Patio Door Options: Sliding vs French vs Garden Doors Compared

Sliding Patio Doors

The classic choice for deck and patio access:

How they work: One or more panels slide horizontally on a track. Standard is 2 panels (one fixed, one slides). Premium options have 3-4 panels for wider openings.

Advantages: - Most space-efficient — doesn't swing into room or onto patio - Wide glass area for views and light - Easy operation, especially for heavy doors - Very affordable ($2,000-$4,000 installed for basic)

Disadvantages: - Only half the opening is usable at once - Tracks can collect debris and ice - Seal at the interlock is hard to make airtight - Harder to move furniture through

Best for: Smaller decks/patios, homes with limited interior space, budget-conscious projects, contemporary aesthetics.

Ottawa consideration: Keep track clean of ice in winter; consider a track heater for exposed locations.

French Patio Doors

The elegant, traditional option:

How they work: Two door panels hinged on the sides, swinging inward or outward. Usually both doors are operational.

Advantages: - Both doors open for full opening width - Classic, elegant aesthetics - Easier to seal than sliders (compression seals) - Moving large items is easier - Can be opened partially for ventilation

Disadvantages: - Requires swing clearance (inside or outside) - Typically narrower opening than sliders - More expensive than basic sliders - In-swing doors need floor space; out-swing can hit deck furniture

Cost: $2,500-$6,000 installed

Best for: Traditional homes, where aesthetics matter, rooms with adequate swing space, areas where you want the opening completely clear.

Ottawa consideration: Out-swing doors can be blocked by snow; in-swing solves this but requires interior space.

Garden Doors (Swinging Patio Doors)

A hybrid between French doors and regular entry doors:

How they work: Similar to French doors but typically one active panel and one fixed panel, or one active with a sidelight.

Advantages: - Easier to weatherseal than sliders - Can swing in or out - More versatile for odd openings - Often more affordable than full French doors

Disadvantages: - Only one panel opens - Less symmetrical appearance than French - Narrower opening than 2-panel French

Cost: $2,200-$4,500 installed

Best for: Replacement where single-active makes sense, side entrances, situations where symmetry isn't required.

Energy Efficiency Comparison

All patio doors have a lot of glass, so efficiency matters:

Typical U-factors (lower is better): - Basic sliding door: 1.8-2.2 - Good sliding door: 1.2-1.6 - Premium sliding door (triple-pane): 0.9-1.2 - French doors: 1.2-1.8 (easier to seal well)

Air leakage (lower is better): - Sliding doors tend to leak more due to track/interlock - French doors seal better with compression weatherstripping - Quality installation matters more than door type

For Ottawa: We recommend triple-pane for any patio door. The glass area is large, and heat loss adds up fast.

Improvement tips: - Multi-point locking systems improve seal - Warm-edge spacers reduce condensation - Low-E coatings are essential

Making the Right Choice

Consider your situation:

Choose sliding if: - Deck/patio space is limited - You want the widest views - Budget is a primary concern - You like the contemporary look

Choose French if: - You want the full opening clear - Traditional aesthetics matter - You have interior space for in-swing (or deck space for out-swing) - You're willing to pay more for style

Choose garden doors if: - You're replacing an existing garden door - The opening is non-standard - You want better sealing than a slider but don't need two active doors

Popular in Ottawa: Sliding remains most common due to cost and practicality. French doors are popular in traditional neighbourhoods and premium renovations.