Carbon reduction starts with using less

Carbon reduction starts with using less

As the construction industry works to reduce embodied carbon, much of the conversation focuses on selecting lower-carbon materials. While material choice certainly matters, one of the biggest opportunities often comes much earlier in the process: designing buildings that simply require less material.

Recent industry discussion, including BRANZ’s work on Whole of Product Thinking, reinforces this shift in thinking. Embodied carbon isn’t just determined by what products are made from—it’s also influenced by how much material is needed to deliver the required performance. At KOROK, reducing material demand begins with smarter system design.

Simpler systems, lower carbon

Traditional wall assemblies are often built from multiple layers and components, requiring additional framing, linings, fixings and extensive on-site work to achieve fire and acoustic performance. KOROK simplifies this process by integrating fire and acoustic performance into a single tested wall system. With fewer components required, projects consume less material from the outset.
This not only simplifies construction but also reduces the embodied carbon associated with manufacturing, transporting and installing those materials.
Sometimes the most effective way to reduce carbon is simply to build with less.

Manufactured to fit

Material efficiency doesn’t stop with system design.
Every KOROK panel is manufactured to the dimensions required for each project. Producing panels to the correct size minimises off-cuts, reduces over-ordering and significantly decreases on-site waste.
Unlike traditional construction, where materials are frequently cut and discarded during installation, made-to-measure manufacturing ensures that only the material required for the project is produced and delivered.
The result is a more efficient construction process with less waste sent to landfill and fewer resources consumed overall.

Efficiency beyond installation

Reducing material demand also improves efficiency throughout the construction process.
Fewer components mean fewer deliveries, less handling on site and faster installation, reducing the resources needed to complete each project. By simplifying the wall assembly, contractors spend less time managing materials and more time delivering completed spaces.
These efficiencies may not always be visible, but collectively they contribute to lowering the environmental footprint of a project.

Designed for long-term performance

Lower embodied carbon isn’t just about the day a building is completed.
KOROK wall systems are designed for durability and long service life, helping reduce the need for replacement over time. Where appropriate, panels can also be removed and reused in future projects, extending their useful life and reducing demand for new materials.
At the end of their service life, the steel and concrete components can be recovered and recycled, supporting a more circular approach to construction.

Smarter design delivers lower embodied carbon

Reducing embodied carbon is rarely achieved through a single decision. It comes from making better choices throughout the design and construction process.
For KOROK, that means:
  • Simplified wall systems that use fewer materials.
  • Made-to-measure manufacturing that minimises waste.
  • Reduced on-site cutting, handling and over-ordering.
  • Lower embodied carbon through reduced material demand.
  • Durable systems designed for long-term performance and recyclability.
As the industry continues to embrace whole-of-product thinking, one principle remains clear: the most effective carbon reduction strategies often begin by asking a simple question—how can we achieve the same performance using less? Designing smarter, manufacturing more accurately and reducing unnecessary material use creates buildings that are more efficient, more sustainable and better prepared for the future. To explore the broader industry perspective, read the BRANZ article: “Carbon reduction begins with whole of product thinking.”

Recent Articles

Read more
Seismic Resource

Beyond Compliance: Why Seismic Resilience Remains Critical

Beyond Compliance: Why Seismic Resilience Remains Critical

Seismic strengthening rules may be changing – but earthquake risk isn’t going away.

A recent BRANZ article highlights why building owners are still investing in seismic resilience: safety, insurability, asset value, and business continuity all matter beyond minimum compliance.

This aligns closely with why KOROK® has invested in seismic testing beyond code – ensuring non‑structural wall systems perform where it counts, even at high drift levels.

Read the full BRANZ article here 👉 Seismic strengthening is changing but not going away

Recent Articles

Read more
Acoustic Performance in Medium Density Housing Why Code Minimum Is No Longer Enough

Acoustic Performance in Medium Density Housing: Why Code Minimum Is No Longer Enough

Acoustic Performance in Medium‑Density Housing: Why Code‑Minimum Is No Longer Enough

As medium‑density housing continues to grow across New Zealand, noise transmission between dwellings is consistently identified as one of the biggest impacts on resident wellbeing and quality of life.

