Fire Door Keep Locked Sign Requirements (UK)

For landlords and facilities managers responsible for service risers, plant rooms or restricted areas protected by fire-resisting doors.

When “Fire Door Keep Locked” signage is used

Where a fire door must remain secured to maintain compartmentation or restrict access, inspectors often expect a clear “Fire Door Keep Locked” instruction.

This commonly applies to:

  • service riser doors
  • plant rooms
  • cupboards or restricted areas that form part of a fire compartment

What inspectors usually expect

Signage should be:

  • clearly visible at the correct height
  • legible
  • durable
  • consistent with other fire door notices in the building

Common Fire Risk Assessment (FRA) observations

Examples include:

  • missing signs
  • handwritten instructions
  • labels that are not permanent
  • inconsistent wording

Typical remedial action

Replace with durable signage using recognised wording, fitted where it will be seen on approach.

FAQs

Are fire door keep locked signs required?

Where a door must remain secured for fire safety or access control, inspectors commonly expect clear signage so the instruction is unambiguous.


Guidance & sources

This information on this page is based on publicly available UK fire safety guidance and industry best practice.
It is provided for general information only and should be read alongside a site-specific Fire Risk Assessment and professional advice where required.