Both styles open onto outdoor space, but they suit very different rooms and lifestyles. Here is the honest comparison.
Footprint — Floor Space Required
Sliding doors require zero interior or exterior swing space, making them ideal for tight floor plans. French doors need 60 cm of swing arc per panel.
Ventilation Differences
French doors open 100% of the width when both panels swing. Sliders open only 50%. For warm summer afternoons, French doors win.
Energy and Sealing
A well-built French door with a multi-point lock seals tighter than a slider. Modern sliders close the gap, but the hinged design still has a slight edge in Quebec winters.
Browse Options
Compare specs on our patio doors and patio sliding doors pages.
Frequently Asked Questions
Which costs more?
French doors typically cost 15–25% more for similar quality.
Which is more secure?
Both can use multi-point locks. French doors with a flush bolt on the inactive leaf are slightly more secure.
Can I convert a slider into French doors?
Often yes, but the frame opening must match.