I'm not trying to scare you, just pointing out something I saw on
Holmes on Homes...

The family had a room over a garage that was always cold. Insulating
the underside of the garage ceiling wouldn't have helped because of the
way the builder framed and insulated the house. There were open spaces
where the garage met the house that allowed air to travel up under the
floor of the room and along the spaces where the ductwork ran. This let
lots of cold air into the room. They had to open up the garage walls
and ceilings and insulate all of the open cavities to stop the air
flow.

Also keep in mind that exposed insulation in a garage might be a
serious fire/toxic fume hazard. I'd guess it wouldn't meet code, if
that type of thing concerns you.

On Jan 24, 4:01 pm, "Freckles" wrote:
My bedroom is over my garage. The bedroom stays cold in the winter and hot
in the summer.

I want to have a layer of solid insulation put up on the ceiling in the
garage.

Has anyone done this and if so did it help very much?
What RF factor insulation would you recommend?