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Doors · sliding glassSliding patio door cost calculator
An old sliding door gives itself away: it drags on a worn track, lets in a draft you can feel from across the room, fogs between the panes, or leaves a water stain on the floor after a storm. Replacing it is one of the most visible upgrades in a house, and one of the easiest to get wrong if the opening is not flashed properly.
The door unit is the biggest line, set by width, number of panels and frame material. Labor depends on whether the installer keeps the old frame and slides a new door into it (an insert), or takes the opening back to the studs and installs a full new frame with a new sill pan and flashing. A full-frame install costs more but is the only way to fix rot or a leaking sill.
This calculator prices the door, labor and flashing, haul-away, triple-pane glass, upper-floor access and a permit if the header is opened. Impact glass for hurricane zones is a different product; the page points you to the impact window calculator for that.
Reviewed 25 October 2026 · Written by Mantu Kumar
See the photos · See the cost diagram · Open the calculator
Key facts at a glance
- Vinyl 5–6 ft two-panel door: about $800–$1,900 for the unit; fiberglass about 45% more; wood about 75% more.
- Labor and flashing: about $700–$1,700 for an insert; about 35–45% more for full frame.
- Wider doors: an 8 ft opening runs about 35% more and a 12 ft opening about 95% more; three panels add about 28%.
- Triple pane: about $400–$1,100 extra. Lift access about $400–$1,200.
- Header permit: about $200–$900 when the opening is changed. Haul-away about $80–$250.
National 2026 planning ranges before your regional multiplier. French doors and multi-slide walls are different products.
2026 planning ranges
- 1Door unit
- 2Labor and flashing
- 3Insert or full frame
- 4Triple-pane glass
- 5Header permit
- 6Haul-away
- 7Lift for upper floors
- 8Width + panels
- 9Vinyl, fiberglass or wood
Price your new patio door
No email · nothing sentDiagram, part by part
Patio door replacement: every numbered part explained
The drawing above has 9 numbered parts, from The door unit to Frame material. Each card zooms in on one part, says what pushes its price up or down, and tells you what to look for on a written quote. After you run the calculator, the parts in your scope show their dollar band.
1 The door unit
$800–$6,500 by size and material
The factory-built door: frame, fixed and sliding panels, glass, rollers, track and hardware. Vinyl is the most common and lowest priced. Fiberglass is stiffer and paints well. Wood looks warmest inside and needs the most care outside.
What moves it: Width, number of panels, frame material, glass package, color and brand.
On the quote: Look for the brand and series, U-factor and SHGC from the NFRC label, and the warranty on glass seals and rollers.
2 Labor, flashing and setting the frame
$700–$4,800
The installer removes the old door, prepares the opening, installs a sloped sill pan, sets the new door level and square, then flashes and seals it to the house wrap and trims it inside and out.
What moves it: Insert or full frame, door width, siding type and how much rot is found.
On the quote: Make sure a sill pan and flashing are listed. Most leaks at patio doors start at the sill.
3 Insert or full-frame replacement
Changes the labor line
An insert slides a new door into the existing frame and is faster and cheaper, but it keeps any hidden problems. Full-frame replacement removes everything to the studs and lets the installer fix rot and flash the opening properly.
What moves it: Condition of the old frame and sill, and whether interior trim must change.
On the quote: If the old sill is soft or has leaked, insist on full frame.
4 Glass package: dual or triple pane
$400–$1,100 for triple
Dual-pane low-E glass with argon is standard. Triple pane adds insulation and quiet, and is worth it in very cold climates or next to noisy streets. It is heavier, so the rollers and track matter more.
What moves it: Size of the panels and climate.
On the quote: Compare U-factors on the NFRC label, not just the number of panes.
5 Header and permit
$200–$900
Replacing a door in the same opening usually needs no structural work. Widening an opening, or finding a damaged header, means a new header sized for the load above and a building permit.
What moves it: Load above, opening size and local permit rules.
On the quote: If the opening is changing size, ask for the header size and permit in writing.
6 Removal and haul-away
$80–$250
Old sliding doors are heavy, and the glass is hard to dispose of. Most installers include haul-away; some charge separately.
What moves it: Door size and local disposal fees.
On the quote: Confirm haul-away is included.
