Double Garage Door Conversion
Modernise your garage
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Double Garage Door Conversion
Converting two single garage doors into one double door is a fantastic way to modernise your home, improve access, and create more usable space. At Access Garage Doors, we specialise in double garage door conversions, helping you achieve a seamless look while enhancing functionality. Whether you’re looking for better vehicle access or simply want to open up the garage space, a conversion can be a practical and aesthetic upgrade.
Our team is highly experienced in structural alterations and installing a range of high-quality garage doors. We work closely with you to ensure the conversion process is smooth, safe and meets your expectations. With a wide selection of designs and finishes, your new double garage door will be custom-fitted to suit your home’s style.






Benefits of Double Garage Door Conversions
A double garage door conversion offers numerous benefits, enhancing accessibility, functionality, and the aesthetic appeal of your property. Embracing a double garage door conversion can transform your garage into a versatile space that meets your needs while adding value to your home.
A double garage door conversion comes with numerous advantages that go beyond just convenience:
- Increased Space: Removing the central pier provides easier access for larger vehicles.
- Modern Look: Creates a streamlined, contemporary appearance.
- Improved Functionality: Simplifies parking and reduces the need to operate two doors.
- Enhanced Security: One solid door with modern security features can offer better protection.
- Energy Efficiency: One large, insulated door improves thermal performance compared to two single doors.
A double garage door conversion not only enhances the practicality and security of your garage but also contributes to the overall aesthetics of your home. Investing in a double garage door conversion is a smart choice that can elevate your property’s value and make your daily routines easier.
What's Involved in a Garage Door Conversion?
Converting two single garage doors into a double door involves structural modifications to your garage. Our team carefully removes the central pier and installs an RSJ lintel to provide structural support, ensuring the garage’s integrity. Watch our video to see the process explained step by step.
Watch the Video
Double Garage Door Conversion Process
Step 1
Inspection / Assessment
The process begins with an inspection of your garage to assess its structural integrity and determine the most suitable conversion approach.
Step 2
Removal of Old Doors
The existing single garage doors and their frames are carefully removed to prepare for the new double door.
Step 3
Support the Structure
Before any structural alterations, we temporarily support the roof and walls to ensure stability during the conversion process.
Step 4
Removal of the Central Pier
With temporary supports in place, the central pier is removed to create a wider opening.
Step 5
RSJ Lintel Installation
An RSJ (Rolled Steel Joist) lintel is installed to replace the central pier, ensuring essential structural support for the expanded garage door opening.
Step 6
Installation of New Double Sized Door
The new double garage door is then installed, complete with any desired automation features, and rigorously tested for smooth operation.









Get in Touch
Reach Out to Access Garage Doors Today
Interested in enhancing your home’s security and kerb appeal with a new garage door? Whether you’re looking for more information on a specific product or service, need impartial expert advice, or are ready to schedule your free home survey, we’re here to help. Simply fill in your details using our user-friendly contact form, email us directly at [email protected], or give us a call at 0800 716 569.
Our experienced surveyors will visit your property, assess your needs, and provide expert guidance on selecting the perfect garage door for your requirements. From initial enquiry to installation, our dedicated customer service team is committed to ensuring a seamless, hassle-free experience.
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*Free, no-obligation home surveys and estimates. Only applies to new garage door installations, not repairs.
What Our Clients Say
Great service all round
Access were ready to answer my questions at any time; the showroom is invaluable for seeing the product itself; they held onto the door until I was ready to install without quibble; installers came on time, installation was completed in good time and waste was cleared; they gave a quick tutorial on the workings and the controllers, many thanks.
Andrew
Date of experience: 24 May 2026
Excellent Service
We were after something a little bit different to the normal, Access were the only company we spoke to that actually understood what we wanted and John and Chris came up with a door that met our needs. It wasn’t an easy fit but Dave and Wayne took care to ensure it was going to work before fitting it, both were friendly and knowledgeable of the product, they came up with a solution for fitting, and did a clean and tidy job. We thoroughly recommend Access to anyone looking for a new garage door.
Carolyn
Date of experience: 8 May 2026
Great Job - Thank you
I had three quotes for my garage roller door, and Access Garage Doors stood head and shoulders above the others.
Nothing ever seemed too much trouble, even when I changed my mind about the outside surround.
My garage now has loads more space compared to the old up-and-over door, and the house is noticeably warmer too.
Well worth it.
Cheers
Keith
Date of experience: 16 February 2026
Did exactly what was needed
Prompt, clear comms, new door came within the times they estimated and was fitted well. We were given clear options, costings and it all felt impressively straightforward.
I am also impressed because a couple of years ago we'd sought their advice about putting an automatic opener on our existing door and they assessed that the door was getting too old - it wasn't a good idea to change - this was excellent advice or we could have paid twice.
Colin
Date of experience: 29 August 2025
Very professional company; excellent customer service
Prior to contacting Access, we had tried two other firms - one didn't want to get involved once they knew the make of the door involved whilst the other attended but the 'repair' did not work for long !
We thought we would need a completely new door but Access managed to repair it very effectively and saving our neighbours a considerable amount of money. We were most impressed by Access'excellent customer service and professionalism.
Neil
Date of experience: 14 April 2026
Frequently Asked Questions
A double garage door conversion is the process of replacing two single garage doors with one wider opening and one larger garage door. This usually involves removing the central pillar, adding the necessary structural support and fitting a new double garage door to create a more practical entrance.
A double garage door conversion can make access much easier, especially for larger modern vehicles. It can also create a more open and flexible space for storage, a workshop, a home gym or general household use, while improving the overall appearance of the garage.
Yes, in most cases the central brick pier between the two existing openings needs to be removed to create one clear double-width opening. This is normally replaced with suitable structural support above the opening.
An RSJ, or rolled steel joist, is a structural steel beam installed across the new opening. It replaces the support previously provided by the central pillar and helps carry the load above the garage opening safely.
This depends on the property and the scope of the work. A structural assessment is often needed to determine the correct support required, and building regulations or local authority approval may also apply depending on the project. It is always best to check the requirements before work begins.
A range of garage doors can be fitted after a double conversion, including sectional, roller and some up-and-over doors. Sectional garage doors are often a popular choice because they offer good insulation, security and smooth operation on larger openings.
The on-site structural work and garage door installation can often be completed over a short period, sometimes in as little as two days, depending on the scope of the project. However, overall lead times are usually longer because the new garage door is often made to order.
The cost depends on the size of the opening, the structural work required, the type of new garage door chosen and whether automation is included. Because every garage is different, the best way to get an accurate price is to arrange a free site survey and quotation.
Yes, in many cases it can, but projects involving a room above the garage usually require more detailed structural consideration. The suitability of the conversion depends on the construction of the property.
Our Showrooms
New Malden
320 West Barnes Lane
Motspur Park
New Malden
Surrey KT3 6NB
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Croydon
416 Brighton Road
South Croydon
Surrey
CR2 6AN
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Sidcup
9 Elm Parade
Main Road
Sidcup
Kent
DA14 6NF
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Watford
Unit 26 Orbital 25 Business Park
Dwight Road
Watford
Hertfordshire
WD18 9DA
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Upminster
Unit 1 Upminster Trading Park
Warley Street
Upminster
Essex
RM14 3PJ
- Monday – Thursday
7:30 – 17:00 - Friday
7:30 – 16:00 - Saturday
9:00 – 12:30



















