Design · 27 August 2026 · 2 min read
Facade lighting without light pollution
A well-lit facade gives a building presence after dark. Done carelessly, it wastes energy and spills light into the sky. The two don't have to go together.
Night-time identity matters for hotels, towers, retail and landmark buildings. But light that misses the facade ends up in the sky, in neighbours' windows and in the eyes of passers-by — and every stray lumen is energy paid for and wasted.
Principles for responsible outdoor lighting
DarkSky International and the Illuminating Engineering Society summarise good practice in five principles: light should be useful, targeted, no brighter than necessary, controlled, and warm in colour.
- Useful — every light should have a clear purpose.
- Targeted — aim and shield fittings so light lands only on the facade.
- Low level — brightness relative to the surroundings matters more than raw output.
- Controlled — dim or switch off after midnight with timers and astronomical clocks.
- Warm-coloured — warmer sources, typically 3000K or below, scatter less in the night sky.
Graze, wash or accent
Grazing light from close to the surface reveals texture in stone and fins; washing gives an even glow to smooth planes; accents pick out entrances and crowns. Choosing the technique per surface keeps the facade legible and the light where it belongs.
Planning a project? Talk to us about lighting design, controls or product supply.
