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InteriorInterior
Deflection Head Details
Description

Deflection head details are specialised 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.

Key Features
  • 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.
Scope of Use

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 prioritise safety, performance, and durability.

Documents
KOROK Intertenancy Terraced Housing Systems Manual v47

June 2026 v47

KOROK® Ceiling and Bulkhead Systems

May 2026 Version 2

KOROK Deflection Head Details
KOROK Installation
KOROK Sustainability

New Zealand’s leading manufacturer of fire-rated and acoustic-rated wall systems. Designed for Protection, Built to Perform.

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