Butt Joints in Fire-Rated Walls: The KOROK Solution

When Fire Safety Meets Real-World Construction Challenges

Butt joints­­­­­ – where two panels meet end-to-end. KOROK® provides an engineered approach so your wall performs as designed across 51 mm (60-minute) and 78 mm (120-minute) KOROK panel systems.

Typical on-site scenarios: panels ordered too short, using leftover stock, restricted site access limiting panel length, or panel cuts needed for complex installations.

Applications

  • Single-panel butt joint
  • Double-panel butt joint

Methods (Butt Joints)

  • Profiled cover / steel flat plate – one or both sides, as detailed.
  • Back-to-back C-tracks – protected and unprotected variants.

Plugging Circular Holes (≤ Ø160 mm)

For small circular openings created during installation, repairs, or services, use KOROK-tested plug details to maintain system performance.

Methods

  • Fire-rated batt plug + steel flat plate
  • Fire-rated batt plug + fire-rated batt cover

Refer to the Detail Pack for FRR outcomes, fixing patterns, edge distances, sealant specification, and minimum spacings.