Proper treatment of materials is critical to your calculations. You are living in a "material" world!

How to Assign Materials in Revit
Option 1:  Use Object Styles Many elements in Revit have the material set as “By Category” by default.  This means that the element will have the material ...
Wed, 18 Jan, 2017 at 11:17 AM
How does ElumTools derive the reflectance from the Revit material?
ElumTools derives the reflectance of each element based on its Material’s Graphics Shading Color property. This can be easily overridden in ElumTools Materi...
Thu, 12 Jan, 2017 at 4:32 PM
Why does ElumTools not use the reflectance from the Appearance tab?
The current Revit API does not allow us access to this information. Even if it did, these properties do not necessarily represent the true physical properti...
Wed, 18 Jan, 2017 at 4:15 PM
Tips for Mapping Materials with Linked Models
You can determine the materials applied to a given element by looking at the Type Parameters (use Tab Select to select elements in linked models).  See belo...
Fri, 24 Feb, 2017 at 11:34 AM
Single vs. Double Sided Surfaces
In the Material Mapping dialog you have the choice to set the Surface Type to either "Opaque, 1-Sided" or "Opaque 2-sided".  Users famil...
Fri, 13 Oct, 2017 at 5:07 PM
How important are surface reflectances?
See the ElumTools blog for additional info! The obvious answer to this question is “it depends on the application,” and every lighting professional can ...
Mon, 23 Jul, 2018 at 2:45 PM