Fire Resistance Information
Fire resistance can be measured in terms of either integrity and insulation or integrity only. Protection levels are measured in defined periods (30,60,90,120,180 minutes. Fire resistant or heat resistant glass must always be specified as part of a tested and approved glazing system, rather than just the glass itself, it is all the components that comprise the fire resistant barrier that must be specified and installed by specialists.
Fire Glass is composed of float glass and intumescent interlayers, It may also have a wire mesh interlayer to give it enhanced strength and integrity at high temperatures.
Standard Toughened Glass is made from annealed glass which has been heat treated to enhance the structural properties of the glass to improve impact resistance. Standard Toughened Glass, made to BS 6206, has not been tested for heat or fire resistance or made for this purpose and is not provided as part of a glazing system that is suitable for installation where fire or heat protection is important. Toughened glass is up to 500% stronger than standard annealed glass, and therefore is more resistant to thermal breakage and can withstand greater windloads and impacts. It can be used within a temperature range of minus 70°C to plus 250°C.