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Home › Safety Signs Explained › Photoluminescent signs

A Guide to Photoluminescent Signs

Glow-in-the-dark signs make exits and fire equipment easy to spot when the power goes out, and they need no wiring or batteries.

How glow signs do their job

During the day, photoluminescent material soaks up ordinary light and gives it back as a green-yellow glow once it gets dark. The signs need no electricity, so they stay readable during a blackout, through load shedding and in smoke-filled passages.

EXIT →

Escape path

Arrows and running figures that mark the way out.

EXIT →

Firefighting equipment

Glowing versions of extinguisher and hose reel signs.

EXIT →

Stair and step markers

Glow strips and step edges on staircases.

Glow signs versus lit exit signs

PhotoluminescentElectrically lit
Power neededNoneMains power with battery backup
Keeps working during load sheddingYesOnly for as long as the battery holds
MaintenanceWipe clean and keep in the lightBattery and lamp checks
CostLowHigher, plus installation
Best useEscape routes, stairs, firefighting equipmentMain exits of large public buildings
Many buildings use both: lit exit signs at the main doors and photoluminescent signs along the whole route and on fire equipment.

Where to install them

  • Over every emergency exit door
  • At each turn along an escape route
  • Low down on the walls of long passages, where smoke is lighter
  • On stairs and on landings
  • Over fire extinguishers, hose reels and alarm call points

Common questions

How long does the glow last?

The length of the glow depends on the material grade and how much light the sign soaked up. Good-quality signs stay visible for a long time after the lights go off, long enough for people to leave a building. Ask us which grade suits your fire plan.

Do glow signs need electricity?

No. They soak up normal room light and give it off in the dark, so they still work during a power cut or load shedding.

Where should glow signs go?

On escape routes, exit doors, stairwells, firefighting equipment and alarm call points: anywhere people need to find their way in the dark.

Will they work in a room that is never lit?

No. The sign needs light to charge. Fit them where the normal lighting is switched on during working hours.

Get your signs ordered today

Xpress Print produces SABS-style safety signs on ABS, aluminium, Chromadek, Correx and photoluminescent vinyl, based in Rivonia, Johannesburg. Share the sign codes and sizes and we will send you a quote.

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