Surface reflectance values

prashhh · April 22, 2026, 6:48am

From where can i access the interior surface reflectance values that are used as default when carrying out simulation?

chris · April 22, 2026, 8:13pm

You can always use the HB Color Face Attributes component to see the reflectances of the individual surfaces in your model but you’ll find the default Radiance modifiers that are used for different geometry types here in the honeybee-standards repository:

github.com

ladybug-tools/honeybee-standards/blob/master/honeybee_standards/modifiers/default.mat

#   =========  DEFAULT HONEYBEE MODIFIERS =========
# These modifiers are loaded into the honeybee_radiance library as defaults.
# They are not included in the standards package but are provided here as a
# sample for how user-specific modifiers should be added to honeybee_standards


void plastic generic_floor_0.20
0
0
5 0.2 0.2 0.2 0.0 0.0

void plastic generic_wall_0.50
0
0
5 0.5 0.5 0.5 0.0 0.0

void plastic generic_ceiling_0.80
0
0
5 0.8 0.8 0.8 0.0 0.0

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