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Wall

Defining space through facade lighting at night

Wall and facade lighting at night extends one's perception and defines spatial limits. Vertical illumination is significant in the visual surroundings for identifying areas in terms of their form, regardless of whether they are facades or walls covered with climbing plants. The objective may be to obtain a uniform wallwashing comparable to that in the indoor area, or to gently illuminate a building against the nocturnal environment. The arrangement of the luminaires is dependent on the desired uniformity and illuminance. In the outdoor area at night, a low brightness is often sufficient for making objects visible and for making contrasts.

Wall, 3m

Wall, 3m Wall, 3m Wall, 3m Wall, 3m
Wall, 3m Wall, 3m Wall, 3m
Wall, 3m Wall, 3m Wall, 3m

Wallwashers are characterised by the even progression of brightness along the wall.
Vertical illumination emphasises the wall faces in terms of their physical make-up. The room is made to look bigger by brightening its walls and ceiling etc. Point light sources make the wall surface much more vivid. Wallwashing only produces an even brightness on matt surfaces.

Lighting criteria for walls
- uniformity of the lighting
- in the outdoor area, the illuminance levels on the wall should not be excessively high.

Wall, 3m Wall, 3m

The offset from the wall should be at least one third of the wall height.
Alternatively, the light's angle of incident should be 20° to the vertical.
An optimum evenness is obtained when the luminaire spacing is the same as the offset from the wall, or at least does not exceed it by more than 1.5 times.
Wallwashers only develop their optimal evenness as of a minimum number of three luminaires.

Washlighting illumination for vertical surfaces of:
- wall lighting
- facades
- entrance areas

Preferred luminaire groups
- wallwashers

Wall, 5m

Wall, 5m Wall, 5m Wall, 5m
Wall, 5m Wall, 5m
Wall, 5m Wall, 5m

Given the same lighting, as the wall height increases the brightness of the wall decreases. Wallwashers are characterised by the even progression of brightness along the wall. This can be achieved even with a relatively short distance between the luminaire and wall.

Vertical illumination emphasises the wall faces in terms of their physical make-up. The room is made to look bigger by brightening its walls and ceiling etc. Directed light makes the wall surface much more vivid. Vertical illumination emphasises the wall faces in terms of their physical make-up.
Given the same lighting, as the wall height increases the brightness of the wall decreases. Wallwashers are characterised by the even progression of brightness along the wall. This can be achieved even with a relatively short distance between the luminaire and wall.

Lighting criteria for high walls
- uniformity of the lighting
- in the outdoor area, the illuminance levels on the wall should not be excessively high
As the wall height increases the distance of the luminaire to the wall must be increased.

Wall, 5m Wall, 5m

Whereas for normal wall heights the luminaire spacing is the same as the offset from the wall, for higher walls it must be reduced to compensate for the otherwise sinking illuminance. The offset from the wall is given where a 20° line projected down from the top of the wall meets the ground.

Washlighting illumination for vertical surfaces of:
- wall lighting
- facades
- entrance areas

Preferred luminaire groups
- wallwashers
- lens wallwashers

Wall with texture

Wall with texture Wall with texture Wall with texture Wall with texture Wall with texture
Wall with texture Wall with texture Wall with texture Wall with texture
Wall with texture Wall with texture Wall with texture Wall with texture

Point-form light sources at a short offset from the wall produce their own light pattern that, admittedly, does accentuate the texture, but does not permit an even wallwashing.
Grazing light wallwashers at a short offset from the wall most vividly enhance the surface texture, thereby accentuating the materials used.

The smaller the offset from the wall, the clearer the surface texture is enhanced. When using grazing light, the evenness of the wall illumination is greatly reduced.

Preferred luminaire groups
- downlights, narrow-beamed
- wallwasher
- recessed floor luminaires (uplights, lens wallwashers, directional luminaires)

Projects on this guide topic