While the Building Code sets minimum acoustic standards, real‑world experience shows that Code‑compliant buildings can still fall short of acoustic comfort.

At KOROK, we believe acoustic performance should be designed for how buildings are actually lived in — not just how they are tested. Our building systems can achieve STC ratings of 65 and above, supporting Code‑plus acoustic outcomes that deliver greater privacy, reduced noise complaints, and better living experiences in medium‑density developments.

Early acoustic design, robust systems, and predictable performance make the difference.

👉 Read BRANZ original article here: Soundproofing in medium-density housing

Acoustic Performance in Medium Density Housing Why Code Minimum Is No Longer Enough

Recent Articles

Read more
Why Early Design Decisions Matter More Than Ever

Why Early Design Decisions Matter More Than Ever

Why Early Design Decisions Matter More Than Ever

Designers today have better tools than ever to understand how their choices affect a home’s energy use and carbon footprint. With embodied carbon and operational energy now able to be assessed early in design, materials are no longer just a specification detail – they are a performance decision.

Material choices made early in the design process have a significant influence on a home’s overall performance. Choosing solutions that are efficient, well‑designed, and suited to modern construction workflows can deliver benefits across comfort, cost, and emissions over the life of a building.

At KOROK, we see this as a positive step forward for the industry. As performance modelling becomes standard practice, smarter wall systems help designers and builders turn sustainability targets into practical, buildable outcomes – right from concept stage.

Further reading:
This article was inspired by recent industry discussion on accessible carbon and energy modelling. You can read the original article from BRANZ and the New Zealand Green Building Council here: Carbon and energy calculation that’s accessible for designers – BRANZ

Why Early Design Decisions Matter More Than Ever

Recent Articles

Read more
Sustainability Update - KOROK Panels Are About to Get a Whole Lot Lower‑Carbon

Sustainability Update – KOROK Panels Are About to Get a Whole Lot Lower‑Carbon

Sustainability Update – KOROK Panels Are About to Get a Whole Lot Lower‑Carbon

1. NZ Steel’s Electric Furnace Transition

NZ Steel is commissioning a new Electric Arc Furnace (EAF) to replace the current coal‑based steelmaking process. This technology significantly reduces emissions because it uses electricity rather than coal as the primary energy source. Commissioning is expected to be complete by the end of 2026.

The change is expected to reduce the carbon footprint of NZ‑made steel by around 50%. Since the steel component represents the majority of the embodied carbon in KOROK® panels, this will dramatically reduce the carbon footprint of our product without any change to product performance or specification.

2. Steel as a Circular Material

Steel is one of the most recyclable materials used in construction. It can be recycled indefinitely without loss of quality or structural performance.

This means the steel used in KOROK® panels can be recovered and reused repeatedly, supporting circular economy principles and reducing demand for new raw materials.

Sustainability Update - KOROK Panels Are About to Get a Whole Lot Lower‑Carbon

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?

Recent Articles

Read more
KOROK® Intertenancy Wall System

KOROK Intertenancy Wall System – Fire & Acoustic Separation for Apartments & Multi Unit Projects

Slide 1

KOROK® Intertenancy Wall System

This video redefines how intertenancy can be approached in multi-unit residential construction — with clarity, certainty, and performance built in from day one.

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.

Our new video showcases just how much faster, easier, and more predictable intertenancy can be across apartments, terraced housing, hotels, retirement villages, and mixed‑use developments.

Key Benefits

  • Performance

  • Simplicity

  • Speed

  • Risk Reduction

  • Trust & Credibility

Watch KOROK® Intertenancy System in Action

Planning a Multi‑Unit Project?

