Aside from the benefit of moderating the temperature in surrounding rooms, (especially above the garage), insulation also quiets the operation sound of the door and increases durability. If you have a noninsulated steel door, there are insulation panels you can install but most models come with insulation in them. It’s usually a better investment to purchase a door with insulation than to go back and add it.

John Nale, Atlanta Garage Door Expert - CatMax Photography

John Nale

Overhead Door Company of Atlanta™
Years in Business: 83
Associations: GAHBA, IDA