7 Lift or upper-floor access
$400–$1,200
A door on a second-floor balcony or a walkout above grade may need a lift, extra crew or scaffolding to move heavy panels safely.
What moves it: Height, access path and door weight.
On the quote: Ask how panels will be moved and whether railings must come off.
8 Width and panel count
5 to 12 ft, 2 or 3 panels
A 5- or 6-foot two-panel door is standard. Eight-foot doors and three-panel 12-foot doors cost more for the unit and need a longer header, and very wide openings are heavy to set.
What moves it: Opening width and the number of panels.
On the quote: Ask for the exact unit size and whether the rough opening must be changed.
9 Frame material
Vinyl lowest, wood highest
Vinyl frames cost the least and need little upkeep. Fiberglass is stronger and more stable in heat. Wood looks best inside but needs finishing and protection, and is often clad in aluminum outside.
What moves it: Material, color and interior finish.
On the quote: Ask about the frame warranty and whether the interior finish is factory applied.
Project photo guide
Patio door installation in photos: rough opening, sill pan flashing and interior trim
A sliding or French patio door sits right at deck or patio grade where splash-back water is constant: a lasting installation depends on inspecting the subfloor after removing the old unit, forming a watertight sill pan before setting the new frame, and insulating and trimming both sides cleanly.
How the job works in 3 key stages
All three step images are AI-generated illustrations for explanation. Not a site inspection, bid, or coverage decision.
Step 01Rough opening
Once the old panels and frame are pried out, installers strip the threshold down to bare framing and subfloor to check for soft, water-rotted rim joists or subfloor sheathing before anything new goes in.
On the quote: Ask for the unit price to replace a rotted subfloor strip or ledger board under the threshold if water damage is uncovered.
Step 02Sill pan and flashing
A flexible stretch-flashing sill pan or rigid upturned pan is installed across the bottom of the rough opening with corner dams and double beads of polyurethane sealant so any water entering the track drains outward.
On the quote: Insist that a sill pan and jamb/head flashing tape are written into the quote—skipping the sill pan is the number-one cause of rotted subfloors.
Step 03Trim and hardware
After plumbing and shimming the frame so the active panel glides and latches smoothly without binding, the perimeter gap is filled with low-expansion window foam and finished with interior casing trim and exterior drip cap.
On the quote: Confirm tempered safety glass (required by code in all doors), Low-E argon glazing, screen door inclusion, and interior/exterior trim painting or cladding.
What this photo guide helps you verify on a written quote
- Tempered & Low-E glass: Building code requires tempered safety glass in every patio door; check the NFRC U-factor and SHGC sticker.
- Sill pan requirement: Never accept caulk-only installation at deck or patio level—require a flashed sill pan under the threshold.
- Subfloor & ledger check: If a wooden deck attaches right under the patio door, rotting deck flashing often damages the door sill framing too.
- New opening header: Widening a window into a patio door requires a structural header, king/jack studs, and a building permit.
On this page
- The diagram, part by part
- Photo guide: hero and 3 project steps
- Patio door cost by width, material and install type
- What common patio door jobs cost
- Vinyl, fiberglass or wood
- Signs your patio door needs replacing
- Patio door cost by region
- What “Glass” does to the price
- What “Width” does to the price
- How age changes the patio door claim payout
- How to read the quote, line by line
- How long the job takes
- Worked example
- Does insurance cover a patio door replacement?
- Ways to keep the cost down
- Sources and further reading
- Frequently asked questions
Patio door cost by width, material and install type
Unit prices are for two-panel doors in vinyl unless noted. Labor is shown for an insert install.
| Scope | 2026 planning range | Why it is its own line |
|---|---|---|
| Vinyl, 5–6 ft | $800 – $1,900 | The common replacement. |
| Vinyl, 8 ft | $1,080 – $2,565 | Wider opening. |
| Vinyl, 12 ft, three panels | $1,997 – $4,742 | Large openings. |
| Fiberglass, 5–6 ft | $1,160 – $2,755 | Stiffer, paintable. |
| Wood, 5–6 ft | $1,400 – $3,325 | Clad exterior recommended. |
| Labor and flashing, insert, 5–6 ft | $700 – $1,700 | Keeps the old frame. |
| Labor and flashing, full frame, 5–6 ft | $945 – $2,465 | Back to the studs. |
| Triple pane upgrade | $400 – $1,100 | Cold or noisy sites. |
Impact-rated doors for hurricane zones are priced on the impact window calculator.
