Deflection head details are specialized components used in wall and partition systems to accommodate vertical or horizontal movement in a building’s structure.
They are typically placed at the top of walls, allowing the structure to expand, contract, or shift without compromising the wall’s integrity or performance.\
This movement can be caused by various factors, such as dead loads, live loads, thermal expansion, or seismic activity. At KOROK Building Systems, our deflection head solutions are designed to provide the flexibility and stability needed in high-performance wall systems.
Dead and live loads can cause significant deflection in some structures. KOROK® can provide deflection C-track details where deflection loadings are considered.
KOROK deflection head details:
Maintain Structural Integrity: Designed to allow movement in walls without damaging the structure, these details help prevent cracking or separation in response to building movement.
Ensure Fire and Acoustic Performance:KOROK deflection heads are rigorously tested to retain fire resistance and acoustic ratings, even with movement, maintaining protection in all conditions.
Seismic Readiness: In New Zealand, where seismic activity can impact building structures, our deflection head designs are engineered to absorb and adjust to seismic forces, supporting safe and resilient structures.
Whether used in commercial or residential projects, KOROK’s deflection head details meet the highest industry standards, offering a reliable solution for builders, architects, and contractors who prioritize safety, performance, and durability.
The Ultimate All-in-One Solution for Fire & Acoustic Rated Intertenancy Wall Systems
For over 25 years, KOROK has been a trusted provider of high-performance fire and acoustic walls for the multi-level construction market. Now, with the introduction of the KOROK KIR high-performance intertenancy apartment wall systems, KOROK offers comprehensive solutions for seamless floor plate transitions.
Our systems integrate lift cores, riser ducts, stair cores, hallways, and apartments into one streamlined package. Experience unparalleled fire, seismic, acoustic, and safety protection with KOROK – your all-in-one solution for modern construction needs.
Simplify with KOROK: Combining Performance and Safety
Experience the perfect blend of simplicity and performance with KOROK. Our range of IT wall solutions incorporates fire protection, seismic deflection, passive safety, and acoustic efficiency, all while eliminating complex build-ups. KOROK delivers unmatched performance, safety, and simplicity for your construction needs.
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.
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.
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 that 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.
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.
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Fire rated protection of junctions between KOROK® walls and structural steel
Ensuring fire-rated protection for junctions between KOROK® wall systems and structural steel columns and beams is critical for maintaining the integrity of fire protection systems in commercial and residential buildings.
This guide provides a quick reference for builders, engineers, architects, and designers to assess, design, and install fire-rated junctions without compromising the fire protection applied to steel structures. Whether you’re working with steel columns, beams, or other structural elements, KOROK® wall systems offer reliable fire resistance and acoustic performance.
Since fire protection linings and coatings are designed to meet the specific requirements of each column, beam, and loading condition, we recommend consulting your structural engineer or fire engineer for precise junction details.
For more information on fire-rated junction systems and KOROK® fire-rated wall systems, please refer to your project’s design team or review KOROK technical literature.
Hoyts Cinema Complex, – KOROK® Wall Systems in Action
The Ormiston Hoyts Cinema Complex is part of a large shopping mall development in South Auckland’s Flat Bush. With eight theatres, the project required effective soundproofing to enhance the cinema experience.
KOROK® Panels for Acoustic Performance
The theatre walls feature a double layer of 78mm KOROK® panels with a gap filled with acoustic batts, designed to prevent sound from travelling between theatres. This setup ensures clear and uninterrupted sound for moviegoers.
KOROK® wall systems are known for their acoustic properties, making them a common choice for cinemas in New Zealand. These panels help manage sound, offer fire protection, and are straightforward to install, meeting both safety and performance needs. For more information about how KOROK® can support your next project, contact us today.
KOROK Systems used in this project
KOROK Cinemas
KOROK® is the number one choice for sound-proofing in New Zealand cinemas.
High-Performing and Lightweight Panels for Superior Building Solutions
The 78mm KOROK® panels are engineered to provide exceptional performance in both fire and acoustic applications. These panels are roll-formed from high-quality COLORSTEEL® steel strips, with the steel conforming to the rigorous AS/NZS1397:2001 standard.
The combination of steel shells and an aerated concrete core ensures outstanding durability and functionality. Weighing approximately 10.2kg per lineal metre, these panels offer a lightweight solution that does not compromise on strength or safety.
Key Benefits of KOROK® Panels
Fire Resistance: High fire ratings, ensuring safety and compliance with building standards.
In our commitment to innovation and sustainability, we are transitioning to the advanced COLORSTEEL® MAXAM™, replacing the previous COLORSTEEL® ENDURA® and COLORSTEEL® MAXX® ranges. This transition represents a significant technological advancement, enhancing the performance and longevity of our wall systems. COLORSTEEL® MAXAM™ is designed to offer superior resistance to New Zealand’s diverse environmental conditions, making it an ideal choice for a wide range of applications.
At KOROK, we understand the complexities involved in construction and manufacturing projects. That’s why we’ve introduced KOROK 360, a testament to our commitment to providing a holistic support package. The ‘360’ in our branding is more than a number; it symbolizes the full-circle support we offer, ensuring that no aspect of your project is overlooked.
Our Objective
Our goal with KOROK 360 is to redefine “support” within the construction and manufacturing industry for both new and existing clients. Offering an extensive range of services tailored to optimize and enhance every phase of your projects, from the initial concept to the final touches.
What Sets KOROK 360 Apart
KOROK 360 distinguishes itself as the first and only, New Zealand-made support package in the fire and acoustic wall systems sector. We pride ourselves on providing unparalleled support and expertise throughout the entirety of your project’s lifecycle. With KOROK 360, clients gain access to expert guidance and support at every step, ensuring a seamless, efficient, and successful project outcome.
All the Support You Need, When You Need It
Sales & Specification Support:
Our sales support team is at your disposal, ready to help you in the office, on-site, run training sessions, presentations and more. Contact Sales & Spec Support
Expert Tech Support:
Benefit from our technical experts for guidance, compliance and troubleshooting, ensuring your project keeps moving without difficulty. Contact Tech Support
Estimation & Pricing Support:
Leverage our detailed quantity surveying expertise to ensure your project’s resources are optimized, preventing waste and ensuring cost-effectiveness throughout the lifecycle of your project. Contact Support
Made to Measure:
Just like a tailor-made suit, we’ll make sure our products fit your project perfectly. We will assist you in placing your orders and ETA enquiries. Contact Orders Support
National Logistics Service:
No matter where you are in New Zealand, we’ll get our products to you right on time, so your project stays on track. Contact Logistic Support
Installation & Training Support:
Our on-ground support during the installation. Ensures compliance with standards and maximises the performance of our firewall and acoustic wall systems. Contact Installation Support
Sustainability:
Commitment to sustainability and transparency, and supporting green building practices. Contact Support
Lift Shafts, Risers, Ducts – Fire and Acoustic Rated Protection
KOROK® fire and acoustic rated wall systems offer superior solutions for lift shafts, risers, and ducts. With our innovative panel design, you can install from one side only, eliminating the need for internal scaffolding and significantly reducing construction time and costs.
Key Advantages:
Single-side installation: No scaffolding required inside the shaft, speeding up the construction process.
Pre-weather installation: KOROK® panels can be installed before the building is watertight, protecting against water ingress through open shafts and risers.
For more information or technical support on KOROK® fire and acoustic solutions for lift shafts, risers, and ducts, contact us today. We’re here to assist with any questions or specific project requirements.
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 acceptable GIB® alternatives x 120 mm strip with
sealant is fixed at 250 mm centres top and bottom, using 6g x 32 mm
drywall screws.
