Choosing between French doors and sliding glass doors can be tricky. Both are popular types of patio doors that bring in natural light and connect living spaces to outdoor areas. The right choice often comes down to how much space you have, how you use the room and what style best suits your home.
What is the main difference?
The main difference is how the doors open. French doors swing outwards or inwards like traditional doors, while sliding doors move along a track to the side, allowing one fixed panel and one moving glass pane.

Pros of French doors
Traditional French doors – often seen in period homes – are known for their classic design and wide opening. With double doors that meet in the middle, they give a grand feel when opened and act as a strong design feature even when closed.
Modern French doors from Boston Trade Frames come with high security features, double glazing and slimmer frames than older styles, improving both energy efficiency and durability. They suit properties where you want a timeless look that has stood the test of time.

Pros of sliding glass doors
Sliding patio doors offer a generous expanse of glass, providing an unobstructed view of your garden area or outdoor spaces. Because the door sashes slide rather than swing, they take up no internal or external room, making them a perfect door choice where space is limited.
Larger space? Sliding doors can be made wider than most French patio doors, allowing more glass panels and better natural light. They’re often seen in modern homes with a focus on open-plan living and clean architectural design.
Which is better for energy efficiency?
In terms of thermal efficiency, both door types can perform well when fitted with quality double glazing and insulated frames. According to the Energy Saving Trust, upgrading to modern glazed doors can help reduce heat loss by up to 30% compared to older patio door designs. Whether you choose French or sliding, opting for advanced glass panes and secure seals is key to maintaining the comfort of your home.
Do I need enough space for French doors?
You’ll need to consider the large swing arc of French doors. If your furniture or layout of your home doesn’t allow for that movement, sliding doors may be the better option. For tighter spaces, sliding glass doors or even bifold doors can save precious space.
Are sliding doors more expensive?
Sliding doors can sometimes be a more expensive option due to the larger glass panels and track system, but the difference depends on size and specification. French door frames may be more cost-effective for smaller openings.

Which door type is easiest to live with?
A well-installed patio door should be easy to maintain and operate. Sliding doors require occasional track cleaning while French doors depend on well-fitted hinges. Choosing a trusted installer like Boston Trade Frames ensures long-term reliability either way.
Still unsure which is right?
If you’re torn between French doors vs sliding glass doors, think about how you move through the space. A sliding glass door suits homes where you want uninterrupted views and minimal frames. A French door suits homes where character and wide opening are more important.
Speak to our friendly team
Boston Trade Frames supplies both French doors and high-performance sliding doors, tailored to your space and lifestyle. For expert advice and a free quote, get in touch with our knowledgeable team today.
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