What common patio door jobs cost
Four typical replacements at the national average.
| Job | Planning range | Midpoint |
|---|---|---|
| 6 ft vinyl, insert The common swap. | $1,580 – $3,850 | $2,715 |
| 6 ft fiberglass, full frame, triple pane Fixing a leaky sill. | $2,585 – $6,570 | $4,578 |
| 8 ft wood, full frame Premium look. | $3,246 – $8,067 | $5,656 |
| 12 ft three-panel vinyl, header permit Widened opening. | $4,120 – $10,699 | $7,410 |
Each row is this page’s calculator run with the inputs described, at the national average. Change the region and the inputs above to see your own numbers.
Vinyl, fiberglass or wood
All three can perform well. Choose for climate, color and maintenance more than for price alone.
| Option | Best when | Watch out for |
|---|---|---|
| Vinyl | Most homes; budget; white or light colors. | Dark colors can warp in sun; bulkier frames. |
| Fiberglass | Hot sun, dark colors, long life. | Higher cost; fewer local brands. |
| Wood (clad) | Traditional homes; warm interior look. | Highest cost; interior finish care. |
| French door instead | Swing doors with more open width. | Needs swing space; different product. |
Signs your patio door needs replacing
- Hard to slide even after cleaning the track and adjusting rollers.
- Fog between the panes means failed seals.
- Drafts you can feel near the frame.
- Water on the floor or soft subfloor near the sill.
- A lock that will not latch or a bent frame.
- Condensation or frost on the inside glass in winter.
Patio door cost by region
The calculator's default patio door job, repriced for each of its six regions. At the national average it runs $1,580 – $3,850; South / Lower Midwest is the lowest at $1,375 – $3,350, and West Coast metro is the highest at $2,054 – $5,005, a gap of about $1,167 at the midpoint.
| Region | Planning range | Midpoint |
|---|---|---|
| National average | $1,580 – $3,850 | $2,715 |
| South / Lower Midwest | $1,375 – $3,350 | $2,362 |
| Mountain / Plains | $1,501 – $3,658 | $2,580 |
| Mid-Atlantic / Upper Midwest | $1,770 – $4,312 | $3,041 |
| Northeast metro | $1,991 – $4,851 | $3,421 |
| West Coast metro | $2,054 – $5,005 | $3,530 |
What “Glass” does to the price
Every other input stays at its default and only “Glass” changes. The cheapest choice, Impact glass — different tool, comes to $0 – $0; the most expensive, Triple pane, comes to $1,980 – $4,950.
| Choice | Planning range | Midpoint vs default |
|---|---|---|
| Dual pane (default) | $1,580 – $3,850 | — |
| Triple pane | $1,980 – $4,950 | +$750 |
| Impact glass — different tool | $0 – $0 | −$2,715 |
What “Width” does to the price
Every other input stays at its default and only “Width” changes. The cheapest choice, 5–6 ft, comes to $1,580 – $3,850; the most expensive, About 12 ft, comes to $3,005 – $7,270.
| Choice | Planning range | Midpoint vs default |
|---|---|---|
| 5–6 ft (default) | $1,580 – $3,850 | — |
| About 8 ft | $2,105 – $5,110 | +$892 |
| About 12 ft | $3,005 – $7,270 | +$2,422 |
How age changes the patio door claim payout
Using the default job, a $1,000 deductible and a 25-year expected life. At 10 years old, about $1,086 is held back as depreciation; a replacement cost policy releases it after the work is finished, while an actual cash value policy keeps it.
| Age | Wear | First check | Held back |
|---|---|---|---|
| 2 years | 8% | $1,498 | $217 |
| 5 years | 20% | $1,172 | $543 |
| 10 years | 40% | $629 | $1,086 |
| 15 years | 60% | $86 | $1,629 |
| 20 years | 80% | $0 | $2,172 |
| 30 years | 80% | $0 | $2,172 |
How to read the quote, line by line
Patio door quotes look alike until you read the install details.
- Brand, series and size. Exact model.
- NFRC ratings. U-factor and SHGC.
- Insert or full frame. And why.
- Sill pan and flashing. Named products.
- Interior and exterior trim. New or reused.
- Haul-away. Included.
- Warranty. Product and installation, separately.
