Designing townhouses, apartments, and terraced housing is always a balancing act. On one hand, you need to ensure absolute compliance with fire and acoustic separation standards. On the other, you’re under pressure to keep the build practical, efficient, and cost-effective. The systems you specify can either make that process seamless – or create unnecessary challenges. That’s why more architects are turning to KOROK® Fire and Acoustic Wall Systems
Why Architects Choose KOROK® in Residential Projects
Confidence in fire and acoustic performance is at the heart of KOROK®. Every system has been thoroughly tested, BRANZ-appraised, and designed to meet New Zealand’s strict compliance requirements. For residential projects, this reliability gives peace of mind – whether you’re working on attached homes or a multi-level apartment complex.
Equally important is speed. KOROK® panels are lightweight, pre-finished, and engineered with a steel shell and aerated concrete core. This reduces the need for multiple linings and accelerates installation, keeping builds moving forward and helping architects see their designs realised without compromise.
KOROK® also makes detailing simpler. The systems are straightforward and practical, allowing you to integrate fire and acoustic separation into your plans without excessive complexity. This ease of design translates into fewer site issues, ensuring a smoother construction process overall.
And then there’s sustainability. With panels that can be reused across projects, KOROK® helps reduce construction waste throughout the building lifecycle. For architects working to meet client expectations and growing environmental standards, this makes it a solution that balances performance with responsibility.
Designed for Residential Intertenancy
From terraced housing to multi-level apartments, KOROK® Intertenancy Systems are designed to integrate seamlessly into residential projects. They provide the reliable fire and acoustic separation you need, while also reducing time spent on problem-solving during construction.
Supporting Architects Beyond the Build
KOROK® goes further than supplying systems. Through CPD-accredited presentations, we provide architects and specifiers with practical knowledge that can be applied directly to projects – all while earning valuable CPD points. It’s one more way we support your professional growth alongside delivering building solutions.
KOROK Noise Control Systems: Additional Acoustic Solutions
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 Noise Control Systems – Additional Acoustic Solutions
Advanced Noise Control Solutions for Targeted Acoustic Performance
KOROK Building Systems introduces additional Acoustic solutions designed to tackle specific sound challenges in modern construction. Originally driven by the unique requirements of cinemas and terraced housing, these solutions bring versatile applications to a wide range of environments, enhancing comfort, privacy, and overall sound quality.
How Noise Control Systems Work
Our systems use a blend of wall densities and build-ups that are tailored to meet the specific acoustic needs of each project. By combining technical insights with flexible design, we provide solutions that integrate seamlessly into diverse building types while maintaining industry-leading standards in acoustic performance.
Key Applications of Noise Control Systems
Cinemas: Create immersive audio experiences without disruptive sound bleed between theaters, ensuring each audience enjoys undisturbed sound quality.
Terraced and Multi-Unit Housing: Reduce noise transfer between units to give residents a quieter, more comfortable living environment.
Other Specialized Spaces: Whether it’s office environments, hospitality spaces, or other commercial projects, our Noise Control Systems improve sound management, making shared and private spaces more acoustically efficient.
Our additional acoustic solutions were developed with a focus on solving specialized acoustic issues. By studying the effects of various wall densities and configurations, we’ve created adaptable systems that address distinct sound transmission concerns. From minimizing sound bleed in high-traffic areas to achieving optimal acoustic separation between units, KOROK Noise Control Systems meet the needs of complex acoustic demands.
Resources for Design, Compliance, and Installation
KOROK® provides a comprehensive library of technical resources to support designers, architects, engineers, and installers in achieving compliant, high‑performance fire and acoustic wall solutions. Access detailed guidance on installation, seismic performance, noise control, junction protection, fire‑rated components, and system selection all in one place.
KOROK has a culture of investing in product testing across our core market segments, believing in developing systems that simplify construction with robust, evidence-based performance.
In the Technical Bulletin for July 2024, we discuss how, as our market evolves, so does the demand for high-performance, compliant systems. KOROK continually strives to stay ahead, providing evidence-based solutions, supporting documentation, technical support, and literature to the New Zealand Construction Industry.
Our technical team, led by David Cornelius, brings a wealth of experience and a deep passion for the KOROK brand. We balance product innovation, testing, and technical support, ensuring that the industry benefits from practical, test-based solutions in our July 2024 bulletin.
