Thank you for the suggestions. He's very familiar with the construction process, including the insulation. It's not a bedroom, just a spare room so no egress is needed. Thank you for the concern, though.
My father is attempting to add another room in our basement back home, roughly 4 hours away from me (wood framing only). He wants to heat this new room, obviously but isn't sure of the best way to do it. There is a heat duct that runs right outside one of the interior separation walls that he's...