Approximate Reflectance Values of Typical Building Finishes

Date
July 25, 2018
Categories
Knowledge

The effect a lighting system creates in an interior is strongly influenced by the properties of the room surfaces. Surface Reflectance greatly assists with light levels. Areas with low reflectance levels need more light to achieve the same lux levels. 

Indirect Light works very well in areas with high reflectance surfaces. High reflectance areas soften shadows. In contrast, low reflectance surface accentuate shadows. 

At Decrolux, we always try to understand surfaces in our projects, to more accurately calculate lighting levels. 

SurfaceReflectanceMaterial
Ceilings0.8White Paint on Plain Plasterboard
0.7White Paint on Acoustic Tile
0.6White Paint on Non-fines Concrete
Wall0.8White Paint on Plasterboard; Tiles
0.4White Fibre Cement; Brick; Concrete, Light Grey, Smooth
0.3Brick, Common
0.25Concrete, light grey; Cement, rough; Brick, red: Timber Panelling, light oak, mahogany
0.2Timber Panelling; Dark
0.15Brick; Dark
0.05Black Chalkboard
Floors & Furniture0.8Paper, White
0.45PVC Tiles; Cream, Carpet; Light Grey
0.35Timber; Light
0.25Timber; Medium, PVC Tiles; Brown, marbled, Carpet; Green
0.2Timber; Dark
0.1Tiles; Red, Carpet; Dark, 

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