Name: Portes et Fenêtres Factory Direct Montréal Windows & Doors
Price range: $$
Rating: 4.5

By Factory Direct MTLPublished On: September 12, 2026Last Updated: September 14, 20262.8 min readCategories: Doors

From the Factory Direct Montreal team — more than 35 years measuring, selling and installing windows and doors across Greater Montreal, Laval and the South Shore. RBQ 5735-2130-01.

Patio doors are the largest piece of glass in most Montreal homes and the one that gets opened a thousand times a summer. The style you choose decides how the room feels, how the deck gets used and how the door behaves when the thermometer says −25. These are the six questions we settle before writing a quote.

Three patio door stylesSlidingOne panel glides behind the other;roughly half the width opens; noswing space needed.FrenchOne or both panels swing; up to thefull width opens; needs clearanceinside or outside.Bi-foldingPanels fold and stack to one side;almost the entire opening clears;ideal for wide spans.

Three patio door styles: how much of the opening actually opens

1. How much of the opening do you actually want to open?

A sliding door opens roughly half its width: one panel glides behind a fixed one. French doors swing, so one or both leaves can open the full width. Bi-folding doors fold and stack to one side, clearing almost the entire span — the choice when the goal is to erase the wall between kitchen and deck. Start here; everything else follows. See our patio doors and bi-folding doors.

2. Where does the door need room to move?

Sliding doors need no swing clearance — ideal beside a dining table or on a small balcony. French doors need a clear arc inside or outside; snow banks and barbecues are the usual conflicts. Bi-folds stack to one side and need that wall section free of furniture and switches.

3. How will it behave in February?

This is where patio doors differ most. Look at the threshold (thermally broken, not a plain aluminum sill), the seals on the moving panel, and the glass: triple-pane units with double Low-E coatings and argon fill are the standard on our uPVC line for a reason. ENERGY STAR certification for the Canadian climate zone is the shortcut label — and the condition for Rénoclimat’s $150 per opening.

4. How much light and view do you want to keep?

Sliding doors have the largest uninterrupted glass; French doors add vertical frames in the middle; bi-folds add a frame at every fold. If the view is the point, weigh the mullions against the opening size from question 1.

5. Security, screens and everyday use

Ask about the locking points on the moving panel, an anti-lift feature on sliders, and a screen that survives kids and dogs. Sliding screens are simple; French and bi-fold screens are retractable systems — good ones exist, cheap ones do not last.

6. Rebates and budget

Rénoclimat grants $150 for a patio door replaced in an existing rough opening with an ENERGY STAR-certified unit; keep the label and invoice for your energy advisor (official terms). Financing in monthly instalments is available on our quotes. As a rule of thumb, sliding is the most economical per opening, French sits in the middle, and bi-folding is the premium option because of the hardware and spans involved.