If you’re planning a new garage or replacing an old door, you likely need to know how wide is a 2 car garage door. The required opening for a 2-car garage door is a precise measurement that ensures two vehicles can enter and exit without issue. Getting this width right is crucial for functionality, safety, and even your home’s curb appeal.
This guide will walk you through the standard sizes, important factors that influence your choice, and the steps to measure correctly. We’ll also cover related considerations like height, installation, and styles so you can make a fully informed decision.
How Wide Is A 2 Car Garage Door
The standard width for a 2-car garage door is 16 feet. This is the most common size you will find in residential homes across the country. It is designed to comfortably accommodate two average-sized vehicles, such as sedans or midsize SUVs, parked side-by-side.
However, 16 feet is not the only option. Many modern homes and vehicle owners opt for wider doors to provide more clearance. An 18-foot wide garage door is a popular upgrade that offers extra space for easier entry and exit, especially with larger vehicles or when storing items along the walls.
Here are the typical width options you will encounter:
- 16 Feet: The standard and most economical choice.
- 18 Feet: A common upgrade for better clearance.
- 20 Feet: Used for oversized vehicles or three-car garages with a single door.
It’s essential to remember that the door width refers to the size of the door panel itself. The rough opening in your garage frame must be slightly larger to accommodate the door and its track system.
Why Standard Width Matters
Choosing a standard width like 16 or 18 feet has significant advantages. First, these sizes are readily available from manufacturers, leading to shorter lead times and lower costs compared to custom sizes. Replacement parts, like springs and rollers, are also easier to source for standard doors.
Second, a properly sized door maintains the structural integrity of your garage. The header—the beam above the door—is engineered to support a specific load range. Installing a door wider than your structure is designed for can compromise safety.
Finally, resale value is a consideration. A standard-sized garage door is expected by most homebuyers. An unusually narrow or wide door could be seen as a drawback, potentially affecting your home’s marketability in the future.
Measuring Your Existing Garage Opening
Before you order a new door, accurate measurement is non-negotiable. You need to measure the rough opening, which is the clear space within the framed wall where the door will be installed.
Follow these steps to measure for width:
- Gather a metal tape measure, a ladder, and a notepad.
- Measure the opening horizontally from the inside of one side jamb to the inside of the opposite jamb. Take this measurement at the top, middle, and bottom of the opening.
- Use the smallest of the three width measurements as your guiding figure. This accounts for any unevenness in the frame.
Do not measure the existing door itself, as it may not reflect the true rough opening size, especially if it’s an older installation. Also, check for any obstructions like light fixtures, pipes, or shelving that might interfere with the new door’s path.
Accounting For The Track And Hardware
The rough opening width must be about 3 to 3.5 inches wider than the door panel you order. This extra space is needed for the vertical tracks that guide the door, which are mounted on the inside of the side jambs. Your dealer will use your rough opening measurements to specify the correct door size.
For example, if you have a rough opening width of 18 feet and 3 inches (219 inches), a standard 18-foot wide door (216 inches) would be the correct fit. This leaves the necessary clearance for the hardware on each side.
Garage Door Height Considerations
Width is critical, but height is equally important. The standard height for a residential garage door is 7 feet. Yet, with the popularity of taller trucks and SUVs, many new constructions install doors that are 8 feet high.
If you own a full-size pickup truck, van, or SUV with a roof rack, the extra foot of height can prevent dings and scratches. It also provides more clearance if you plan to use a roof-mounted storage box or transport tall items inside the garage.
Common door size combinations include:
- 16′ wide x 7′ high (Standard)
- 18′ wide x 7′ high (Wider Standard)
- 16′ wide x 8′ high (Tall Standard)
- 18′ wide x 8′ high (Wide and Tall)
Always measure your rough opening height from the floor to the bottom of the header at multiple points, just like you did for width. Remember to consider the space needed for the horizontal track above the door when its open.
Factors Influencing Your Ideal Door Width
While standards provide a great starting point, your specific needs should dictate the final choice. A door that’s too narrow can lead to constant frustration and vehicle damage.
Vehicle Sizes And Types
The average midsize sedan is about 6 feet wide. Parking two side-by-side in a 16-foot opening leaves only 2 feet of total clearance between them and the walls—that’s just one foot on each side. This can feel very tight.
Consider these typical vehicle widths:
- Compact Car: ~5.8 to 6.2 feet wide
- Full-Size Sedan: ~6.2 to 6.5 feet wide
- Midsize SUV: ~6.3 to 6.7 feet wide
- Full-Size Truck/SUV: ~6.7 to 8.0 feet wide (including mirrors)
If you own larger vehicles, an 18-foot door is a wise investment. It provides an extra foot of space on each side, making parking much less stressful. For those with one very large vehicle and a smaller one, the extra width allows you to offset your parking for even more room on the truck’s side.
Garage Functionality And Storage
Modern garages are rarely used just for cars. They often double as workshops, gyms, or storage areas. If you plan to have workbenches, shelving units, bicycles, or lawn equipment along the walls, every inch of width becomes more valuable.
A wider door allows you to park closer to one side, creating a dedicated workspace on the other without compromising vehicle access. It also reduces the risk of hitting stored items when you pull in, especially on days when you might be slightly off-center.
