Wayfinding and signage when the alarm sounds

Escape signage spends almost its entire life being ignored. People walk past exit signs and route indicators without registering them, in good light, when they know exactly where they are going. The signage exists for the few minutes in a building's life when none of that is true — when the lights may have failed, the air is filling with smoke, the occupant is frightened and disoriented, and the familiar route is suddenly the wrong one. Designing and maintaining signage for that moment, rather than the everyday one, is the discipline.

It is easy to treat wayfinding as a box ticked at handover. The signs went up, they meet the standard, the job is done. But signage degrades, gets obscured, becomes wrong when the building changes, and fails silently when its power is lost. The question worth asking is not whether the signs are present, but whether they would still work under the only conditions that matter.

The conditions signage actually has to survive

Evacuation does not happen under showroom conditions. It happens under some combination of low or failed lighting, smoke reducing visibility to a metre or less, occupants who may not know the building, and the stress that narrows attention and degrades decision-making. Signage that reads clearly to a calm person in daylight may be useless to a frightened one in smoke.

That gap between test conditions and real conditions is where most signage problems live. A sign mounted too high disappears as smoke banks down from the ceiling. A route that relies on a single sign at a decision point fails if that sign is obscured. An exit sign without its own power source goes dark exactly when it is needed. None of these faults show up in a quick visual walk-round in good light, which is why they persist.

What the fire risk assessment should be testing

Signage and wayfinding are properly part of the fire risk assessment, not a separate cosmetic concern. The FRA is required under the Regulatory Reform (Fire Safety) Order 2005, and the Fire Safety Act 2021 clarified that it must address the structure, external walls and flat entrance doors (gov.uk) — but the means of escape, including how people find them, sit at its core.

A genuine assessment of wayfinding asks harder questions than "is there a sign":

• Is there clear directional signage at every decision point, not only at the exits themselves?
• Would the signage remain visible if smoke banked down, and is it positioned with that in mind?
• Does the emergency lighting cover the routes and the signs, and is it tested?
• Are the routes the signage points to actually available, or has a later alteration blocked one?
• For a building relying on stay put, is the messaging consistent with that strategy rather than contradicting it?

An FRA that records signage as a tick has not tested it. One that imagines the conditions of an actual evacuation has.

The strategy the signage has to match

Signage cannot be designed in isolation from the building's evacuation strategy, and getting that relationship wrong is its own failure. A building operating a stay-put strategy sends a different message from one expecting simultaneous evacuation, and the signage, the fire action notices and the resident information all have to agree. Mixed or contradictory messaging in a stairwell is worse than none, because it costs the occupant decision-making time they do not have.

This matters most where the strategy is changing or under question — for instance where compartmentation can no longer be relied upon and a building has moved to a different evacuation approach. The signage has to move with it. We have written more about this in evacuation strategies beyond stay put, and the principle is simple: the signs have to tell people to do the thing the strategy actually wants them to do.

Maintenance is the part that lapses

Signage is installed once and then quietly decays. Emergency lighting fails and is not noticed because nobody tests it under load. Signs are taken down during decoration and not replaced. A refurbishment moves a wall and leaves a sign pointing at it. Storage accumulates in a way that obscures a route indicator. Each is small; together they hollow out a system that looks compliant on paper.

The remedy is a maintenance routine that treats signage and emergency lighting as the life-safety systems they are, with scheduled function tests and a record of each one. The same loop that keeps fire doors and firefighting equipment in order applies here: check on a cadence, record the result, fix the fault. Where signage is concerned, the test that matters is the one done with the normal lighting off, because that is the only way to see what an occupant would actually see.

Keeping signage in step with the building

The most insidious failure is signage that was correct and became wrong. Buildings change — routes are altered, exits are reconfigured, floors are subdivided — and signage installed for the old layout points confidently in the wrong direction. An occupant who trusts it is led away from safety, which is worse than no signage at all.

Keeping signage current means treating every alteration as a prompt to check the wayfinding, and feeding the result back into the building's plans so the escape routes on the drawing match the signs on the wall. In SAMRISK, signage and emergency lighting checks can sit on the compliance calendar alongside the rest of the fire-safety regime, with the results recorded against the building.

The point of all this is narrow and absolute. Signage works for a few minutes that almost never come, under conditions it is almost never tested in. The job is to make sure that when those minutes arrive, the signs are present, lit, correct and pointing at a route that is actually open.