A fire-rated glass partition usually ranges from 316 𝟑𝟏𝟔 inch (5 mm) to over 2 inches (50 mm) in total thickness. The exact thickness depends on the fire-rating duration required (20 to 120+ minutes), the size of the panel, and whether it is a single pane or a multi-layered insulating glass unit.
Fire-rated glass thickness typically ranges from 3163 over 16 end-fraction316" (5mm) to over 1.5" (38mm) depending on its classification, fire-rating duration, and whether it blocks flames or radiant heat. The glazing type dictates its capabilities and how thick it needs to be.
With a thickness ranging from 7-11 mm, Pyroguard Rapide is a high-performance cuttable glass which offers advanced fire protection in internal and external applications. The glass requires no edge taping and can be cut by hand for quicker processing and easier installations.
AGC Pyrobel®️ Fire-Resistant Safety Glass by McGrory Glass is a barrier-to-heat product that protects against radiant and conductive heat transfer. These ASTM E119 and UL 263 tested products have ratings up to 2 Hours, and are Cradle to Cradle Certified™, with stable, non-insulated construction for maximum performance.
Fire-rated glass partitions are engineered building systems designed to compartmentalize flames, smoke, and radiant heat. They combine specialty glazing with heavy-duty, fire-tested frames (often steel or aluminum) to create safe escape routes and maintain contemporary, light-filled architectural aesthetics in commercial spaces.
Fire-rated glass is engineered to remain intact during a fire, preventing flames and smoke from passing through. The 7.2mm Pyroguard offers a 30-minute integrity rating, meaning it can withstand the heat of a fire for half an hour, providing essential time for evacuation and firefighting efforts.
A 2-hour fire-rated wall ranges from roughly 434 inches to over 8 inches thick, depending on the materials used. Thicknesses vary based on material type:
Much less heavy and expensive than thicker glass, ¼” glass still offers the strength needed to set down a metal cup on a coffee table without worrying. Mirrors are typically ¼” thick. 3/8 Inch Glass - Shower doors and exterior furniture often utilize 3/8” glass due to its enhanced strength.
Laminated Toughened Glass, Size: 10 X 10 Feet at ₹ 250/square feet in Ghaziabad | ID: 22539192088.
However, in many flats changes to the layout of a unit may require approval from a board of residents managing the block. No standard wall thickness: The thickness of the partition wall is also fairly flexible, a frame is generally only 75 mm or 100 mm thick. However, you must calculate the entire partition wall space.
Fire-rated glass, on the other hand, can typically survive heat over 1600 degrees F. Fire-rated glass can withstand such high heat because it is engineered differently than non-rated glass. There are three main types of fire-protective glass: polished wired glass, specially tempered glass and glass ceramic.
Fire Glass Sizes
Standard fire glass comes in a variety of sizes for any gas fire feature, though our experts recommend half-inch diameter for most outdoor fire pits—it's easier and more economic. Smaller sizes, like quarter-inch or half-inch, offer better heat distribution and a consistent flame.
Every piece of genuine fire-rated glass carries specific marks and certifications. For instance, genuine Pyroguard Fire Glass is typically marked with the brand name, the standard (like EN14449), and the impact rating (e.g. 2B2).
A 1-hour and 2-hour fire-rated wall both delay the spread of fire, but they differ significantly in their construction, material thickness, and building code requirements. While both utilize fire-resistant "Type X" gypsum, a 2-hour wall provides double the structural protection time, requires heavier material assemblies, and is primarily reserved for critical applications.
The guidance indicates that if installed correctly, 1x12. 5mm fire plasterboard with a plaster skim will achieve 30 minutes fire protection. You may have to provide an additional skim coat or additional plasterboard to the ceiling.
Type III glass is soda-lime silicate glass, which contains little or no boron. Type II glass is treated soda-lime silicate glass, which begins as Type III glass and undergoes a surface treatment to increase its hydrolytic resistance. Type I glass has the highest hydrolytic resistance.
The strongest overall type of glass is Glass-Clad Polycarbonate (Ballistic Glass). For everyday and consumer architectural uses, Tempered Laminated Glass is the strongest choice. The exact type you need depends on whether you are prioritizing impact resistance, ballistic protection, or tensile strength.
Fire-rated glass typically costs between $40 and $250 per square foot for the material alone. Total costs depend primarily on the fire rating (minutes), glass type (ceramic vs. wired), and thickness. For complete installations including frames and labor, expect to pay $150 to $500+ per square foot.
Architects and designers can still use glass, as long as the assembly tested to ASTM E‐119 and is fire rated to 60 minutes, which equals the rating of the wall.
The glazing of any windows, doors and roof lights to an extension should be limited to 25% of the extension floor area (plus and doors/windows being built over) The 25% rule is set by the government and is aimed at reducing global warming.