I am working on various wall assemblies to represent how different products are used. I have created wall panels, studs, etc. except I do not see a good way to create insulation. I have thought about just creating a block and assigning it material properties of insulation based on manufactures specifications.

My real question is how do I represent the insulation in an assembly drawing, to show the wavy lines that are classic in wall assembly drawings from manufactures. An example is attached that I downloaded from a manufacture of drywall. I would like to create an assembly similar to this.