Select all faces parallel to ground Is there a way to select all faces in my mesh that have normals that point upwards, with a range of how much they need to be pointing upwards to be selected?I have a mesh of a house, and I want to add a solar panel material to all the faces that point upwards but the mesh just has too many faces to do it manually. It also has an inside that I do not want to be selected. I am not sure whether this  will involve scripting (I know absolutely nothing about scripting by the way)Preferably, my selection would look something like this:Thanks in advance for any advice anyone gives me.
I would use c for circle select and pick the top parts of the globes then either grow selection or use select similar.

Select similar which is Shift + g can be used to find faces with similar angles/direction which should be your best bet. Then just grow your selection using 
Ctrl + +
More ways to select can be found here https://docs.blender.org/manual/en/latest/modeling/curves/selecting.html