Windows and doors: Load bearing capacity of safety devices

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Categories: Performance : Windows & Doors

The performance characteristics listed below are relevant to products covered by EN 14351-1 Windows and doors - Product standard, performance characteristics - Part 1: Windows and external pedestrian doorsets without resistance to fire and/or smoke leakage characteristics

This requirement applies to:

Roof windowsYes

Doorsets and openable windows with fire resisting and/or smoke control characteristics are covered by EN 14600

Pedestrian doorsets, industrial, commercial, garage doors and windows are covered by prEN 16034 p> 


If the window, door or roof window is fitted with safety devices to prevent falls from height the devices should resist a minimum level of force.


EN 14609Windows. Determination of the resistance to static torsion.
EN 948Hinged or pivoted doors. Determination of the resistance to static torsion.


Method of test or assessment

It should be shown by test (to the Standards above), or by calculation, that the safety device can sustain an opening load of 350N for 60 seconds.


There is no classification. A single threshold value is used to assess performance.

CE Marking

UK Building Regulations Part K requires that sills of opening windows are at least 800 mm above floor level. For windows with lower sills the window opening should be limited to 100 mm by a safety device.

Locationnpd allowed
England and WalesNo (If safety device fitted)
ScotlandNo (If safety device fitted)
Northern IrelandNo (If safety device fitted)