainfall and salt-exposed environments (with the stainless steel profile option).

Chemical & Root Resistance

Suitable for planter boxes, podiums, and green roofs, common in Perth’s modern commercial developments.

Long-Term Reliability with a 15-Year Warranty

Wolfin is the only waterproofing membrane in Australia with a 15-year material and workmanship warranty, offering peace of mind.

Whether for high-rise developments, infrastructure projects, or remedial waterproofing, Wolfin & Cosmofin provide unmatched protection for WA construction.

Our Waterproofing Solutions for Western Australia

Wolfin & Cosmofin PVC Waterproofing Membranes

  • Wolfin Membrane – A premium, fully welded Polyester PVC waterproofing system, ideal for complex applications and when waterproofing is of the utmost importance.
  • Cosmofin Membrane – A cost-effective, durable PVC waterproofing membrane that any skilled WA contractor can purchase and apply, with full technical support from Projex Group.
Waterproofing Solutions

Link-Seal Mechanical Seals (Sealing Pipe Penetrations)

The leading solution for sealing pipe penetrations in concrete slabs, walls, and tanks, ensuring a long-lasting seal against water, oil, gas, etc.

Link Seal Solutions

Sub-Ballast Mat or Under-Ballast Mat (SBM or UBM) for Rail

Vibration-dampening and protection system for rail infrastructure in Western Australia.

Railway Solutions

Waterproofing Projects in Perth

While we are rapidly expanding in WA, Projex Group has a long-standing reputation for delivering premium waterproofing solutions across Australia. See some of the projects where Wolfin and Cosmofin have been used in Western Australia:

Wolfin Quality Control and Inspection

Every Wolfin installation in Australia is inspected and officially signed off by Projex Group to ensure it meets the manufacturer’s strict standards for performance and durability. This commitment guarantees that each project benefits from the same level of quality and compliance, no matter the location.

In this project, our certified Wolfin inspector flew to Perth to conduct the final inspection and approval, ensuring the system was installed to the highest standards before handover. This level of involvement is part of what makes Wolfin the most trusted PVC waterproofing membrane in Australia.

Speak to WA’s Waterproofing Experts

Need high-quality waterproofing materials, technical guidance, or certified contractors in WA?

Contact Projex Group today for:

  • Fast local stock availability from our WA warehouse
  • Wolfin-certified contractors for expert installation
  • Technical support for architects, engineers & contractors
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