Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Sliding & Patio Doors Across Key Largo
Door Installation in Key Largo for sliding and patio replacement runs between $2,400 and $9,800 for most homes, depending on whether you need a standard impact slider or a custom panoramic system with marine-grade hardware. That’s the honest range, and it reflects something most mainland installers don’t factor in: this island’s dual-ocean salt environment. We’ve worked enough canal-front homes in Key Largo to know that a door that holds up fine in Homestead can start corroding here within three years. If you’re calling about a slider that won’t open, a patio door that leaks during storms, or a full replacement, call (448) 428-7290 and we’ll schedule a free estimate at your home.
Why TruePane Windows & Doors Is Key Largo’s Preferred Sliding & Patio Doors Company
TruePane has built its reputation on work that lasts in places where most products don’t. Dale Kessler founded this company in 2008 on a rule that still governs every install: if the pane is not true, the job is not done. That standard matters more in Key Largo than almost anywhere else in South Florida, because the margin for error on a coastal opening is zero.
Our Sliding & Patio Doors team has handled replacements from the older CBS cottages near Tavernier Creek to elevated homes on pilings along the finger canals off Ocean Reef. Key Largo customers call us because we answer the phone with a live person, day or night, and because we show up with background-checked, uniformed technicians who measure every opening twice before any work begins. Reviews from Key Largo homeowners consistently mention the same things: the crew showed up when they said, the price on the quote matched the bill, and the door actually still slides smooth a year later.
We serve Key Largo through our South Florida operation, with dispatch and scheduling coordinated from our Miami office and crews working locally on the island. We’re not a franchise that parachutes in for a season. We hire local, train apprentices into journeymen, and stock marine-grade hardware specifically because Key Largo needs it.
Our Sliding & Patio Doors Services in Key Largo
Patio Sliding Doors
Patio sliders are the workhorse opening on most Key Largo homes, and they take a beating here. Standard aluminum frames with uncoated rollers seize up as salt crystallizes in the track, and homeowners find themselves shoulder-checking a door that used to glide. We replace them with impact-rated units built for Monroe County wind loads, using marine-grade frames and stainless hardware, as part of our Window Installation in Key Largo service. A standard patio slider replacement in Key Largo typically runs $2,400 to $5,200 installed, depending on size and manufacturer line.

Panoramic Sliding Systems
Waterfront homes in Key Largo demand wide sightlines, and this is where panoramic systems earn their cost. A multi-panel system with a view across Florida Bay isn’t just a door; it’s an architectural decision. These systems run $6,500 to $14,000 or more on Key Largo, driven by panel count, glass specification, and the marine-grade frame materials that survive here. We’ve installed similar systems on canal-front properties where the previous door had fused to its track after a decade of salt exposure.

Heavy-Duty Sliding Doors
For openings that carry real weight, including tall glass panels or doors that see constant use, heavy-duty sliders are the answer. Key Largo’s wind exposure means these have to be engineered, not just upsized. Reinforced frames, dual rollers rated for the load, and threshold systems that shed wind-driven rain are non-negotiable. We spec these doors for elevated homes where the opening faces open water, and where a failed panel during a storm isn’t an inconvenience; it’s a structural risk. Typical cost: $4,800 to $9,800.

Pocket & Barn Doors
Pocket and barn doors solve two problems in Key Largo homes at once: they free up floor space in smaller room footprints, and they can be specified with impact-rated glass and marine-grade hardware for exterior-adjacent use. Pocket doors on lanai openings are common, and they fail in predictable ways here: the upper track collects salt, the hangers corrode, and the door starts binding. We replace the hardware and often the slab, and the difference in operation is immediate. Expect $1,800 to $4,500 for most replacements, more for custom slabs.

Screen Door Installation
Screen doors in Key Largo serve double duty: keeping out the no-see-ums and surviving the salt. We install corrosion-resistant screen frames and marine-grade mesh that doesn’t sag or tear after a season or two. Screen door installation here runs $350 to $900 depending on size and mesh grade.

