• Engineered fire and acoustic systems for industrial and commercial spaces

Along with dividing walls for sheds, factories and warehouses, KOROK systems are suitable for:

• Cinema walls
• Intertenancy walls for terraced housing
• Lift shaft, stair and duct walls
• Acoustic barriers
• External and boundary walls for sheds, factories and warehouses
• Intertenancy walls for apartments, hotels and retirement complexes

KOROK systems are suitable for all areas of New Zealand.

• Panels interlock with clip-together simplicity for rapid installation
• Can be dismantled and reassembled to accommodate changing requirements
• Installed vertically or horizontally

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The NZBC sets out both the legal minimum sound transmission between tenancies (Clause G6) and minimum levels of fire resistance (Clauses C3 and C6). The KOROK Intertenancy Systems Manual provides guidance on the specification and construction of systems that will both meet and exceed those minimum levels. However, designers should consider the comfort of occupants when selecting a system that will satisfy the occupants' expectations when using the space rather than the minimum required by law.

NZBC:

• Clause B1: Structure — The KOROK Systems meet the requirements for loads arising from self-weight, earthquake, wind, impact and creep and shrinkage
• Clause B2: Durability — Under normal conditions of dry internal use KOROK Intertenancy Systems have a serviceable life in excess of 50 years and satisfy the requirements of NZBC Clause B2 Durability
• Clause C3: Fire Affecting Areas Beyond the Source — KOROK Intertenancy Systems can be used to provide passive fire protection in accordance with the requirements of NZBC Clause 3: Spread of Fire
• Clause C6: Structural Stability —Compliance with (NZBC) Clause C6 'Structural Stability'. In order to satisfy the requirements of the New Zealand Building Code (clause 6) relating to Structural Stability designers must ensure that KOROK elements are supported by primary elements that have at least the same fire rating as the KOROK system that is used
  Where the primary elements supporting the KOROK system are outside the fire cell, there is no requirement to apply the same FRR as the KOROK system. Notwithstanding, post fire stability requirements of the NZBC must also be satisfied
• Clause G6: Airborne and Impact Sound — KOROK Intertenancy Systems, both meet and exceed the minimum requirements outlined in NZBC Clause G6. Consideration should be given to both the minimum requirements and the comfort of occupants

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BRANZ Appraised

Environmental Product Declaration (EPD)

• For lift shafts and duct walls
• Panels can be installed from one side only and before the building is watertight

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The NZBC sets out both the legal minimum sound transmission between tenancies (Clause G6) and minimum levels of fire resistance (Clauses C3 and C6). The KOROK Intertenancy Systems Manual provides guidance on the specification and construction of systems that will both meet and exceed those minimum levels. However, designers should consider the comfort of occupants when selecting a system that will satisfy the occupants' expectations when using the space rather than the minimum required by law.

NZBC:

• Clause B1: Structure — The KOROK Systems meet the requirements for loads arising from self-weight, earthquake, wind, impact and creep and shrinkage
• Clause B2: Durability — Under normal conditions of dry internal use KOROK Intertenancy Systems have a serviceable life in excess of 50 years and satisfy the requirements of NZBC Clause B2 Durability
• Clauses C3: Fire Affecting Areas Beyond the Source — KOROK Intertenancy Systems can be used to provide passive fire protection in accordance with the requirements of NZBC Clause 3: Spread of Fire
• Clause C6: Structural Stability —Compliance with (NZBC) Clause C6 'Structural Stability'. In order to satisfy the requirements of the New Zealand Building Code (clause 6) relating to Structural Stability designers must ensure that KOROK elements are supported by primary elements that have at least the same fire rating as the KOROK system that is used
  Where the primary elements supporting the KOROK system are outside the fire cell, there is no requirement to apply the same FRR as the KOROK system. Notwithstanding, post fire stability requirements of the NZBC must also be satisfied
• Clause G6: Airborne and Impact Sound — KOROK Intertenancy Systems, both meet and exceed the minimum requirements outlined in NZBC Clause G6. Consideration should be given to both the minimum requirements and the comfort of occupants

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BRANZ Appraised

Environmental Product Declaration (EPD)

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 Specialised 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.

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The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:

• Clause B1 Structure:Performance B1.3.1, B1.3.2, B1.3.3(a), B1.3.3(b), B1.3.3(c), B1.3.3(f), B1.3.3(h), B1.3.3(i), B1.3.3(j), B1.3.3(m), B1.3.3(q), B1.3.4
• Clause B2 Durability:Performance B2.3.1, B2.3.1(a), B2.3.1(b), B2.3.1(c), B2.3.2, B2.3.2(a), B2.3.2(b)
• Clause C3 Fire affecting areas beyond the fire source:Performance C3.4(a), C3.6
• Clause C6 Structural stability:Performance C6.2
• Clause F2 Hazardous building materials:Performance F2.3.1
• Clause G6 Airborne and impact sound:Performance G6.3.1

See BRANZ Appraisal 559 for full information.

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BRANZ Appraised

Environmental Product Declaration (EPD)

Test Results