Room Above Garage Cold

Would it help keep it cooler if i put a white reflective foam core insulation on the ceiling.
Room above garage cold. The main bedroom in my house is above the garage. It s really hot in the room all summer and it feels that way eight months out of the year. Hi thank you so much for the replies. Here s what causes the problem.
Wall to wall carpeting is installed with a thick pad underneath which is another layer between feet and the cold garage. A detached garage eliminates the risk of dangerous fumes coming into the house so you don t have to worry about making it super sealed. Insulation levels for garage doors are measured by an r value or less commonly a u value. You might use this room for anything from a bedroom to an office bathroom or storage space.
Does your home have a bonus room above the garage. Use a styrofoam plug and plug each hole after you fill it. To allow for access partially close the garage door as you get to those holes above the garage door tracks. How to finish the job.
If the room has wood laminate or another hard surface floor a thick area. The higher the r value the better the insulation. Wait is there even a solution to this. Why the room above your garage is always cold or hot it s november in atlanta and temperatures are dropping.
All you have to worry about is that it s the right. Having a well insulating garage door is helpful in this regard. Another approach you can you take is to make your garage warmer and thereby eliminate the problem of cold air passing through the ceiling. I was thinking of gluing and screwing in styrofoam insulation 1 inch thick on the ceiling of the garage.
I ve been away from home so apologies for the late reply. I have this product on my garage door already and it helped the temperature in the garage. The other rooms in the house not above this garage are fine.