Technical Specifications and Applications of 25mm EI60 A Level 1-Hour Fire-Resistant Glass
Technical Specifications and Applications of 25mm EI60 A Level 1-Hour Fire-Resistant Glass
Core Technical Specifications: Decoding the 25mm EI60 A Level Rating
The designation "25mm EI60 A Level" is a precise code that defines the performance envelope of this high-grade fire-resistant glass. Each part of this specification is critical for architects and engineers. 25mm refers to the total thickness of the laminated glass unit, indicating a robust construction suitable for demanding applications. The EI rating is the most crucial part, where E stands for Integrity (preventing the passage of flames, smoke, and hot gases) and I stands for Insulation (limiting the temperature rise on the unexposed side). The 60 signifies that the glass assembly maintains both integrity and insulation for a minimum of 60 minutes under standard fire test conditions. The A Level classification typically refers to the highest standard of performance against fire, often associated with complete resistance to thermal radiation and stringent insulation criteria. PYRONANO's 25mm EI60 glass achieves this through a sophisticated multi-layer structure, featuring several plies of tempered or heat-strengthened glass bonded with multiple layers of a transparent, heat-reactive intumescent interlayer. This composite ensures that under fire exposure, the interlayer swells to form a thick, opaque, and insulating char that blocks radiant heat transfer, keeping the unexposed side temperature rise well within safe limits.
Material Composition and Performance Characteristics
PYRONANO's 25mm EI60 glass is engineered as a system, not just a glass pane. Its core performance stems from the synergy between its materials. The outer layers are high-quality, thermally toughened glass sheets. This tempering process gives the glass its high mechanical strength, impact resistance, and thermal shock resistance, which is vital for withstanding the initial thermal stresses of a fire and potential physical impacts during an emergency. The heart of the product is the proprietary, transparent intumescent interlayer. This advanced gel remains crystal clear under normal conditions, offering excellent optical clarity and light transmission. Upon exposure to temperatures around 120-150°C, it undergoes a rapid chemical expansion, foaming up to many times its original thickness to create a rigid, opaque insulating barrier. This barrier is key to meeting the "I" (Insulation) criterion, as it drastically reduces heat flux. Additionally, the glass typically offers sound reduction properties (with a certain Sound Transmission Class rating), and can be further enhanced with features like low-emissivity (Low-E) coatings for energy efficiency or customized tints, all while maintaining its core fire-resistance rating. The edges are precisely finished, and the entire unit is hermetically sealed to prevent moisture ingress, ensuring long-term durability and performance stability.
Key Application Scenarios and Architectural Integration
The 25mm EI60 A Level glass is a versatile solution designed for critical applications where both life safety and property protection are paramount. Its one-hour rating makes it ideal for creating certified fire-rated compartments in various settings. Common applications include: Fire-Rated Partitions and Walls in office buildings, hospitals, and shopping malls, where it provides necessary fire separation without sacrificing open-plan aesthetics or natural light. Fire-Rated Doors and Entry Systems, including single or double-leaf doors for corridors, stairwells, and room entrances, ensuring safe egress paths remain protected. Fire-Rated Glazed Screens and Curtain Walls in atriums, lobbies, and building perimeters, offering expansive views while maintaining compartmentalization. Elevator and Lift Lobby Enclosures, where it prevents smoke and fire spread through vertical shafts. It is also specified for Industrial and Laboratory Settings requiring clear visibility of processes behind a safety barrier. When integrating this glass, it is imperative to use it as part of a tested and approved system from PYRONANO, which includes compatible, equally rated fire-resistant framing (steel or aluminum), intumescent seals, and appropriate fixings. Professional installation by certified teams is non-negotiable to ensure the entire assembly performs as a cohesive, 60-minute fire barrier, fulfilling local building code requirements.
In summary, PYRONANO's 25mm EI60 A Level 1-Hour Fire-Resistant Glass represents a pinnacle of balanced performance, combining rigorous fire safety certification with high architectural functionality. Its technical specifications guarantee 60 minutes of reliable integrity and insulation against fire, while its material composition ensures clarity, strength, and durability. As a critical component in modern building design, it enables architects to design safe, light-filled, and open environments in sectors ranging from commercial and healthcare to industrial. Specifying this glass, as part of a complete PYRONANO glazing system, provides a dependable, code-compliant solution for protecting lives, assets, and the continuity of operations.
