Certified Fire Rated Glass for Stockholm’s Stringent Building Fire Safety Codes

Stockholm’s construction sector operates under one of Europe’s most rigorous fire safety frameworks, governed by Boverket’s Building Regulations (BBR 29) and the European classification system SS-EN 13501-2. For glazed partitions, doors, and curtain walls, the primary challenge lies in balancing architectural transparency with mandatory integrity (E) and insulation (I) performance criteria. In Swedish commercial and multi-residential projects, fire-rated glazing must demonstrate verified resistance to flame penetration and heat transfer, particularly in escape routes and stairwell enclosures where EI 30 to EI 60 classifications are commonly enforced by local building committees. Antifires provides a comprehensive range of certified fire-rated glass systems engineered to meet these localized demands, with test reports aligned to BS 476 Part 22 and BS EN 1634-1 standards, which are widely accepted by Swedish authorities as equivalent evidence of compliance. The product portfolio includes 28mm EI60 panels (Integrity 66 min, Insulation 64 min) and 50mm/54mm EI120 systems (Integrity 120 min, Insulation up to 120 min), both suitable for high-risk zones in Stockholm’s mixed-use developments. For detailed regulatory guidance, refer to the official Boverket BBR 29 publication. Architects and specifiers can further explore certified 60 minute fire rated glass systems designed for Swedish stairwell and corridor applications.

Navigating Stockholm’s BBR 29 Fire Resistance Requirements for Glazed Partitions

Under BBR 29, glazed elements serving as compartment walls or escape route enclosures in Stockholm must achieve a minimum EI 30 classification, with EI 60 frequently mandated for stairwells in buildings exceeding eight storeys. The regulation distinguishes between integrity-only (E) and combined integrity-insulation (EI) performance, requiring that glass assemblies limit the average temperature rise on the unexposed side to ≤140°C and the maximum to ≤180°C. This is particularly critical in multi-residential towers where smoke and heat propagation through glazed partitions can compromise occupant evacuation. Antifires’ 26mm door glass (Integrity 89–90 min, Insulation 68 min) and 28mm EI60 panels (Integrity 66 min, Insulation 64 min) are engineered to meet these thresholds, utilizing multi-layer tempered glass with intumescent gel layers that activate under fire exposure. For Stockholm’s commercial egress routes, the 21mm FPOS configuration (Integrity 120 min, Insulation 30 min) offers a balanced solution where extended integrity is required but partial insulation suffices. These systems are installed using G.M.S. hollow steel frames with ceramic wool (3–6mm, density 210 kg/m³) and intumescent fire seals (20mm × 4mm) to prevent gap penetration. Specifiers should consult the 90 minute fire rated glass range for projects requiring enhanced integrity performance in high-occupancy zones.

Specifying EI 30 to EI 120 Fire Rated Glass: Technical Parameters for Stockholm’s Climate

The Swedish adaptation of SS-EN 13501-2 aligns closely with European fire test protocols but introduces specific enforcement nuances for Stockholm’s built environment. For historical building retrofits in Gamla Stan, where original timber structures and narrow staircases demand extended fire duration tests, local authorities often require EI 60 or EI 90 classifications with verified performance under prolonged furnace exposure. Antifires’ 10mm FPOS (Integrity 135 min, Insulation 16 min) and 15mm FPOS (Integrity up to 132 min, Insulation 33–34 min) are tested under conditions including Type K thermocouples (9–12 channels) and furnace pressure of 0 ±2Pa, ensuring repeatable results. For projects requiring full insulation over extended periods, the 50mm/54mm EI120 systems achieve both integrity and insulation for up to 120 minutes, making them suitable for retrofitting heritage facades where fire-rated glazing must replace original windows without compromising aesthetic continuity. The installation protocol includes M6/M8 anchor bolts at 300–600mm spacing and 3–5mm expansion gaps filled with ceramic fiber to accommodate thermal movement. Stockholm architects can reference 120 minute fire rated glass and insulation systems for heritage-compliant solutions.

