Light impact and luminaire arrangements
Light for cantilevered roofs

Indirect lighting with ceiling washlights
Eye-catching, cantilevered roof constructions are a typical feature of prestigious buildings. The lighting of such roof structures achieves an effect in urban environments that attracts attention from afar. The light directed from below onto the roof surface emphasises the architectural dimensions.
Rule of thumb for ceiling washlight arrangements
Ceiling washlights with wide light distribution are suitable for illuminating cantilevered roofs. For uniform roof floodlighting, the distance (a) between the roof and ceiling washlights should be greater than 0.8m. The luminaire spacing (d) of wide distribution ceiling washlights is calculated with 4 times the distance (a) to the ceiling (roof). a > 0.8m d = 4 x a

