Right now, I am making a building in Blender that can be tiled but I am having trouble unwrapping the UVs for the model. I have used Blender for quite awhile now but I am still not entirely familiar with it, especially in unwrapping UVs. While I do think I have kind of wrapped my head around it, there are some things that I still do not understand.
I have attached a photo as well as the .blend file for the model. MelbourneBrickBuilding.blend
I need to know how I can go about unwrapping the top of the model that has been highlighted. If you look closely at some of the faces, particularly the one at the very bottom in the middle, the grid has sort of been warped across one corner to the other. Why is this happening? I also cannot figure out why some of the other faces appear warped and stretched as well. I just cannot seem to be able to mark the right seams in order to fix it.
Can somebody please help? Thanks!