Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
If these are simply eaves that overhang the roof then your approach is correct and there would be conduction between those surfaces and adjacent ones (as well as convection with the environment).
However, if these surfaces are somehow attached to the facade and are primarily for shading then @Julien Marrec's approach is correct. Another thing to consider is that since your model looks like a small residential building its energy use will be largely dominated by the envelope and leaving the surfaces as eaves instead of shades could possibly increase the envelope load.
| | 2 | No.2 Revision |
I'll offer the opposite answer. If these are simply eaves that overhang the roof then your approach is correct and there would be conduction between those surfaces and adjacent ones (as well as convection with the environment).
However, if these surfaces are somehow attached to the facade and are primarily for shading then @Julien Marrec's approach is correct. Another thing to consider is that since your model looks like a small residential building its energy use will be largely dominated by the envelope and leaving the surfaces as eaves instead of shades could possibly increase the envelope load.
