Knauf
We change the way the world builds.
Knauf PERMAROCK® is a global leader in cement-based building products. Big River is an authorised distributor of the PERMAROCK® range across our branch network.
Explore the Range

PERMAROCK® Cement Board Outdoor
The ideal substrate for steel-framed commercial facades, timber-framed residential claddings, as well as soffits with renders & tiles finishes.
About Knauf
Founded in 2002 as a joint venture between Knauf and USG, and becoming fully part of Knauf in 2016, Knauf PERMAROCK® has grown into a trusted global brand in cement-based drylining and construction systems.
Today, PERMAROCK® is the first choice for many construction professionals, offering high-performance solutions that help deliver durable, efficient and innovative buildings. Built on advanced cement board technology, the brand has expanded the possibilities of dry wall construction across a wide range of applications and environments.
Knauf PERMAROCK® is responsible for the production and worldwide distribution of integrated system solutions designed to meet the demands of modern construction. Its portfolio includes Knauf Exterior Wall and Knauf Wetroom Solutions.
With PERMAROCK® Technology at the core, these systems offer clear advantages across residential, commercial and institutional buildings. They support faster construction, dependable performance and greater design flexibility, helping architects, specifiers and contractors respond to increasingly complex project requirements.
By combining technical expertise with practical system innovation, Knauf PERMAROCK® continues to inspire creative, reliable solutions for the built environment and the challenges of the future.
Engineered for Performance
Pioneering Spirit
We enable our partners to realize better buildings through innovative and sustainable peace-of-mind-solutions.
Building the Future Together
We continuously make a difference in the world of construction by offering flexible, innovative and sustainable systems. We see our customers as partners, working hand in hand with them. Offering the perfect solution that is fitting their needs to realize creative, sustainable projects.
Driven by Our Value
We are setting the benchmark in sustainable products, outstanding performance and trusting cooperation. By acting as one team, united in the commitment to enable our clients to capture the best value.
Recent Projects

Materials palette channels Mediterranean design
Materials palette channels Mediterranean design into everyday living at boutique Gold Coast community. Big River Group supplied key...

The Rose Fitzroy
With roots deeply entrenched in the local community, iconic pub The Rose, in Fitzroy, Victoria recently underwent a...

Taronga Zoo Installation
Big River’s timber helps build an oasis in the heart of Sydney The design brief for this ‘forever...
Knauf Documentation
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