All about glass > Fire resistance : E, EW & EI

The level of resistance to fire of a glazing is stated by a class & a duration expressed in minutes:

Class E 
Class EW
Class EI
ability of the element to
prevent the passage of flammes


+ low heat radiation,

  limit  the level of heat transfert


+ low heat radiation
+ Insulation,

block the heat transfert


The integrity E and Insulation I performances of fire rated glass are measured according to European Standards for complete glazed systems