On 2006-09-17, patrick wrote:

So....what about insulating the floor joists for a room that has a
full basement (exposed) ceiling under it. This room is above the
room that houses the furnace for the house.

Basically you want to have a thermal envelope around your living
space. If the basement is living space, don't insulate the joists
between it and the first floor. If it is not living space, then
insulating between the joists will help.

Cheers, Wayne