GRC Curtain Wall Fire Resistance Rating Analysis: Standard Requirements and Performance Assurance

Fire rating is the safety bottom line of GRC curtain walls, and meeting standards is a prerequisite for project implementation. The fire performance of building curtain walls directly concerns the safety of people's lives and property. As a commonly used type of decorative curtain wall, GRC curtain walls must meet relevant national standards and project-specific requirements in terms of fire rating. Qinglong, a national high-tech enterprise and GRC manufacturer, combines industry standards with engineering practice to explain in detail the fire rating of GRC curtain walls and the safeguard measures.

#Fire Rating Standards: Clear Classification and Applicable Scenarios According to the Code for Fire Protection Design of Buildings (GB 50016) and the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC), GRC curtain wall fire ratings are mainly classified as Class A (non-combustible) and Class B1 (flame-retardant). Public buildings such as convention centers, museums, and high-rise buildings have high fire protection requirements and must adopt Class A fire-rated GRC curtain walls; low-rise residential buildings, commercial auxiliary buildings, and the like may choose Class B1 according to design requirements. Qinglong GRC curtain wall products have passed testing by national authoritative institutions, with standard GRC panels achieving a Class A fire rating. Their combustion performance meets non-combustible material requirements, and smoke toxicity reaches safe levels, making them suitable for all types of projects with high fire protection requirements. For example, the Shenzhen Pingshan High-tech Zone Comprehensive Service Center (a Luban Award project) adopted Class A fire-rated GRC curtain walls to ensure public safety.

#Performance Assurance: Dual Fire Protection Design of Materials and Construction The fire performance of GRC curtain walls stems from the dual assurance of materials and construction. In terms of materials, Qinglong GRC panels use cement and alkali-resistant glass fiber as the main raw materials, both of which are non-combustible; no combustible ingredients are added during production, and the formulation is optimized to enhance high-temperature resistance, showing no obvious deformation or peeling after testing at 1000℃. In terms of construction, fire compartmentation design is adopted, with fire sealing materials such as fire-resistant rock wool and fire-resistant sealant installed between the GRC curtain wall and the main structure to block channels of fire spread; for large-area GRC curtain walls, fire compartments are set up according to codes, with spacing between compartments not exceeding code requirements. The GRC curtain wall project of the Wuhan Han Show Theater successfully passed fire inspection thanks to the dual fire protection design of materials and construction.

#Engineering Practice: Qinglong's Fire Control System Qinglong has established a whole-process fire control system to ensure that GRC curtain walls meet fire rating standards. During the R&D stage, material formulations are continuously optimized to improve fire performance and high-temperature stability; during production, raw material quality is strictly controlled, and fire performance spot checks are conducted on every batch of products; during construction, fire sealing installation is standardized, with professional technical personnel providing on-site guidance to ensure that construction complies with fire protection design requirements; during acceptance, complete fire testing reports and acceptance documents are provided, in cooperation with third-party fire inspection. The 120,000-square-meter GRC roofing project of the Hainan International Convention and Exhibition Center passed fire inspection smoothly through Qinglong's whole-process fire control, becoming a model of fire-rated GRC application.

The fire rating of GRC curtain walls is a core indicator of safety performance, and compliance must be achieved through material upgrades, construction optimization, and whole-process control. With standard-compliant product performance, scientific fire protection design, and strict quality control, Qinglong provides safe and reliable GRC curtain wall solutions for all types of projects. Today, as building safety receives increasing attention, solid fire performance will become the core competitiveness of GRC manufacturers, safeguarding building safety.