How long the job takes
| Stage | Typical time | What happens |
|---|---|---|
| Measure and order | 2 – 8 weeks | Custom sizes take longer. |
| Removal and install | 4 – 8 hours | Usually one day. |
| Trim and finish | 0 – 1 day | Paint or stain may follow. |
| Permit inspection | 1 – 14 days | Only if the header changes. |
| Track care | Yearly | Clean and lubricate. |
The opening is usually closed the same day. Ask about a temporary cover if rot repair might delay the install.
Worked example
A 20-year-old aluminum slider in a 1990s house drags and fogs. The frame is sound, so a vinyl insert with dual-pane low-E glass is installed from a ground-floor deck.
6 ft two-panel vinyl door, insert install
Worked example| Line item | National planning range |
|---|---|
| Vinyl sliding door unit | $800 – $1,900 |
| Labor, flashing and setting the frame | $700 – $1,700 |
| Haul-away | $80 – $250 |
| Total before regional adjustment | $1,580 – $3,850 |
Midpoint about $2,715. If the sill were soft, a full-frame install would raise labor to about $945–$2,465 and allow a proper sill pan.
Does insurance cover a patio door replacement?
Wear, failed seals and drafty frames are not covered. Sudden damage from a covered event, such as a break-in, a falling tree or a storm, usually is, minus the deductible. Glass breakage coverage varies by policy.
After a break-in, file a police report and photograph the damage before boarding up.
What this page will not claim
- Impact or hurricane-rated doors.
- French or multi-slide door pricing.
- Rot repair beyond the frame.
- Energy savings estimates.
Ways to keep the cost down
Patio door costs depend on size and install method.
- Keep the same size. No header work.
- Use an insert where frames are sound. Less labor.
- Choose vinyl. Lower unit cost.
- Skip triple pane in mild climates. Small benefit.
- Do it with window work. One crew.
- Fix rot early. Smaller repairs.
Sources and further reading
- ENERGY STAR — Residential windows, doors and skylights
- National Fenestration Rating Council (NFRC)
- International Code Council — International Residential Code
- HomeGuide — Front door replacement cost
Prices on this page are planning ranges built from public 2026 US cost guides and contractor rate sheets, widened where they disagreed, and multiplied by the same regional index as every other ReplaceCost calculator. Rules and definitions come from the agencies listed. See the methodology for how ranges are set and reviewed.
Frequently asked questions
How much does it cost to replace a sliding patio door?
A standard 6 ft vinyl door with an insert install usually runs about $1,580 to $3,850. Fiberglass, wood, wider doors and full-frame installs cost more.
Is full-frame replacement worth it?
Yes if the sill or frame has leaked or rotted, or the door is being changed in size. Otherwise an insert is fine.
How long does a patio door last?
Often 20 to 30 years. Rollers and weatherstripping can be replaced along the way.
Do I need a permit to replace a patio door?
Usually not for the same size; yes if the opening or header changes.
Vinyl or fiberglass patio door?
Vinyl is cheaper and works well; fiberglass handles heat and dark colors better.
Can I just replace the glass?
Often yes for fogged glass in a good frame. A glass shop can price an insulated glass unit.
How long does installation take?
Usually half a day to a day.
Does insurance cover a broken patio door?
Sudden damage from a covered event usually is; wear is not.
What is a multi-point lock?
A lock that engages the door at several points along the frame instead of one. It improves security and pulls the panel tight against the weatherstripping for a better seal.
Can a patio door be made more secure?
A bar or dowel in the track, a secondary foot lock, laminated glass and reinforced strike screws all make a sliding door harder to force.
Why is my slider hard to open?
Dirt and debris in the track and worn or flattened rollers are the usual causes. Cleaning the track and adjusting or replacing rollers often fixes it without replacing the door.
Is a French door better than a slider?
French doors swing open and give a wider opening, but need clear floor space for the swing. Sliders save space and are often more energy efficient for the price.
Do patio doors need permits?
Same-size replacements often do not, but changing the opening size, the header or the wall structure usually needs a permit.
Can a patio door be impact rated?
Yes. Impact-rated sliding and hinged patio doors are available for hurricane regions and need product approval like impact windows.
How often should tracks be cleaned?
Vacuuming and wiping the track every few months keeps rollers moving smoothly and prevents early roller wear.