Make material always culled.

Will it truly cull the material, or will it try to render a transparent mesh... Basically, anything with the material should in theory behave as if it had its mesh renderer disabled, except that only parts with that material are disabled, not the whole thing.

@RLin I didn't completely understand that you wanted it to just not render.

I added some new info in my answer. The game object itself will exist in space, but it will not render.

Did it work?

I guess that was unclear. I'll explain the whole thing. I create sketchup models and import them. The trouble is, sketchup always exports back faces even if export two-sided faces is not checked. To fix this, I made all faces I wanted to cull a single material. Because it is the same mesh, disabling the mesh renderer will disable parts that are still supposed to be rendered.

In that case I think you're out of luck. $$anonymous$$aybe you can import it into another program like 3ds max or maya (there are free copies provided by autodesk) and modify the materials from there, then export from there.