Hi, I would like to know how can I model an external wall that has different layers and materials. Normally I've seen homogeneous walls.
Closed for the following reason "duplicate question" by nernevera 2017-12-12 03:22:26 -0500
Our documentation on constructions and materials. Making your own constructions is easy when each material layer is a homogeneous material, but when a specific layer is a composite such as framing and insulation, you need to find or develop 'effective' values for that composite layer.
California Title 24 2016 Building Energy Code Reference Appendices has effective R-values for several different kinds of composite constructions. Particularly with framing, the method of securing insulation, framing, and associated thermal bridging means effective R-values are a lot lower than an area-weighted average.
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