not quite on topic: "attic" antenna mount question

[mhardy6647]

Heidy-ho, TV folks:

I am going to temporarily put up a UHF/VHF Yagi in the "attic" of my garage (I'll spare you the details). My simple quesiton is this: If it's "inside", should I still ground it as I would an outside mount antenna?

This seemed like a reasonable place to post this question, since the antenna will be used for a rectangular, solid state TV!

Thanks for your attention!