KOROK® Intertenancy Wall System Projects

.vc_custom_1419258058654{padding-left: 15px !important;background-color: #282828 !important;}

Recent Articles

Read more

Wildfire risk is no longer a distant issue

Wildfire risk is no longer a distant issue

In buildmagazine Issue 207, researchers from the University of Canterbury explore how climate change is increasing wildfire risk and what this means for the way we design and build homes in Aotearoa — particularly at the wildland–urban interface.

A key message is that material choice and building envelope design play a critical role in how long a building can withstand fire exposure, helping to slow ignition and buy valuable time for occupants to evacuate. Research following events such as the Lake Ōhau fire highlights the vulnerability of combustible materials when exposed to embers, radiant heat and direct flame contact.

This reinforces the importance of using fire-resisting, non-combustible building systems as part of a broader, resilience-focused approach to fire safety. At KOROK, our fire-rated wall systems are designed to provide robust fire separation and proven performance, supported by testing and BRANZ Appraisals, helping create buildings that are better prepared for emerging fire risks. As wildfire threats continue to evolve, evidence-based design and material selection will be essential to protecting communities and improving long-term resilience.

📖 Recommended read: “Are we ready for wildfire at our doorstep?” – build magazine, Issue 207

Recent Articles

Read more

Fire safety design succeeds or fails on coordination

Fire safety design succeeds or fails on coordination

In #buildmagazine Issue 207, BRANZ highlights how unclear roles, fragmented documentation and poorly coordinated fire safety decisions continue to drive RFIs, consent delays and on-site risk — and how the updated PN22 guidelines aim to address this.

A key takeaway is the importance of locking in proven, proprietary fire-rated systems early, with clear performance evidence, defined responsibility, and documentation that can be traced from design through to construction.

This directly reflects how KOROK supports fire safety design in practice. Our fire and acoustic wall systems are BRANZ Appraised, system-tested in the BRANZ fire laboratory, and supported by clear standard details — making it easier for design teams to reference performance, allocate responsibility and demonstrate compliance during consenting.

When fire safety systems are clearly defined and well documented, coordination improves, uncertainty on site is reduced, and the path to a Code-compliant building becomes far smoother.

📖 Recommended read: “Coordinating fire safety design” –  build magazine, Issue 207

Recent Articles

Read more

Fire safety is about systems, not just materials

Fire safety is about systems, not just materials

BRANZ’s latest BUILD magazine article, “Burning for better outcomes”, highlights why understanding fire behaviour at a full-scale, real-world level is so critical to safer buildings.

The new BRANZ fire laboratory allows entire building systems – not just individual components — to be tested as they would perform in reality. This shift is essential in understanding how fire and smoke move through complex, multi-storey buildings and in helping prevent future tragedies.

This systems-based approach strongly aligns with how we work at KOROK. Our fire and acoustic wall systems are tested in the BRANZ fire laboratory as part of the BRANZ Appraisal process, giving designers, builders and building owners confidence that performance is proven at scale – not assumed.

We’re proud to work closely with BRANZ and to support the ongoing advancement of fire science that helps raise the benchmark for building safety across Aotearoa New Zealand.

📖 Recommended read: “Burning for better outcomes” – BUILD magazine, Issue 207

Recent Articles

Read more
KOROK® Intro Brochure

KOROK® Intro Brochure

KOROK® Intro Brochure

Your Simple Guide to Our Systems and Services

For over two decades, KOROK® has been protecting New Zealand buildings with fire-rated and acoustic-rated wall systems trusted by architects, engineers, and builders nationwide.

Our new KOROK® Brochure provides an easy introduction to who we are, what we do, and how our systems can help you deliver safer, faster, and more efficient projects. Inside, you’ll find:

  • A quick overview of our systems and applications
  • Key benefits of KOROK® fire and acoustic wall systems
  • Details on our technical resources and KOROK 360 support
  • Information about our commitment to sustainability
  • Examples of major projects across New Zealand

 

Whether you’re designing, specifying, or building, this brochure is the perfect starting point to understand why KOROK® systems are trusted throughout the industry.

📘 Download the KOROK® Brochure (PDF)

KOROK® Intro Brochure

Recent Articles

Read more