Local Building Codes And HOA Rules
You must check your local building codes and any Homeowners Association (HOA) regulations before finalizing a door size. Some municipalities have specific requirements for garage door dimensions based on fire codes or zoning laws.
HOAs often have strict guidelines on the style and sometimes the size of garage doors to maintain a uniform look in the neighborhood. They may require you to submit plans for approval before installation. It’s better to know these rules upfront than to face a costly correction later.
The Installation Process And Professional Help
Installing a garage door is a complex task involving heavy components, high-tension springs, and precise alignment. While some experienced DIYers tackle it, professional installation is strongly recommended for safety and warranty purposes.
What Professional Installation Includes
A qualified installer will handle the entire process, from taking final measurements to adjusting the door for smooth operation. They ensure the door is balanced correctly, which is vital for the longevity of the opener and the door itself.
Key steps a pro will manage:
- Removal and disposal of the old door and hardware.
- Verification of the rough opening and structural integrity.
- Assembly and installation of the new tracks, springs, and door sections.
- Mounting and programming of the automatic opener.
- Testing the safety reversal features and balance.
A professional installation typically comes with a warranty on both labor and parts, giving you peace of mind. The cost is worth it to avoid the risk of injury or improper function.
Choosing The Right Door Material And Style
Once you’ve settled on the width and height, you’ll need to choose the door’s material and design. This affects price, maintenance, and insulation.
The main material options are:
- Steel: Durable, low-maintenance, and affordable. Available in various insulation levels.
- Wood: Offers a classic, high-end look but requires regular painting or staining to protect against the elements.
- Aluminum/Glass: Modern and contemporary, often used for full-view doors. Can be less insulated.
- Composite: Mimics the look of wood with greater durability and less maintenance.
Insulation is another key choice. An insulated door (with a polyurethane or polystyrene core) helps regulate garage temperature, reduces noise, and improves energy efficiency if your garage is attached to your home. It also makes the door more rigid and durable.
Common Mistakes To Avoid
When planning for a new 2-car garage door, a few common errors can lead to headaches and extra expense.
Assuming Your Opening Is Standard
Never assume your existing opening is a perfect 16 or 18 feet. Older homes, in particular, can have non-standard sizes. Always perform the detailed measurements as described earlier. Ordering a door based on an assumption can result in a costly return or custom fabrication fees.
Forgetting About Interior Clearance
Measure the interior space where the door will travel when open. Ensure there is enough headroom and side room for the tracks and the fully raised door panels. Also, check that the garage ceiling can accommodate the horizontal track, especially if you have low-hanging storage or a low ceiling.
Another interior consideration is the door opener. If you’re switching from a swing-out to a roll-up door, or changing the track radius to a “high-lift” track for more vertical space, the opener location and rail length may need to change too.
Neglecting The Driveway Approach
Your driveway’s width and alignment with the garage greatly affect how easy it is to use the door. A narrow or sharply angled driveway can make lining up for a straight entry difficult, even with a wide door. Consider if you need to widen the driveway apron or improve its layout to maximize the benefit of your new, properly sized door.
FAQ Section
Here are answers to some frequently asked questions about 2-car garage door dimensions.
Is A 16 Foot Garage Door Big Enough For 2 Cars?
Yes, a 16-foot door is the standard minimum width designed for two cars. It provides enough space for two average-sized sedans or compact SUVs. However, it offers minimal clearance on the sides, so careful parking is required. For more comfort and to accommodate larger modern vehicles, an 18-foot door is often recommended.
What Is The Rough Opening For An 18 Foot Garage Door?
The rough opening for an 18-foot wide garage door should typically be 18 feet 3 inches to 18 feet 4 inches (219 to 220 inches). This allows for the installation of the vertical tracks and hardware on either side of the door panel. Always confirm exact requirements with your door manufacturer or installer, as specifications can vary slightly.
Can You Put A 16 Foot Door In An 18 Foot Opening?
Technically, you can install a smaller door in a larger opening, but it is not advisable. It requires extensive framing work to reduce the rough opening size, which adds significant cost and labor. It also creates an awkward visual appearance with oversized trim or siding gaps. It is more practical to install a door that matches your existing rough opening.
How Much Wider Is An 18 Foot Door Compared To A 16 Foot?
An 18-foot garage door is exactly 2 feet wider than a 16-foot door. This provides an additional 12 inches of clearance on each side of your vehicles. This seemingly small increase makes a substantial difference in daily use, making entry and exit much easier and reducing the risk of scraping doors or mirrors.
Does Garage Door Width Include The Frame?
No, the stated width of a garage door refers to the width of the door panel itself. It does not include the side frames (jambs), tracks, or any exterior trim. The total unit width, including these elements, will be greater. This is why the rough opening in your wall must be wider than the door panel dimension you order.
Choosing the correct width for your 2-car garage door is a fundamental decision that impacts your home’s functionality and value. By understanding the standard sizes, accurately measuring your space, and considering your specific vehicle and storage needs, you can select a door that provides convenience and safety for years to come. Remember to consult with professionals and check local regulations to ensure a smooth installation process. With the right information, you can confidently find the perfect fit for your garage.