Pathway to testing:
KOROK collaborates with leading institutions such as BRANZ, Auckland University Acoustics Testing Services, CSIRO, and Warringtonfire Australia, alongside industry-leading fire and structural engineers, manufacturers, and consultants. This collaboration aims to deliver performance-based solutions outlined in our July 2024 Technical Bulletin to meet ever-evolving design requirements.
The testing process begins by identifying industry challenges, followed by setting objectives and the steps required to facilitate a solution. KOROK evaluates both suitability and compliance requirements while considering simple installation methodologies. A systematic evaluation of needs leads to a well-structured test program and assessments for the July 2024 period.
In the July 2024 Bulletin, David and his team rigorously assess and refine processes, aiming to provide the market with simple, high-performance systems and applications that enhance both functionality and efficiency. Our goal is to ensure that every product meets the highest standards of performance and reliability outlined in the Technical Bulletin.
51mm KOROK® panels are rollformed from zinc coated steel strips. The steel from which the shells are manufactured conforms to AS/NZS1397:2001. Steel shells have a base metal thickness of 0.4mm B.M.T. with a Z275 zinc coating. These panels have an aerated concrete core and weigh nominally 10.2kg per lineal metre.
KOROK® produces 51mm panel. KOROK® 51mm panel provides a -/60/60 FRR and is perfectly suited for terraced house intertenancy walls and apartment intertenancy walls. The narrower gauge allows you to keep more floor space as it isn’t taken up by walls.
Performance and Features
Fire Rating: KOROK® 51mm panels provide a fire resistance rating of -/60/60 FRR, meeting stringent safety requirements for intertenancy walls in terraced houses and apartments.
Acoustic Efficiency: Designed to reduce sound transmission, these panels ensure quieter living environments, making them an excellent choice for densely populated or high-traffic areas.
Space-Saving Design: The 51mm thickness allows for slimmer walls, helping to maximize valuable floor space without compromising structural integrity or performance.
Vertical Orientation: Panels are installed vertically and secured to timber or steel framing with aluminum brackets.
Versatility: Compatible with wall framing, insulation, and linings specified within the system appraisal, ensuring seamless integration into your building project.
Scope of Use: Appraised for all buildings of all importance levels as defined by AS/NZS 1170.
Engineered for Ultimate Sound Isolation and Code-Compliant Fire Safety
KOROK® is the leading provider of fire and acoustic rated protection for cinemas across New Zealand. Our systems are specifically designed to deliver superior soundproofing and fire resistance, making them the ideal choice for cinema construction and renovation projects. Indeed, when considering fire and acoustic rated solutions, our KOROK® systems stand out for cinemas.
Why Choose KOROK® for Cinemas?
Superior Soundproofing: Our fire-rated wall systems ensure minimal sound transmission between auditoriums, enhancing the cinema experience along with fire and acoustic protection for cinemas.
High Fire Resistance: KOROK® systems provide reliable fire protection, meeting New Zealand’s building code requirements for safety, a crucial aspect for cinemas.
Proven Performance: With years of successful installations, KOROK® has become the trusted name in cinema construction, providing unmatched fire and acoustic solutions that cinemas can rely on for both safety and sound quality.
The internal side lined with 1 layer 19mm GIB Fyreline® or acceptable GIB® alternatives or 2 layers 10mm GIB Fyreline® or acceptable GIB® alternatives.
Longrun profiled steel cladding system as selected.
The internal side lined with 1 layer 19mm GIB Fyreline® or acceptable GIB® alternatives or 2 layers 10mm GIB Fyreline® or acceptable GIB® alternatives. Longrun profiled steel cladding system as selected
1 layer 10mm GIB® Standard plasterboard or equivalent each side
Acoustic insulation must be either Autex GreenStuf SW90 or Pink Batts R 2.2 each side.
KOROK® metal fire flashing is installed to the top C-track.
KOROK® metal KIT flashing is installed to horizontal joints.
90mm steel or timber frame each side
86mm overall. Framing not to touch KOROK® panel or fire flashing
KOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.
1 layer 10mm GIB® Standard plasterboard or equivalent each side
Acoustic insulation must be either Autex GreenStuf SW90 or Pink Batts R 2.2 each side.
KOROK® metal fire flashing is installed to the top C-track.
KOROK® metal KIT flashing is installed to horizontal joints.
90mm steel or timber frame each side
80mm overall. Framing not to touch KOROK® panel or fire flashing
KOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.
KOROK® metal fire flashing is installed to the top C-track OR 13 mm GIB Fyreline® or equivalent x 120 mm strip with sealant is fixed at 250 mm centres top and bottom, using 6g x 32 mm drywall screws.
