What Are Deflection Head Details?

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.

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.

Dead and live loads can cause significant deflection in some structures. KOROK® can provide deflection C-track details where deflection loadings are considered.

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.

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.

At KOROK, we are committed to delivering the highest quality fire and acoustic rated wall systems, and today we are excited to introduce a major upgrade in our materials. We are transitioning to the new COLORSTEEL® MAXAM™, which will replace our previously used COLORSTEEL® ENDURA® and COLORSTEEL® MAXX® ranges. This change marks a significant advancement in the technology and performance of our wall systems.

What is COLORSTEEL® MAXAM™?

COLORSTEEL® MAXAM™ combines the renowned quality and consistency of COLORSTEEL® with innovative ACTIVATE™ technology. This new single substrate product solution is designed with corrosion resistance and longevity in mind, making it suitable for most of New Zealand’s environmental conditions.

The Benefits of ACTIVATE™ Technology

• Strategic Positioning: The aluminium/zinc/magnesium compounds in the coating are strategically positioned to activate at the start of weathering, providing sacrificial protection when it is most needed.
• Robust Barrier Formation: Magnesium compounds encourage the formation of a robust barrier at cuts and scratches, slowing the rate of subsequent corrosion.
• Long-Lasting Protection: The magnesium compounds ‘activate’ the metal coating, resulting in more effective, longer-lasting sacrificial protection.

Transitioning to the Future

The introduction of COLORSTEEL® MAXAM™ reflects our commitment to innovation and excellence. By integrating this advanced material into our KOROK wall systems, we are ensuring that our products not only meet but exceed the highest standards of performance and durability. For more information on COLORSTEEL® MAXAM™ and its benefits, please contact our customer service team.

Recent Articles

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.

Intertenancy Apartment Solution

• Early Installation
• Solid & Secure
• Tested performance
• STC rating from 55 up to 69
• Fire rating from FRR 30 to FRR 120
• Simplified program continuity
• Waste reduction with custom lengths

Read More

Wall Transition

• Tested Fire Door Solutions
• Simple transitioning for interface junctions

Corridor, Service Riser & Ducts

• Multiple wall design solutions
• Single-sided fix
• Simple passive fire service penetrations allowing for early services installation
• Programme Continuity
• Reduction in scaffolding
• Early Inspection & installation

Lift Cores

• Structural steel infills
• Intumescent coated steel connections
• Slab to Slab options
• Early fix services & lift components
• Added fall protection
• Simple penetration solutions
• Door head solutions
• Early installation & sequencing continuity

Read More

Stair Core & Scissors Stairs

• Safe exit
• Linings are optional
• Prefinished colour coated panel options
• Prefinished panel provide a cost-effective, single fixed solution
• Reduced structural steel
• Multiple installation solutions
• Programme continuity
• Small crew to install
• Lightweight simplicity
• Handrail connection

Read More

Recent Articles

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.

Recent Articles

Taking “Support” In the New Zealand Construction Industry to the Next Level

In the ever-changing and challenging world of construction, it’s crucial to have the right kind of backup to tackle any project head-on. That’s where we step in with something pretty special – KOROK 360. It’s our latest effort to provide top-notch support from start to finish on your construction projects.

What KOROK 360 Is All About

KOROK 360 is all about shaking things up a bit in the New Zealand construction industry. We think it’s time to give you a hand with a bit of everything – from getting your project off the ground to crossing the finish line. Our goal is to set a new standard for support, making sure we’re there for our new and longstanding clients.

Support and Innovation

First of its kind in New Zealand’s firewall and acoustic wall systems industry, KOROK 360 covers all bases. We’re here to make sure every part of your project runs smoothly, blending excellent support with our know-how to make your job easier.

All the Support You Need, When You Need It

• Expert Tech Support: Benefit from our technical experts for guidance, compliance and troubleshooting, ensuring your project keeps moving without difficulty. Contact Tech Support
• Dedicated 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
• Made to Measure: Just like a tailor-made suit, we’ll make sure our products fit your project perfectly. Contact 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
• 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
• EPD & Sustainability: Commitment to sustainability and transparency by providing EPDs, highlighting the environmental impact of our products and supporting green building practices. Contact Support.

New Chapter

KOROK 360 embodies our commitment to innovation, providing the comprehensive support you need. Welcome to KOROK 360, where your project’s needs are met with precision, expertise, and solid support.

Recent Articles

High‑Performance Fire and Acoustic Wall Systems

KOROK® provides a full range of engineered fire and acoustic wall systems designed for New Zealand’s residential, commercial, and industrial buildings. Our systems are rigorously tested, easy to install, and built to meet the latest compliance requirements. Explore our solutions for intertenancy walls, external façades, cinemas, industrial spaces, lift shafts, risers, ducts, and scissor stair applications.

KOROK® has 2-way fire-rated wall systems for fire separation of Scissor Stairs or any Stairs.

KOROK® Scissor Stair Systems are proprietary, non-loadbearing, two-way fire-rated wall systems designed to provide fire and acoustic separation between independent stair flights within scissor stair configurations or other stair arrangements.

The system utilises 78mm thick interlocking KOROK® panels installed between two independent stair stringers to form a continuous fire-resisting barrier. Panels may be oriented vertically, horizontally, or in combination to suit stair geometry and construction sequencing requirements.

The system is BRANZ tested and Warringtonfire assessed, and is intended to meet or exceed the performance requirements of the New Zealand Building Code (NZBC) and NCC Australia within the defined scope.

How the System Works

KOROK® Scissor Stair Systems are constructed using 78mm thick panels comprising roll-formed galvanised or colour steel outer shells with an aerated concrete core and interlocking tongue-and-groove profiles, forming a continuous, tightly sealed wall plane that reduces the risk of acoustic leakage between stair flights. The system is non-combustible and provides two-way fire resistance when exposed from either side. In fire conditions:

• Horizontal fire resistance is achieved through a quadrilateral fire-resistant section formed between the two independent stairs
• Vertical fire resistance is achieved through the wall-to-stair stringer boundary condition

KOROK® Scissor Stair Systems provide independently tested Fire Resistance Ratings up to –/120/120 and –/60/60 depending on configuration, while the 78mm interlocking panels deliver acoustic performance up to STC 76, meeting or exceeding NZBC Clause G6 requirements through their aerated concrete core and tightly sealed joint geometry.

Download Technical Data and CAD Drawing 

KOROK® Building Systems NZ Ltd offers high-quality KOROK Fire Doors designed to enhance the fire safety of residential, commercial, and industrial buildings across New Zealand. These KOROK Fire Doors are engineered to meet the latest fire rating and compliance standards while ensuring cost-efficiency, design flexibility, and ease of installation.

Why Choose KOROK® Fire Doors solutions?

• Superior Fire Protection: Our fire doors provide optimal fire resistance, safeguarding people and property.
• Compliance Assurance: All our KOROK Fire Doors systems are fully compliant with New Zealand Building Code (NZBC) standards.
• Sustainability: We prioritize eco-friendly materials and sustainable manufacturing processes.