Patio door replacement cost
Replacing a sliding patio door costs $1,200 to $4,000 installed, typically $2,200. Most complaints about a sticking door are worn rollers, which is a $150 repair.
National average
$2,200
per each
Replacing a sliding patio door costs $1,200 to $4,000 installed, typically around $2,200. French doors run $2,000 to $6,000. A multi-panel folding or stacking door starts around $8,000 and rises quickly from there.
Patio doors are the largest single glazed opening in most houses, which is why they cost more than a window and why they are the first thing to feel cold in January.
Cost by type
| Type | Installed | Notes |
|---|---|---|
| Sliding, two panel, vinyl | $1,200 to $2,500 | The standard replacement |
| Sliding, two panel, fiberglass or clad | $2,000 to $4,000 | Stiffer frame, better on large openings |
| Sliding, three or four panel | $2,800 to $6,500 | Wider openings, heavier hardware |
| French, hinged, two panel | $2,000 to $6,000 | Swing space needed inside or out |
| Folding or bi-fold | $8,000 to $30,000 | Opens the whole wall, specialist install |
Replacing within the existing opening is what these figures assume. Enlarging the opening is structural work: a new header, possibly an engineer, a permit, and $2,000 to $8,000 on top before the door goes in.
Sliding against French
Sliding takes no floor space to operate, which is the main argument and often a decisive one in a small room. Modern rollers and tracks are far better than the sticking doors people remember. It gives a smaller clear opening, because one panel is always in the way.
French doors open fully, seal better because they compress against the frame rather than sliding past a brush seal, and look more substantial. They need somewhere for the leaves to swing, which is usually the constraint.
For weather sealing, hinged doors are meaningfully better. For a windy exposed elevation, that matters.
Why the old one sticks
Nearly every complaint about a sliding door is one of four things, and three are repairs rather than replacements:
Worn rollers. $150 to $400 to replace, and it fixes most sticking doors. Worth trying before buying a new door.
A bent or dirty track. Cleaning is free. A track cap over a damaged track is $100 to $300.
A failed seal in the glass, showing as fog between the panes. On some doors the glass unit alone can be replaced for $300 to $800.
A frame that has dropped or racked, usually because the header above has settled or the sill was never supported. This one is a replacement, and if the cause is structural, fixing the door without fixing the cause repeats the problem.
What belongs in the quote
- Removal and disposal of the old unit
- The sill pan or pan flashing under the new door, named
- Flashing at the head and jambs, tied into the existing weather barrier
- Low-expansion foam and interior trim
- Interior and exterior finish work, and who paints it
- Whether the screen is included, which it often is not
- Tempered safety glazing, which is a code requirement for any door
The sill pan is the line to check. A patio door sits at the bottom of a wall where water collects, and a door installed without a pan will eventually rot the floor framing under it. Many installers skip it. Ask.
Making it warmer
A patio door is a large piece of glass and it will always be the coldest surface in the room. What helps:
- Low-emissivity coating and argon fill, which is standard on decent units
- A warm-edge spacer between the panes, which reduces the cold strip at the base
- A thermally broken frame, if aluminium
- Heavy curtains or cellular blinds, which do more per dollar than most upgrades
Triple glazing exists for patio doors and adds $600 to $1,800. In a genuinely cold climate it changes how the room feels near the door. Elsewhere it is hard to justify.
Frequently asked questions
How long does it take?
Half a day to a full day for a like-for-like sliding door replacement. Longer for French doors, for anything that changes the opening size, and for multi-panel systems, which are often a two-day install with a specialist crew.
Do I need a permit?
For a like-for-like replacement in the same opening, usually not. For any change to the opening size, yes, because it involves the header.
Can a sliding door be replaced with French doors?
Yes, if the opening width suits. A standard six foot sliding opening takes a two-leaf French door directly. The complication is swing space and the floor finish, since the old track leaves a gap in the flooring.
Is a screen included?
Often not, and it is a common surprise. A sliding screen is $100 to $400. Ask explicitly.
Should I repair or replace?
Repair if the frame is square and sound and the problem is rollers, track or hardware, which covers most complaints and costs a fraction. Replace if the frame has dropped, the sill is rotten, or the glass seals have failed on a unit where the glass cannot be replaced separately.
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