Emissivities of common building materials
From Sparrow & Cess, with permission
All values at 100°F (40°C) unless otherwise noted
Surface |
Emissivity |
Brick, red & rough |
0.93 |
Concrete, rough |
0.94 |
Glass, smooth |
0.94 |
Ice, smooth |
0.97a |
Marble, white |
0.95 |
Paint, black gloss |
0.90 |
Paint, white |
0.89 to 0.97 |
Paint, various oils |
0.92 to 0.96 |
Paper, white |
0.95 |
Sandstone |
0.83 to 0.90b |
Snow |
0.82c |
Water, thickness > 0.1 mm |
0.96 |
Wood, oak, planed |
0.90 |
Wood, walnut, sanded |
0.83 |
Wood, spruce, sanded |
0.82 |
Wood, beech |
0.94 |
aat 32°F (0°C)
bat 100 to 250°F (100 to 500°C)
cat 10 to 20°F (-12 to -6°C)