3. Durability and Longevity

The primary materials used in KOROK® panels—steel and concrete—are both known for their durability and long service life.

Concrete structures can last for many decades and often well over a century. Steel maintains its structural properties over time and can be recycled at the end of a building’s life. Because KOROK® panels are made from these long‑lasting materials, they contribute to buildings that require fewer replacements and less material use over time.

4. Deconstruction and Reuse

KOROK® panels can also be deconstructed and reconstructed rather than simply demolished. This allows materials to be reused in future building projects.

Designing buildings with components that can be reused helps reduce construction waste and extends the lifecycle of building materials.

5. Performance as a Sustainability Factor

Sustainability is not only about reducing carbon emissions—it is also about ensuring products perform reliably throughout the life of a building.

KOROK® panels are widely used because they provide exceptional fire and acoustic performance. Products that protect buildings from fire and control noise for decades without needing replacement contribute strongly to long‑term sustainable construction.

Want to know more about how these changes impact your project?

Fire & Acoustic Separation for Apartments & Multi Unit Projects

Multi‑unit residential projects deserve solutions that deliver absolute clarity, certainty, and performance. That’s exactly what the KOROK® Intertenancy Wall System provides. Proudly NZ‑made and BRANZ appraised, it’s engineered to strip away complexity, accelerate construction programmes, and give your team confidence from the very first design decision through to final completion. With clean, predictable onsite installation and consistently reliable fire and acoustic performance, the system transforms intertenancy from a pain point into a proven advantage.

Watch KOROK® Intertenancy System in Action

Planning a Multi‑Unit Project?

KOROK® Intertenancy Wall System Projects

Some of our KOROK team members, including our Systems & Sustainability lead, recently visited NZ Steel’s Glenbrook site for a look behind the scenes at their game-changing Electric Arc Furnace (EAF) project.

This innovative project will replace two coal-fuelled rotary kilns at the Glenbrook steel mill, reducing NZ Steel’s carbon emissions by over 45%. The EAF will use renewable electricity and recycled scrap steel instead of coal, cutting NZ Steel’s carbon emissions by around 1 million tonnes a year  – that’s about 1% of New Zealand’s total emissions!

The project, supported by the New Zealand Government through the GIDI Fund, is expected to be operational by mid-to-late 2026, marking a significant milestone in New Zealand’s decarbonisation journey.

It was great to see this innovation up close and discuss how these advancements align with our own sustainability goals at KOROK.

A focused manual outlining approved penetration seals using Promat products with KOROK® walls, supported by BRANZ Test Report FR10185-001-02.
What you’ll find inside:

• BRANZ-approved solutions for service penetrations

• Promat’s expertise in structural protection, compartmentation, fire stopping, and ductwork systems

• Robust, tested solutions for challenging project requirements

Download the PROMASEAL® Service Penetrations Manual with Promat

This technical guide provides a comprehensive overview of Hilti’s passive fire protection systems tested and assessed for use with KOROK® intertenancy and fire-rated wall systems. Developed to support designers, engineers and contractors, this document consolidates key firestop solutions that tested in accordance with AS 1530.4 and assessed in accordance with AS 4072.1 and are compliant under the NZBC Clause C for service penetrations in KOROK® walls.

Hilti’s firestop products are engineered for performance, tested for compliance, and supported by international approvals and local assessments. Each system outlined in this guide has been selected based on its compatibility with KOROK® wall (51mm and 78mm) configurations and its ability to maintain fire resistance ratings across a wide range of service types, including:

• Power and data cables
• PVC, PEX, and metal pipes
• Cable bundles and conduits
• HVAC services
• Structural steel and linear gaps

This guide includes:

• A system index for quick navigation
• Detailed tables of tested configurations
• Installation notes and performance ratings
• Reference to relevant test reports and approvals

Advanced Noise Control Solutions for Targeted Acoustic Performance

KOROK Building Systems introduces new range of acoustic solutions to tackle specific sound challenges in modern construction. These innovations build on KOROK’s already extensive portfolio of proven acoustic systems.

Key Applications:

• Cinemas: Immersive audio experiences without disruptive sound bleed.
• Terrace Housing: Quieter, more comfortable living environments.
• Commercial Spaces: Improved sound management for offices, hospitality, and more.

Book a Free Presentation and see firsthand how KOROK’s Building Systems can benefit your project.

KOROK Sets a New Benchmark in Seismic Performance

KOROK® has raised the standard for seismic resilience, proving its durability in the toughest conditions. Recent seismic testing conducted at BRANZ in 2024 confirmed that KOROK panels can withstand high levels of drift, ensuring minimal damage, reduced repair costs, and faster recovery following earthquakes.

These rigorous tests, performed in accordance with FEMA 461 and NZS 1170.5:2004 standards, evaluated KOROK panels under both in-plane and out-of-plane seismic conditions. No other system in New Zealand has undergone such extensive testing across multiple wall configurations.

With their exceptional seismic, fire, and acoustic performance, KOROK panels are the ideal choice for high-importance structures, including hospitals, emergency response centres, and essential utilities. This milestone reaffirms KOROK’s commitment to delivering market-leading solutions that enhance building resilience and safety.

For more details, visit our Seismic Resource page and discover why KOROK is the trusted name in performance-driven wall systems.