Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Just a quick answer, first you need to have all the construction and the associated material objects in the same IDF file, then you can use jEPlus to apply the constructions to different surfaces. In your case, you shall have XPS and Rock wool materials, and change the construction object to reference the one you want to use.
I am not sure which example to point you to. The one included in the latest jEPlus+EA (v2.1.0) has different materials and constructions as parameters. In any case, it will be necessary to learn how E+ models work before you can use jEPlus effectively.
Yi
