Insulated Garage Doors are composed of a layer of closed-cell polyurethane foam in between the steel panels giving you an R-Value of R-9 that won’t conduct heat or allow heat to enter the way standard non-insulated garage doors do. Insulated Garage Doors also are stronger and more durable than your standard garage doors, and won’t dent the way others do when footballs or soccer balls hit them.
The price difference between your non-insulated garage doors and insulated garage doors isn’t much, but the energy savings can be significant.