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Sizes and Thickness of Residential Garage Doors

The size of garage doors plays a vital role in garage replacement or installation. While the standard-sized single garage doors can satisfy most homeowners, the spacious double doors give homeowners additional options of keeping large SUVs, boats, trucks, RVs, and motorcycles. There are multiple varieties in standard garage door sizes for homes depending upon the space, the design, and most importantly, the technology. The most common garage door types are below.

Varieties of Residential Garage Doors:

  1. Single Garage Doors: Usually, a garage space and layout that accommodates a single car requires a smaller door. However, there is not a standard size for single-car garage doors. While the height should be at least 7 feet, the widths may differ in size. Single garage doors are available in 8 feet height as well. The three most common dimensions are:
  • 10 feet (width) x 7 feet (height): With the biggest dimension, this one can accommodate a Toyota Prius or an SUV.
  • 9 feet (width) x 7 feet (height): One inch bigger in width than 8-inch garage doors, this one is suitable for bigger cars.
  • 8 feet (width) x 7 feet (height): As the most common single-car garage door, it can accommodate many vehicles. However, this one is not suitable for larger SUVs and trucks.
  1. Double Garage Doors: A double garage door is also common among residential garage doors. It can provide extra space to get in and get out of the car. It also offers sufficient space for oversized vehicles. For the owners of large cars, expanding the size of each door to 8-9 feet can be the best choice.

The sizes of a double garage door may vary depending upon the garage layout and the owner’s requirements. Most homeowners look for a 22 feet garage door that suffices two single doors. An 18-inch double door is also available, which is suitable for smaller garages.

  1. Triple Garage Doors: This one is not a very common choice among homeowners in the US. Most homeowners prefer a single door and a double door even if they have a very large vehicle to accommodate. For three-car garages, triple garage doors can be a more practical option. Homeowners who prefer seamless driving through a larger opening of one big door prefer triple garage doors.

There are multiple advantages of triple garage doors. Firstly, these doors look aesthetically pleasing. Secondly, these doors require less horsepower to function. Thirdly, the triple garage doors are more cost-effective than the other types.

  1. Custom Garage Doors: One can opt for a custom garage door if the garage size is unusual or large vehicles such as certain kinds of trucks, recreational vehicles, or vehicles with tall roof racks need shelter. Some custom garage doors come with 10 feet height or more, depending upon the garage layout and the owner’s requirements. Custom garage doors do not follow the standard garage door sizes or dimensions.

The Thickness of Residential Garage Doors:

One needs to choose the garage thickness according to specific needs. One can determine garage door thickness based on two factors such as the cost and insulation. Also, the material one selects can help the person in determining its thickness.

The steel garage doors are the most cost-effective choices that come with as little as 1/8 inches. These garage doors provide the lowest insulation. The ones that come with better insulation on the inside have 1/4 to 1/2-inches thickness. The steel doors with the best insulation come with 1 to 1 1/2-inches thick layers of foam.


According to the National Association of Home Builders, double car garages are the most popular among homeowners in the US. The majority of houses in Great Plains and Western states had triple car garages. The 7 feet high doors are considered standard garage door sizes. It can accommodate a standard full-size SUV. Multiple factors such as a home’s architecture and its garage size determine the size, material, and thickness of doors. If there is not enough space above the door, the owner may need to heighten the roof of the garage to accommodate a standard-sized garage door.

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