Albedo and Emissivity for selected surfaces

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Material Albedo Emissivity
Concrete 0.3 0.94
Red Brick 0.3 0.90
Tar Paper 0.05 0.93
White Plaster 0.93 0.91
Bright Galvanized Iron 0.35 0.13
Bright Aluminum Foil 0.85 0.04
White Pigment 0.85 0.96
White Single-Ply Roofing* 0.78 0.90
Black EPDM Roofing* 0.04 0.88
Gray Pigment 0.03 0.87
Green Pigment 0.73 0.95
White Paint on Aluminum 0.80 0.91
Black Paint on Aluminum 0.04 0.88
Aluminum Paint 0.80 0.27 – 0.67
Gravel 0.72 0.28

 

Data Source: "Implementation of solar-reflective surfaces; materials and utility programs." Lawrence Berkeley Laboratory, June 1992, for all materials except the white single-ply membrane and black EPDM membrane.

* White Stevens EP brand of TPO and a generic black EPDM membrane were tested at DSET Laboratory, Phoenix, Arizona, May 1997, in accordance with ASTM E 903 reflectivity test protocols and ASTM E 408 emissivity test protocols. These values are not part of the Lawrence Berkeley Laboratory data.