This roof texture was an experiment for creating a procedural roof tile effect. You can find the material and reference its node network in the Cubicity Asset Library. The material is called “cubicity_roof-tiles_A“. Here’s a screenshot of the roof tiles texture:

I didn’t teach it in the course because I don’t understand the math and it’s a LOT of nodes to cover without actually knowing why it all works. I referenced a couple tutorials to achieve the effect, maybe this was one of them (hard to remember):
I also laid out UVs for the roof sides so they all have the proper orientation of roof tiles cascading from top edge to bottom edge. Hope this helps!