Certified Fire Rated Glass Solutions for Christchurch Commercial Buildings

ied Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

ed Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

ed Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

ed Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

ed Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.

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Frequently Asked Questions (FAQ)

>Certified Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.

>Certified Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.

>Certified Fire Rated Glass Solutions for Christchurch Commercial Buildings

In Christchurch’s evolving built environment, compliance with the New Zealand Building Code (NZBC) Clause C3—Fire Affecting Areas Beyond Source—is non-negotiable for commercial projects. Following the 2011 Canterbury earthquake sequence, local fire safety engineers and specifiers must select glazing systems that perform under both fire exposure and seismic loading. Antifires supplies fire rated glass and door assemblies tested to AS/NZS 1530.4 and BS 476 Part 22, ensuring integrity and insulation ratings that align with MBIE’s guidance for multi-storey structures. These products are engineered to maintain compartmentation during a fire event while accommodating structural movement inherent in Christchurch’s seismic zones. For detailed regulatory frameworks, refer to the MBIE Fire Safety Compliance page. Antifires’ systems integrate seamlessly with steel and masonry substrates, providing passive fire protection that meets local consent requirements without compromising design flexibility.

Christchurch Building Code Compliance for Fire Separation in Seismic Zones

Christchurch’s rebuild and intensification projects demand fire-rated assemblies that satisfy NZBC Clause C3 and AS/NZS 1530.4 test methods. Antifires’ glazed systems are designed to resist fire penetration while accommodating lateral displacements typical of seismic events. The integrity (E) performance of these assemblies—tested to BS EN 1634-1—ensures that gaps or sustained flaming do not compromise fire separation during a quake-induced movement. For example, 26mm door glass achieves integrity up to 90 minutes, making it suitable for stairwell enclosures in high-occupancy buildings. Frames utilise G.M.S. hollow steel sections with ceramic wool packing (3–6mm, density 210 kg/m³) to maintain seal integrity under cyclic loading. This approach supports compliance with Christchurch City Council consent conditions for multi-storey commercial towers and civic infrastructure.

Selecting EW and EI Fire Rated Glass for Christchurch’s High-Wind and Coastal Exposure

Christchurch’s coastal proximity and exposure to high-wind events require fire-rated glazing that resists corrosion and UV degradation. Antifires offers EI 30 to EI 120 fire rated glass with intumescent gel interlayers that provide thermal insulation—critical for protecting egress paths in buildings near the Avon River precinct. These assemblies are tested to AS/NZS 1530.4, with insulation performance verified by maximum unexposed surface temperature rises ≤180°C. For projects requiring radiation control, EW120-rated glass limits radiant heat flux, reducing ignition risk in adjacent zones. Frames are treated with corrosion-resistant coatings, and expansion gaps (3–5mm) are filled with ceramic fibre to accommodate thermal and wind-induced movement. This combination ensures long-term durability in Christchurch’s microclimates while maintaining fire-rated performance.

Fire Rated Partitions for Christchurch’s Heritage Retrofits and New Commercial Precincts

Projects under the Christchurch Central Recovery Plan—including developments in Addington and Riccarton—require fire-rated partitions that integrate with existing heritage masonry and modern steel structures. Antifires’ fire partition solutions utilise multi-layer composite glass (e.g., 21mm FPOS with 120-minute integrity) that can be installed within existing openings without altering facade aesthetics. For atriums and service cores, 50mm EI120 systems provide up to 120 minutes of both integrity and insulation, meeting the demands of high-traffic commercial zones. These assemblies are fixed with M8 anchor bolts at 300–600mm spacing and incorporate intumescent fire seals (20mm × 4mm) to prevent smoke and flame spread. This approach preserves heritage character while delivering modern passive fire protection compliant with NZBC Clause C3.

Antifires Local Stock and Technical Support for Christchurch Fire Safety Engineers

Antifires maintains dedicated stock in New Zealand, enabling rapid delivery to Christchurch construction sites. All fire rated glass and door assemblies carry BRANZ Appraisal certification, streamlining approval processes with Christchurch City Council. Technical support includes on-site consultation for system integration, with detailed installation guidance covering frame anchoring, ceramic wool packing, and expansion gap management. For specifiers requiring custom sizes—such as oversized panels for heritage buildings—Antifires offers fabricated solutions tested to BS 476 Part 22 and AS/NZS 1530.4. This localised support reduces project delays and ensures that fire-rated assemblies meet both performance and consent requirements for Christchurch’s unique seismic and climatic conditions.

Frequently Asked Questions

Q1: Does Antifires fire rated glass meet Christchurch’s specific seismic performance requirements alongside fire ratings?

Yes. Antifires fire rated glass systems are engineered to maintain integrity under both fire exposure and seismic loading. The assemblies use G.M.S. hollow steel frames with ceramic wool packing (3–6mm, density 210 kg/m³) and expansion gaps (3–5mm) that accommodate lateral movement without compromising fire separation. Test data from BS EN 1634-1 and BS 476 Part 22 confirm that these systems resist gap formation and sustained flaming even after structural deflection. For Christchurch projects, this dual-performance capability supports compliance with NZBC Clause C3 and MBIE’s seismic requirements for multi-storey buildings.

Q2: What fire resistance levels (EI/EW) are most commonly required for Christchurch commercial stairwells and lobbies?

For Christchurch commercial stairwells and lobbies, EI60 and EI120 ratings are most common. EI60 assemblies (e.g., 28mm glass with 66-minute integrity and 64-minute insulation) provide sufficient thermal protection for egress paths, while EI120 systems (e.g., 50mm glass with 120-minute integrity and insulation) are specified for high-occupancy cores and service shafts. EW120-rated glass is also used in lobbies where radiant heat control is critical, limiting heat flux to protect adjacent zones. All ratings are verified to AS/NZS 1530.4 and BS EN 1364-1, ensuring compliance with Christchurch City Council consent conditions.

Q3: Can Antifires supply custom-sized fire doors for heritage buildings in Christchurch’s central city zone?

Yes. Antifires fabricates custom-sized fire doors and glazed panels for heritage retrofits in Christchurch’s central city. These assemblies are tested to BS 476 Part 22 and AS/NZS 1530.4, with integrity ratings up to 120 minutes. Custom frames are manufactured from G.M.S. hollow steel sections, with intumescent seals and ceramic wool packing to match existing opening dimensions. For heritage facades, Antifires provides multi-layer composite glass (e.g., 21mm FPOS) that maintains aesthetic transparency while delivering certified fire performance. This approach ensures compliance with NZBC Clause C3 without compromising heritage character or consent timelines.