Fire Resistant Glazing

Crittall Fendor’s experience in fire resistant glazing gained over thirty years, is unsurpassed in the UK. With projects ranging from fire doors to multi-million pound project.

Crittall Fendor has worked on some amazing projects from the Halley V1 Antarctic research station to King’s Cross railway station and Marks and Spencer’s Had Quarters.

The company offers a range of fire resistant systems as well as its own patented FireLine system which is loved by architects for its super fine sight line without compromising the fire resistant properties of the structure.

Understanding Fire Resistant Glazing Terminology

The British Standards (BS) that refer to fire resistant glazing are, BS476 Part 20 & Part 22.
The European Standards are: EN13501-2, EN 1363, EN1364, EN1365, and EN1364. The European definitions referring to fire resistant glass are shown below:

Integrity is the ability of the glass and/or frame to contain the flame for the period of time for the integrity specified. Glass is specified as 30/0 or E 30 meaning the fire will be contained for 30 minutes.

Insulation is an additional function to Integrity. All fire resistant glass have integrity; not all have insulation. Insulating glasses and frames will contain the rise in temperature on the non fire side. The rating is expressed as 30/30 or EI 30 meaning that both fire and heat will be contained for 30 minutes.
Maximum Integrity and Insulation values are typically 120/120 or EI120 at a standard time temperature curve however Fendor’s HydroCarbon window achieved 46 minutes Insulation and over an hours integrity during a hydrocarbon fire test where the temperature is an almost instant 1000˚C.

For more information or to arrange an architect CPD accredited seminar, please contact