Convert Two Single Garage Doors to One Double: Easy Guide

Joan Aug 08, 2026

Are you tired of struggling to fit into two narrow garage doors when you could have the ease and space of one wider one? Converting two single garage doors to one double can make your life easier and even increase your home's value. Let's explore the steps involved and the benefits of making this change.

Double garage door conversion with SWS SeceuroGlide LT insulated roller garage door in black
Double garage door conversion with SWS SeceuroGlide LT insulated roller garage door in black

Before we dive into the process, let's briefly discuss whether this project is worth your time and resources. If you're planning to sell your home in the near future, a double garage door can be an attractive feature for potential buyers. Additionally, if you drive larger vehicles or need to store larger items, the extra space will be invaluable.

DIY Garage Door Replacement
DIY Garage Door Replacement

Planning Your Conversion

Once you've decided to convert your single garage doors to a double, the first step is to plan the project. This includes measuring your space, deciding on the type of door you want (sectional, roll-up, or sliding), and choosing a material (wood, steel, or composite).

18+ Stylish Garage Door Conversion Ideas
18+ Stylish Garage Door Conversion Ideas

You also need to consider the aesthetic of your new door. Make sure it complements your home's architecture and color scheme. Many homeowners opt for a door that mimics the style of their home's other doors or windows.

Measure Your Space

Double-Door Garage Conversion - Extreme How To
Double-Door Garage Conversion - Extreme How To

Accurate measurements are crucial for a successful conversion. You'll need to know the height, width, and depth of your garage. Also, measure the width of the door opening, the header (the area above the door opening), and the sides of the garage to ensure everything fits correctly.

Don't forget to account for any additional space needed for your garage door opener. Different types of openers require different amounts of headroom and backroom (the space behind the door).

Choose Your Door Type and Material

Double Garage Door Conversion | Access Garage Doors
Double Garage Door Conversion | Access Garage Doors

Garage doors come in three main types: sectional, roll-up, and sliding. Sectional doors are the most common and are well-suited for most garages. Roll-up doors are great for garages with high ceilings, while sliding doors are ideal for garages with limited headroom.

As for material, wood is durable and has a classic look, but it requires more maintenance. Steel is low maintenance and comes in various styles, while composite materials offer the beauty of wood with the low maintenance of steel.

Installing Your New Double Garage Door

How To Replace Your Garage Door With French Doors
How To Replace Your Garage Door With French Doors

After you've planned your project and purchased the necessary materials, it's time to install your new garage door. If you're not comfortable tackling this task yourself, consider hiring a professional. If you're a DIY enthusiast, follow these steps:

1. Remove the existing doors and their hardware. Use a level to ensure the opening is square. 2. Install the new door's header and sill. These pieces provide support for the door and keep it aligned with the garage opening. 3. Attach the tracking system to the walls and ceiling of the garage. This system should be level and plumb to ensure the door operates smoothly. 4. Install the door panels and hang the opener. Make sure to align the panels carefully to ensure they fit correctly. 5. Test your new door to ensure it opens and closes smoothly.

a garage with a door and window that is boarded up
a garage with a door and window that is boarded up
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30 Unique Garage Door Conversion Ideas for New Rooms - We Love Home Blog
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Garage Glow Up

Consider Insulation

If you're going to the trouble of installing a new garage door, you might want to consider adding insulation. This can help regulate the temperature in your garage and even improve the energy efficiency of your home. Some garage doors come with insulation pre-installed, while others can be fitted with aftermarket insulation kits.

There are several types of insulation to choose from, including foam, fiberglass, and reflective insulation. The best type for your home will depend on your climate and your specific needs. Talk to your garage door supplier or a local professional for advice.

Don't Forget Safety Features

Safety should always be a priority when installing a new garage door. Look for a door with safety features such as pinch-resistant panels, a reverse mechanism that stops the door if it encounters an obstacle, and a safety release mechanism that allows you to manually open the door in case of a power outage.

Also, consider installing a garage door opener with rolling code technology. This feature changes the access code each time you use your remote, so it's harder for thieves to intercept the signal.

Operating a vehicle is easier, and storing larger items is more manageable with a double garage door. Not to mention, this upgrade can increase your home's value and make it more appealing to potential buyers. If you're ready to make this change, start by planning your project carefully. Measure your space, choose a door type and material that suits your needs, and don't forget to consider insulation and safety features. Whether you tackle this project yourself or hire a professional, you'll soon be enjoying the convenience and space that a double garage door provides. So, why wait? Start planning your conversion today!