BS 476 & EN 1634 Compliance for Belfast’s Historic and Modern Building Stock
Belfast’s building stock presents a unique challenge, requiring fire-rated glazing that performs equally well in a 19th-century linen mill conversion and a 21st-century office tower. Our systems are tested to the rigorous protocols of BS 476 Part 22 and BS EN 1634-1, which define the criteria for Integrity (E) and Insulation (I) performance. For historic structures in the Cathedral Quarter, where original timber frames may be retained, we offer systems that can be engineered to provide up to EI 60 protection, limiting heat transfer to an average of 140°C on the unexposed side. Conversely, for modern developments in the Titanic Quarter, which often feature expansive glazing, our 120-minute fire rated glass systems provide both structural stability and thermal insulation. The glass composition, such as the 28mm EI60 panel (6mm + 5.5mm gel + 5mm + 5.5mm gel + 6mm), is designed to intumesce under heat, creating a rigid insulating barrier. This ensures that even in Belfast’s humid climate, the glazing maintains its fire-resistant properties without degradation, supporting both life safety and building compartmentation strategies.
Selecting Fire Rated Glass Integrity and Insulation Grades for Belfast’s Climate
Selecting the correct fire rating for Belfast’s climate requires a clear understanding of E-class (integrity only) versus EI-class (integrity and insulation) performance. For internal corridors and low-risk partitions, E-class glass, such as the 6mm E90 system (offering 90 minutes of integrity), is often sufficient to prevent flame and hot gas penetration. However, for external facades or walls adjacent to escape routes in Belfast’s temperate and humid environment, EI-class glazing is essential. The insulation rating (I) ensures that the unexposed side temperature does not exceed an average of 140°C, preventing secondary ignition of nearby materials. Our product range includes thicknesses from 5mm to 19mm, with options for high impact resistance (Class 1B1 to 1B2) to withstand accidental impact in busy urban settings. The table below summarizes key performance grades for typical Belfast applications:
| Glass Type |
Fire Rating |
Typical Application |
| 10mm FPOS |
Integrity 135 min / Insulation 16 min |
Internal vision panels |
| 28mm EI60 |
Integrity 66 min / Insulation 64 min |
Protected corridors & stairwells |
| 50mm EI120 |
Integrity 120 min / Insulation 120 min |
High-risk compartment walls |
This selection process ensures that the glass performs reliably against thermal shock and maintains transparency for natural light, a key consideration for Belfast’s often overcast conditions.
Belfast Office Fit-Outs and University Laboratory Partition Demands
Belfast’s rapidly growing sectors—fintech offices in the Linen Quarter and research laboratories at Queen’s University—demand fire-rated glazed partitions that balance safety with transparency. These high-traffic environments require systems that can withstand daily impact while providing up to 120 minutes of stability for compartmentation. Our glazed partition solutions are engineered with G.M.S. hollow steel frames and ceramic wool (density 210 kg/m³) to maintain structural integrity under fire conditions. For example, in a multi-story fintech office, a 26mm door glass system (5mm + 5.5mm gel + 5mm + 5.5mm gel + 5mm) offers 89–90 minutes of integrity and 68 minutes of insulation, ensuring safe egress during a fire. In university labs, where chemical hazards may exist, our fire partition solutions can be combined with impact-rated glass (Class 1B1) to meet both safety and visibility requirements. The installation process uses M6/M8 anchor bolts at 300–600mm spacing and 3mm–5mm expansion gaps filled with ceramic fiber, accommodating thermal movement without compromising the fire seal. This technical precision ensures that Belfast’s commercial and educational facilities achieve robust passive fire protection without sacrificing open-plan design aesthetics.
Antifires’ Track Record and Direct Support for Belfast Architects and Contractors
Antifires has over a decade of experience supporting UK projects, including numerous commercial and public sector developments in Belfast. Our team provides full certification documentation and technical drawings to facilitate Building Control approval, a critical step for Northern Ireland’s regulatory process. For architects and contractors, we offer direct consultation on supply chain logistics, ensuring that materials are available from mainland UK stock with reduced lead times. This localized support is essential for Belfast projects, where delays can impact tight construction schedules. Our systems, such as the 15mm FPOS (integrity up to 132 min; insulation 33–34 min), come with verified test data from accredited laboratories. We also provide guidance on installation specifics, including the use of intumescent fire seals (20mm × 4mm) and fire-rated insulation boards (12mm–15mm), to ensure on-site compliance. By partnering with Antifires, Belfast’s construction professionals gain a reliable partner for navigating the complexities of passive fire protection, reducing risk and ensuring that every project meets the highest safety standards.
