*All cost estimates on this page are planning estimates, not quotes. Actual costs vary by location, project scope, materials, site conditions, and contractor. See methodology and sources.
Panel count is the clearest way to place a slider, and this is where the range above has an edge worth stating.
Within a panel count: whether the rough opening changes (a new header dominates the quote), the frame and glass spec, and the subfloor under the track. Sliders leak there, so it is a common repair once the old unit is out.
A slider is more window than door, and a good quote reads like one: frame material, panel count, glass package and which panel operates; the screen, stated rather than assumed; track, rollers and the interlock where panels meet; weatherstripping plus the sill pan and flashing; hardware and lock, including any secondary foot lock; removal and haul-away.
Regularly excluded: rotted sill or subfloor repair at the track, structural work if the opening changes, patching siding outside the trim, notching deck boards tight to the threshold, blinds-between-glass, and a permit where required. Ask about disposal specifically. A tempered glass unit is heavy and awkward, and some crews price its removal separately.
Four to six hours for a like-for-like swap, per the scope on the door replacement cost guide, longer for multi-panel systems. One visit, unless rot turns up under the track.
The wait beforehand is glass: insulated units are made to the frame, tempered glass cannot be cut afterwards, and anything non-standard extends the order. Patio doors track the longer end of the lead times in our door replacement timeline guide. Unlike an entry door, this leaves a wide hole in your wall for hours. Ask what the crew does if weather turns, and plan where pets will be.
A surprising share of slider complaints are repairs. Work through this before pricing a new unit.
The line: a moving part or one pane, repair it. The frame, the sill, or how the unit sits in the wall, replace it.
A slider earns its place where swing clearance does not exist. It needs no arc inside or out, which makes it the default for a small deck or a patio with furniture close to the house.
Frame material, roughly bottom of the range upward:
Glass. Judge it as you would windows, because a slider is mostly glass. Double glazing is standard, a low-emissivity coating with argon fill is the cost-effective upgrade, and laminated glass adds security and quiet at the highest price. Tempered is not an upgrade. It is required in a door. Then the small calls: screen type, blinds sealed between panes, a low-profile track, and whether the operating panel is left or right, which costs nothing and is worth getting right.
Renewal by Andersen is consistently reviewed as a premium replacement door provider, offering Ensemble® Entry Doors and Andersen® Patio Doors. The door-specific reviews echo the window ones almost exactly: homeowners often highlight the installation experience, noting that crews arrived on time, were professional and courteous, and paid close attention to fit and finish. Many reviewers point to the customized fit, quality of the finished product, and the warranty service experience, for those who used it, as reasons they feel the investment is worthwhile.
Home Genius Exteriors fits ProVia entry and patio doors (Endure, ecoLite, Aspect and Aeris) and the door reviews describe the same named-project-manager experience the company is known for elsewhere, with a straightforward process and thorough cleanup. One practical flag on pricing: their promotional discounts are tiered by trade, and doors sit outside the materials discount entirely. So ask what your door quote actually qualifies for rather than assuming the headline offer applies.
Window Nation fits its entry and patio doors with the same Installation Masters™-certified crews as its windows, and most door-specific reviews describe exactly that: a quick, clean install day with little disruption. A handful of complaints are specifically about doors: missing screw-cover plugs, a patio lock that was stiff to operate, a screen door that came loose within weeks. None of them is about the door itself. Have the exact measurements and the hardware operation checked at the final walkthrough while the crew is still there, and confirm what the limited lifetime warranty covers on the moving parts.
Clear Choice Home Improvement fits entry, exterior and patio doors as one of six trades, and the door reviews echo what homeowners say about the rest of its work: responsive communication and crews that turn up on time and treat the house with care. It works across Massachusetts, New Hampshire, Rhode Island, southern Maine, Vermont and central Pennsylvania. One thing worth knowing before you inquire: Clear Choice does replacement and installation rather than repairs, so a single sticking door is not the job they are set up for.
Statewide fits sliding and French patio doors with insulated glass and low-E coatings. Homeowners describe having a leaking patio door and the rotted wood around it replaced in the same visit, with the crew hauling the old materials away and leaving the site clean. Reviews across its Texas markets describe the same unhurried, professional service its other trades are known for.
Power Home Remodeling builds its entry and sliding patio doors with ProVia, and the door-specific reviews are genuinely good. Homeowners report drafts gone and heating bills down after replacement, with most installs wrapped up in a few hours. Installation is carried out by independent contractors partnered with Power. Its Homeowner Bill of Rights applies to doors as it does to everything else, including the blind-pricing commitment that your price will not vary by your age, income or the value of your home.
The range above covers a standard two-panel slider replaced in an existing opening, with frame material and glass package setting where you land. Three-panel and multi-slide systems sit above it, and enlarging the opening adds structural work that has nothing to do with the door.
The same, because they are the same product: "sliding glass door" and "sliding patio door" describe one thing. What pushes a quote past the range is panel count, clad-wood framing, laminated glass, or rot in the sill found when the old unit comes out.
Far less than replacement, and a genuine repair is worth doing. Rollers, tracks, handles and locks are service calls rather than projects, and replacing one failed insulated glass unit is a fraction of a whole door where the sash allows it. Repair stops making sense once the frame or sill has failed.
Less than a full unit, priced by the size and type of glass. It must be tempered, and on an insulated unit the whole sealed assembly is replaced rather than one pane. Whether it is possible depends on the sash. Some are built to be reglazed, some are sealed, in which case you buy a panel or the door.
Both fall under one patio door scope on this site and publish the same range, so a straight style swap in an existing opening is not the jump people expect. The real questions are swing clearance, whether you want a screen (French doors need a separate retractable one), and hardware. See French door cost.
