Metal Garage Door Types – What is the Best for You?

Shopping for metal garage doors? The type of metal garage door that is best for your home will vary based on several factors. GDI Garage Door has you covered, offering a wide selection of galvanized steel garage doors to meet your requirements, budget and preferences.

Tips for Choosing Metal Garage Doors for Your Home

Our metal garage door options, including steel overlay carriage garage doors, come in thicknesses ranging from 1-2 inches and are available with or without insulation. What’s the difference? Their construction impacts performance:

  • 1-layer doors: Our 1-layer doors feature a single sheet of molded steel, typically around 2 inches thick for structural stability. These doors are a good choice for unheated garages or sheds where noise and climate are not a concern.
  • 2-layer doors: Our 2-layer doors include a panel of polystyrene (Styrofoam) insulation covered by a rigid sheet of styrene for fire resistance.
  • 3-layer doors: Our 3-layer doors feature two sheets of 1 to 2-inch stainless steel with polystyrene or polyurethane insulation sandwiched between them.  

Choosing Between Polystyrene and Polyurethane Insulation

Polyurethane foam insulation is a superior choice if you’d like to reduce noise and heat infiltration. It’s also better for homes exposed to strong winds, and for those frequently leaving the garage door open.


Inch-for-inch, polyurethane offers twice the performance of polystyrene. It adheres to the walls of the door, swelling to fill even tiny spaces. Forming dense, closed cells it will improve the thermal resistance of your garage door. The rigid composition of polyurethane insulation also imparts added tensile strength, providing twice the resistance of a garage door of similar thickness insulated with polystyrene. What type of metal garage door is best for your Livermore, Pleasanton, Walnut Creek, Vallejo, Richmond, Moraga, Lafayette, or Berkeley home? Contact the professionals at GDI Garage Doors to learn more.

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