Short answer
A patio door installed runs about $3,973 to $7,500 in our market, and that is a complete number covering the unit, the frame, the hardware, the labor and the finish work. Width and panel count move it more than anything else, followed by frame material, the glass package and what the crew finds under the old threshold. A two-panel slider in a sound standard opening sits near the bottom of the range; a wide three-panel unit with an upgraded frame and a repaired sill sits near the top.
A patio door installed runs about $3,973 to $7,500 in our market. That is the whole number — the door, the frame, the hardware, the labor, the sealing and the trim work — not a starting price that grows once someone measures.
Where your project lands inside that spread comes down to five things: how wide the opening is, how many panels the unit has, what the frame is made of, what glass package goes in it, and what the crew finds under the old threshold when the existing door comes out. A patio door is mostly glass, which means the glass decision carries more weight here than it does on any other door in the house.
What is actually included in an installed patio door price?
An itemized patio door price from us covers the complete job:
- The door unit itself — panels, frame, jamb, sill and screen
- Removal and disposal of the old door
- Inspection and repair of the framing, subsill and rough opening
- Setting the new unit plumb, square and level with shims
- Insulating and air-sealing the perimeter
- Flashing and the exterior sill pan detail
- Interior and exterior trim, threshold and finish work
- Hardware, lock and adjustment of the weatherstripping
- Cleanup and a final walk-through
When a quote is meaningfully lower than another, it is almost always because one of those lines is missing or the product is a different tier. Compare the lines, not the totals.
What does a patio door cost installed?
The range is real, and configuration is what places you inside it. Here is how the common setups tend to sort.
| Configuration | Typical position in the $3,973–$7,500 range | Why |
|---|---|---|
| Two-panel slider, standard 5–6 ft opening, vinyl frame | Lower end | Stock-friendly size, one moving panel, sound existing opening |
| Two-panel slider, upgraded frame or low-SHGC glass | Lower-middle | Same labor, better unit |
| French door, two panels, standard opening | Middle | More hardware, tighter tolerances, more finish work |
| Three-panel or 8–9 ft slider | Upper-middle | Larger glass, heavier unit, more crew time |
| Wide unit plus sill or framing repair | Upper end | Structural repair added to the door scope |
| Wide unit with grids, upgraded hardware and full trim rebuild | Top of range | Product and carpentry both move up |
Install time is 1–2 days for most patio door projects, and the house stays livable — the old unit does not come out until the new one is on site and ready to go in.
What moves the price the most?
Width and panel count
This is the biggest lever. A standard two-panel slider in a six-foot opening is the most common patio door in this region, and it is the least expensive to build and set. Go to eight or nine feet and you add glass area, weight, and a second person on the panel. Go to a three-panel configuration and you are buying another sash, another track section and more sealing surface.
If you are simply replacing what is there, the opening width is already decided and the price is fairly predictable. If you want a wider opening, that is a header and framing conversation priced separately from the door.
Frame and panel material
Vinyl frames are the value answer and they perform well in this climate. Fiberglass and composite cost more and are worth it on wide units and on dark exterior colors, because they expand and contract less and hold a dark finish on a sun-beaten elevation without distorting. Clad-wood units sit at the top for the interior look.
We are manufacturer-direct on the brands we carry, including Andersen and ProVia, so the material gets matched to the elevation instead of to whatever line is being pushed that month.
The glass package
A patio door is roughly 80% glass. On an entry door the glass is a design decision; on a patio door it is the performance decision. Low-E coating, argon fill and a warm-edge spacer are worth specifying deliberately. So is laminated glass if the door faces a road — it cuts noise noticeably and it is tougher.
The sill, threshold and flashing detail
This is the line homeowners never think about and the one that decides whether the door is still tight in ten years. Patio doors sit at the bottom of a wall where water collects and where decks and patios often slope the wrong way. If the subsill under the old unit is soft, it gets repaired before the new door goes in. That is scope discovered at removal, and it is the single most common reason a patio door quote has a repair allowance in it.
Hardware and screens
Multi-point locking hardware, upgraded handle sets, a heavy-duty roller package on a wide slider, and a retractable screen instead of a standard one all add cost. None of them are large individually; together they can move a quote several hundred dollars.
Why SHGC matters most on a west-facing patio door
Our entire service area — Southeast Tennessee, North Georgia and Northeast Alabama — sits in the ENERGY STAR South-Central climate zone. A qualifying unit here needs a U-factor of 0.28 or lower and an SHGC of 0.23 or lower.
SHGC, the solar heat gain coefficient, measures how much of the sun's heat passes through the glass. A lower number blocks more. In this region, cooling load dominates, not heating load — which means SHGC does more for summer comfort and power bills than squeezing the U-factor down another few hundredths.
That matters more on a patio door than on any window in the house, for two reasons:
- Area. A six-foot slider is roughly the glass area of three or four double-hungs in one plane. Whatever the glass lets through, it lets through a lot of.
- Orientation. Patio doors point at the back yard, and in a huge share of the homes we work on, the back yard faces west or southwest. That is the elevation that takes the hard afternoon sun in July.
A west-facing patio door with a generic glass package is why one room in the house runs five degrees warmer from three o'clock on, and why the furniture in front of it fades. We spec glass by elevation for exactly this reason — the same unit does not belong on every side of a house. If your door faces north or sits under a deep covered porch, the pressure on SHGC drops and you can weight the decision toward daylight instead.
Safety glazing is not optional here either. Glass in and near a door has to be tempered or laminated. That is a code requirement, not an upgrade line.
How do homeowners pay for a patio door?
Most pay cash or use contractor-arranged financing. We offer financing through the GreenSky® program: no interest if paid in full within 6, 15 or 18 months, or fixed rates starting at 6.99% APR with terms out to 144 months, with zero down for most approved homeowners, subject to credit approval. The promotional plans are the right tool when you have a payoff date you can genuinely hit; the fixed-rate terms are for spreading it on purpose.
One more thing worth raising at the estimate: our Hometown Hero program takes 50% off exterior doors for active military, veterans, police, fire, EMS and dispatchers. It is a standing program, not a seasonal promotion, and it applies to the door itself. Bring proof of service or your department ID and it comes off the quote on the spot.
What should be in writing before you sign?
Ask for these six lines on the quote, and compare them across any two bids:
- The exact product line and manufacturer, not just "vinyl slider"
- Panel configuration and the finished opening dimensions
- The glass package with the SHGC and U-factor stated
- Who physically performs the installation
- What happens if rot is found in the subsill or framing
- The warranty term on labor as well as material
That last one is where quotes separate most. A lifetime warranty on material paired with a one-year labor term is a much weaker promise than it sounds, because service calls years down the road usually involve installation details. Our coverage is spelled out in The Patriot's Promise, material and labor both, in writing.
Next step
No one can give you a real patio door number over the phone, because the opening width, the existing sill condition and the elevation the door faces all have to be seen. Schedule a free in-home estimate and you get one itemized price with the configuration, the glass and the install method spelled out. It is a sales appointment — an estimator measures, shows you the product and gives you the number — and it is the only way to replace a guess with a figure you can plan around.