Fire Rated Glass Applications in Stockholm’s Mixed-Use Developments and Underground Stations

Stockholm’s urban development landscape features a growing number of mixed-use projects combining residential, retail, and office functions within single structures, alongside critical infrastructure such as T-Centralen and Odenplan underground stations. These environments demand fire-rated glazing that not only contains flames but also controls radiant heat transmission (W) to protect evacuation routes and adjacent compartments. For underground stations, where smoke management is paramount, Antifires supplies EW120 classified systems that limit radiant heat flux while maintaining visual transparency for wayfinding. The 8mm glass system (Integrity 73 min) and 6mm E90 glass (Integrity 90 min) are commonly specified for station mezzanine levels and platform barriers, installed within fire-rated insulation boards (12–15mm) and ceramic tape seals. In mixed-use towers, the 26mm door glass (Integrity 89–90 min, Insulation 68 min) provides the thermal insulation needed to protect residential corridors from commercial kitchen or laundry area fires. All systems undergo testing under ambient temperatures of 27°C–36°C and relative humidity of 43%–90%, reflecting Stockholm’s seasonal variations. For station-specific applications, the 60 minute fire rated glass range offers a reliable balance of performance and cost-efficiency for underground infrastructure.

Why Stockholm Architects Trust Antifires for Certified Fire Rated Glass Systems

Stockholm’s architectural community increasingly specifies Antifires for fire-rated glazing due to verified compliance with BBR 29 and SS-EN 13501-2, supported by transparent test documentation. The company’s systems are engineered to address common failure modes observed in standard glazing, such as surface glass cracking at 2–4 minutes and inner glass layer fallout at 2–6 minutes, by incorporating multi-layer intumescent gel structures that delay insulation breakdown. For example, the 28mm EI60 panel demonstrates a narrow gap between integrity failure (66 min) and insulation failure (64 min), indicating consistent thermal performance. Installation reliability is ensured through standardized framing using G.M.S. hollow steel sections and ceramic wool (3–6mm, density 210 kg/m³), with maximum deflection of 38–152mm toward the furnace accounted for in design calculations. Antifires also provides RISE (Research Institutes of Sweden) test reports for projects requiring local certification, covering cotton pad ignition, sustained flaming, and gap penetration tests. For Stockholm’s demanding projects, the 180 minute fire rated glass and insulation systems represent the highest tier of certified protection for critical infrastructure.

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Frequently Asked Questions (FAQ)

Yes, Antifires fire rated glass systems are engineered to meet the EI 60 requirements commonly mandated for Stockholm’s apartment building stairwells under BBR 29. The 28mm EI60 panel (Integrity 66 min, Insulation 64 min) and 26mm door glass (Integrity 89–90 min, Insulation 68 min) both exceed the minimum performance thresholds for integrity and insulation. These systems utilize multi-layer tempered glass with intumescent gel layers that activate under fire exposure, limiting temperature rise on the unexposed side to ≤180°C maximum and ≤140°C average. Installation follows standardized protocols using G.M.S. hollow steel frames and ceramic wool seals, ensuring compliance with local building committee inspections.

For historical building renovations in Stockholm, particularly in Gamla Stan, Antifires provides RISE (Research Institutes of Sweden) test reports for fire rated windows, covering BS 476 Part 22 and BS EN 1634-1 standards. The 15mm FPOS (Integrity up to 132 min, Insulation 33–34 min) and 21mm FPOS (Integrity 120 min, Insulation 30 min) are suitable for heritage applications where extended fire duration tests are required. Local authorities typically accept these reports as equivalent evidence of compliance with SS-EN 13501-2 classifications. Antifires also offers EW120 classified systems for projects requiring radiant heat control alongside integrity.

Antifires maintains a streamlined logistics network serving Stockholm’s central business district, with standard delivery times of 2–4 weeks for custom EI 120 fire rated glass panels. The 50mm/54mm EI120 systems (Integrity 120 min, Insulation up to 120 min) are fabricated to order with dimensions tailored to project-specific openings. For urgent commercial projects, expedited production can reduce lead times to 10–14 working days upon request. All panels are supplied with ceramic wool (3–6mm) and intumescent fire seals (20mm × 4mm) for immediate installation. Contact Antifires for a project-specific timeline and quotation.