Glass > Resistance to fire
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Principles
Resistance to fire is the ability of the glass to resist the passage of fire in terms of smoke (integrity) or heat (insulation).
It should be noted that the fire resistance of installed glazing is dependent not only on the performance of the glass but also the framing and sealing details.
The classification is given simply as a period of resistance in minutes. It is for the specifier to select an approriate resiatnce period taking account of national and local regulations and the specific requirements of the project.
Standards
| EN 13501-2 | Fire classification of construction products and building elements. Classification using data from fire resistance tests, excluding ventilation services |
| EN 1364-1 | Fire resistance tests for non-loadbearing elements. Walls |
| EN 1364-3 | Fire resistance tests for non-loadbearing elements. Curtain walling. Full configuration |
Method of test
The fire resistance performance of glass can only be assessed by testing a glazed assembly (window, door or curtain wall). Relevant test standards are listed above. A CE Mark on glass showing a fire resistance class means only that the glass is capable of attaining that class of performance if appropriately framed.
Classification
Classification of glass is by type of performance and period of resistance. Class E30 means that a glass will provide insulation for a period of 30 minutes. Class I30 means that a glass will resist the passage of smoke and gas for a period of 30 minutes. A product of classification EI60 will provide insulation and resist the passage of smoke and gas for a period of 60 minutes.
CE Marking
In UK Building Regulations resistance to fire may be required if glass is:
Most glazing products offer little or no fire performance and are marked npd.