FIRE SAFETY
Every exit sign on a Singapore worksite answers to two separate rulebooks at once — the Fire Code, which SCDF enforces, and SS 508, which sets what the sign actually looks like. Most guides online cover one or the other. Here’s both, in one place, with the numbers.
Why Exit Signs Aren’t Optional in Singapore
An exit sign sits at the intersection of two separate legal requirements. SCDF’s Fire Code (Chapter 8, Clause 8.1) governs where exit signs must be installed, how they must be lit, and how far apart directional signs can be spaced along an escape route. SS 508 — the Singapore Standard for safety signs, aligned with the international ISO 7010 pictogram system — governs what the sign itself must look like: the green background, the running-man pictogram (ISO 7010 E001), and the shape and colour rules that make it instantly recognisable regardless of what language a worker reads. An inspector checking your exit signage is really checking both at once, and getting one right without the other is a common, avoidable gap.
Where Exit Signs Are Actually Required
The Fire Code requires an exit sign above every exit door on every floor, above exit access doors in any room served by more than one exit, and above the final discharge door where an exit staircase or internal passageway leads outside. Directional signs — the arrow variants pointing toward an exit that isn’t yet visible — are required in long corridors, open floor areas, and any room where the exit isn’t in a direct line of sight, with a hard spacing rule: no point along an exit route may be more than 30 metres from the nearest visible directional sign. A handful of exemptions exist (fully open-sided single-storey buildings under certain size thresholds, small single-door rooms close to an exit with emergency lighting already in place, and a few Purpose Group-specific carve-outs), but for the vast majority of workplaces, factories, warehouses and construction site offices in Singapore, the exit-sign-above-every-door rule applies without exception.
Photoluminescent or Electrically-Powered — Which Do You Actually Need?
This is the question that trips up the most buyers, and the Fire Code answers it more precisely than most suppliers explain. Photoluminescent (glow-in-the-dark) marking along escape routes can be omitted only if your emergency lighting already meets specific redundancy conditions — either self-contained battery-pack luminaires compliant with SS 563, or a central battery system backed by a standby generator, combined with at least two emergency luminaires in every lobby and corridor (so no single point of failure leaves an area dark) and at least one at every staircase landing. If your site doesn’t already have that level of emergency lighting redundancy — and most smaller workplaces don’t — photoluminescent marking isn’t optional, it’s the fallback that makes your exit route findable during a power failure, which is precisely the moment an exit sign matters most.
Where photoluminescent marking is required, the specification is exact: minimum luminance of 800 mcd/m² measured one minute after the lights go out, still at least 80 mcd/m² at the ten-minute mark, and at least 1 mcd/m² six hours later. It must run along both edges of exit staircase treads and handrails, mark the doors of smoke-free lobbies, fire lift lobbies and exit staircases, and appear at intervals of no more than 10 metres along corridors carrying directional exit signage. Corridor wall-mounted photoluminescent signs have their own minimum size — 300mm × 150mm — and a height band of 150mm to 400mm above finished floor level, deliberately low, because smoke rises and clean air (and visibility) is at its best near the ground.
Mounting Height and Size: The Numbers Inspectors Check
Standard exit and directional signs mount at or below 2.5 metres above finished floor level. An engineered exception allows 2.5 to 3.5 metres, but only under specific conditions: where the building has smoke control, the top edge of the sign must sit below the designed smoke layer; where it doesn’t, there must be a minimum 500mm gap between the top of the sign and the ceiling or soffit. Hotels and boarding houses follow a separate low-level sign rule — bottom edge no less than 150mm and no more than 200mm above floor level, spaced at intervals of no more than 10 metres, and where a sign is mounted on a door, its closest edge must sit within 100mm of the door frame. None of these numbers are arbitrary — they’re calibrated to stay visible below a smoke layer and readable at the eye level of someone crawling toward an exit in poor visibility, which is the real-world condition an exit sign is designed for.
Choosing the Right Exit Sign for Your Site
In practice, most Singapore sites need a mix of three sign types rather than one. A standard exit sign marks the door itself. Directional variants — left-arrow and right-arrow versions of the same pictogram — guide workers along a corridor toward an exit that isn’t yet in view, placed at the 30-metre intervals the Fire Code sets. And luminous (photoluminescent) exit and fire-exit signs cover the low-light and power-failure scenario the Fire Code specifically requires wherever your emergency lighting doesn’t already meet the redundancy conditions above. The table below maps the common configurations to what’s actually needed.
| Situation | Sign type needed | Key requirement |
|---|---|---|
| Exit door, any floor | Standard exit sign | Mounted ≤2.5m above floor, above the door |
| Long corridor, exit not visible | Directional exit sign (left/right arrow) | No more than 30m to the nearest visible sign |
| Site without SS 563-compliant redundant emergency lighting | Luminous / photoluminescent exit sign | 800 mcd/m² at 1 min, 80 mcd/m² at 10 min, 1 mcd/m² at 6 hrs |
| Exit staircases and corridors carrying directional signage | Photoluminescent wall marking | Min. 300mm × 150mm, mounted 150–400mm above floor, ≤10m intervals |
| Hotel or boarding house corridor | Low-level exit sign | 150–200mm above floor, ≤10m intervals |
Frequently Asked Questions
Do I need photoluminescent exit signs if my building already has emergency lighting?
Only if that emergency lighting meets the Fire Code’s redundancy bar — SS 563-compliant self-contained battery packs, or a central battery system with standby generator backup, plus at least two emergency luminaires per lobby/corridor and one per staircase landing. Standard emergency lighting alone doesn’t remove the photoluminescent marking requirement.
How far apart do directional exit signs need to be?
No point along an exit route can be more than 30 metres from the nearest visible directional sign, per SCDF Fire Code Clause 8.1.
What’s the maximum height for mounting an exit sign?
2.5 metres above finished floor level is the standard limit. An engineered exception permits up to 3.5 metres, but only with either a documented smoke-control clearance or a minimum 500mm gap to the ceiling.
Is SS 508 the same as ISO 7010 for exit signs?
SS 508 is Singapore’s national standard and governs sign colour, shape and installation practice; ISO 7010 is the international pictogram library SS 508 draws its symbols from — the exit sign’s running-man pictogram is ISO 7010 symbol E001. A compliant Singapore exit sign satisfies both at once.
Can I use a generic imported exit sign instead of an SS 508-compliant one?
You can buy one, but it’s a compliance risk — imported signs frequently use different proportions, colour values, or pictogram styles that don’t match SS 508’s specification, and that’s exactly the kind of mismatch an inspector is trained to spot.
Exit signage is one of the least expensive line items in a workplace safety budget and one of the most heavily specified — the Fire Code and SS 508 between them leave very little to interpretation on placement, height, or performance. Getting it right is a matter of matching the sign to the situation, not guesswork. Browse our full range of SS 508-compliant exit signs, directional variants and photoluminescent options at safetysigns.sg, or see our Complete Business Owner’s Guide to Safety Signs in Singapore for the full picture across every sign category.
Author: safetysigns.sg Team
Date: 28 September 2026