What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Key Largo
We’re an authorized installer for more than a dozen manufacturer lines, and on Key Largo jobs we lean toward the ones built for coastal exposure: CGI, CWS, and ES Windows. These manufacturers produce impact-rated doors engineered for high-velocity hurricane zones, and we register both warranty layers in writing before the truck leaves your driveway. That’s the Keystone Standard, and we don’t skip it for anyone. For full custom work, ECO Window Systems service in Key Largo gives homeowners a path to panoramic glass that standard catalogs can’t touch.
Common Sliding & Patio Doors Problems We See in Key Largo Homes
- Salt-crystallized tracks and rollers. Within three to five years of installation, standard aluminum hardware on a Key Largo door begins to seize. The fix isn’t lubrication; it’s replacement with marine-grade components, because the corrosion has already pitted the metal.
- Failed perimeter seals on impact units. The glass may be rated for wind, but the seal around the frame is what keeps wind-driven rain out of your wall cavity. We see doors on Key Largo where water has been entering behind the frame for years, and the homeowner only discovers it when the stucco starts staining.
- Fused original sliders on 1950s-70s CBS homes. The aluminum frame corrodes into the concrete opening over four or five decades. Extraction requires core drilling and a custom pressure-treated buck before the new impact unit can be anchored. Most mainland installers have never done this.
- Single-pane sliders with no impact rating. Older Key Largo homes often still have original jalousie windows and single-pane sliders. In a hurricane, these shatter, the home pressurizes, and the roof goes. Replacing them isn’t cosmetic; it’s the difference between damage and destruction.
Pricing for Sliding & Patio Doors in Key Largo, FL
Here are the numbers we quote on Key Largo jobs. A basic impact-rated patio slider starts around $2,400 and goes up to about $5,200 for a standard installation in a typical CBS opening. Panoramic systems start at $6,500 and can exceed $14,000 when you add multi-panel configurations, low-E coatings, and marine-grade frames. Heavy-duty sliders for tall or wide openings run $4,800 to $9,800. Pocket and barn doors sit between $1,800 and $4,500. Screen doors run $350 to $900.
What shifts the price in Key Largo specifically is frame material and hardware spec. We won’t quote standard coastal hardware on a canal-front home, because it will fail. The quote you get from us reflects the materials that will actually survive this environment, and we put it in writing before we order anything. Call (448) 428-7290 for a free estimate, and we’ll walk you through the numbers side by side.
We Also Serve Cities Near Key Largo
Our Sliding & Patio Doors in Key Largo crews also cover Homestead and surrounding South Florida communities. If you’re on the mainland but dealing with the same coastal salt and wind issues, the same marine-grade standards apply, and the same team handles your job. Call us and we’ll schedule a visit.
Serving Key Largo, FL - Our Local Coverage Area
We’re a Custom Windows & Doors - Key Largo company based in the area and we know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Sliding & Patio Doors in Key Largo
A marine-grade sliding door uses stainless steel or heavily coated hardware, powder-coated frames rated for coastal exposure, and seals manufactured with UV and salt resistance in mind. Standard impact products use zinc-plated and uncoated aluminum components that corrode measurably faster on Key Largo than even Miami Beach because the island is narrow, with salt-laden air moving across it from both the Atlantic and Florida Bay. We specify marine-grade frames and hardware on every Key Largo job, not as an upsell, but as the only spec that keeps the door operating past the five-year mark. Call (448) 428-7290 and we’ll show you the difference on paper.
Replacing a sliding door on an older Key Largo canal home often means extracting a frame that has fused to the concrete after 40 to 50 years of salt exposure. The extraction requires core drilling and a custom pressure-treated buck to create a clean, code-compliant opening for the new impact-rated unit. This is a demolition and framing scope that mainland South Florida jobs almost never require, and it adds time and cost to the project. We’ve done this work on CBS homes throughout Key Largo, and we quote it accurately before we start, so there’s no surprise line item. Call (448) 428-7290 for a free estimate that includes the real scope.
Yes. On Key Largo, wind-driven rain at 130 mph or higher can be forced past a degraded perimeter seal even when the glass remains intact. The water enters behind the frame, saturates the rough opening, and over multiple storms, rots the framing and stains the stucco. The glass held, so the homeowner never knows. We inspect seals on every sliding door we touch in Key Largo, and we replace them with marine-grade material rated for the pressure cycles this island sees. If you suspect water intrusion, call (448) 428-7290 and we’ll inspect before you have a bigger problem.
Monroe County’s wind design speeds approach 170 mph in exposed coastal categories, which means every replacement sliding door on Key Largo must be impact-rated and pressure-tested to meet current Florida Building Code. But in Key Largo specifically, the wind standard is only half the requirement. Frames, sill pans, hardware, and seals must also be marine-grade, because the corrosion load from dual-ocean salt exposure is higher than anywhere on the mainland. We quote doors that meet both standards, and we register the warranty layers that cover them. Call (448) 428-7290 for an exact quote.
Impact-rated glass stops flying debris, but on a Key Largo waterfront home, the frame and hardware are what fail first in this environment. A panoramic system has more moving panels, more track length, and more hardware than a standard slider, which means more surfaces for salt to attack. We specify reinforced frames, stainless rollers, and threshold systems built to shed wind-driven rain, because a panoramic door on a canal-front home faces salt-laden wind from both water sides simultaneously. The glass being rated doesn’t stop the track from seizing without marine-grade hardware. Call (448) 428-7290 and we’ll quote the full system, not just the glass.
Get Your Free Sliding & Patio Doors Estimate in Key Largo
If you live in Key Largo and your sliding door sticks, leaks, or simply doesn’t meet today’s impact standards, call (448) 428-7290. We’ll schedule a free estimate at your home, measure your openings, and quote you manufacturer lines side by side on paper. No pressure, no vague numbers, no change orders after the fact. Just a square deal from a company that’s been doing this work since 2008 and plans to be doing it in Key Largo for 30 more.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key Largo and all of South Florida with straight, true, done-right workmanship.
Six Reasons Homeowners Choose TruePane Windows & Doors
Impact systems engineered to design pressures up to +/-100, matched to your wind zone - your openings hold when the storm arrives.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Florida homeowners average around 25% savings on the windstorm portion of their policy after protecting every opening - some homes qualify for more.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.



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