Can't get black roof to look black

I have a black roof that looks very gray and gray siding that looks very black. It’s something about how the ambience is rendered reflecting, i think?? but even when i make a new pure black texture it shows up like this: which is kind of a medium brown. I’ve played with settings, local illumination, etc. TM seems so awesome and the interface and plugins are great but … what am i missing?

You can play around with the Roughness and Metallic settings. It’s a bit counter intuitive, but If you turn both up it should go vanta black.