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AfterFast, Reliable Custom Windows & Doors Across Key Largo
Custom windows and doors in Key Largo are not a cosmetic upgrade. They are the single most important structural decision on a home that sits between two bodies of saltwater inside a High Velocity Hurricane Zone. Every replacement on this island must carry a Miami-Dade Notice of Acceptance (NOA) impact rating. There is no interior zone, no exemption, no shortcut. We know that because we work here every week, from Tavernier down to the southern tip. If you are pricing custom windows in Key Largo, call (813) 320-9346 and we will walk you through what the code requires, what the manufacturers actually charge, and what a compliant quote includes that a cheap one quietly leaves out.
Why TruePane Windows & Doors Is Key Largo’s Preferred Custom Windows & Doors Company
TruePane Windows & Doors was founded in 2008 by second-generation glazier Dale Kessler. Dale’s rule is still on the whiteboard in our shop: if the pane is not true, the job is not done. In Key Largo, that rule matters more than it does inland because a window that is even slightly out of square on a stilt home will bind, leak, and fail inspection. We build our schedules around Monroe County permitting and inspections, not around getting in and out before anyone notices.
Key Largo homeowners tend to ask three things. Will this pass inspection the first time? Will the warranty hold up when the salt air hits it? Will you still answer the phone in five years when something moves? Our answers are yes, yes, and yes – we have served local communities since 2008 total, and a live person answers our phone 24 hours a day, 7 days a week. Not a voicemail tree. Not a call center. Our background-checked, uniformed technicians measure every opening twice and register both manufacturer warranty layers in writing before the truck leaves the driveway. That is The Keystone Standard. Every job is covered by our 90-Day Done Right Promise: if it is not done right, we make it right, with no paperwork fights and no arguing.
Our Custom Windows & Doors Services in Key Largo
Our Custom Windows & Doors work on the island spans everything from single replacement units to full canal-front rebuilds. The sub-services below are the ones we field calls about most often in Key Largo.
Custom Shape Windows
Key Largo homes built in the 1960s and 1970s often feature trapezoid, radius, and octagon windows that were originally site-glazed in wood or raw aluminum frames. Those frames are now oxidized, the glazing has failed, and the openings do not match any stock unit in a big-box catalog. We fabricate and install custom shape windows with marine-grade aluminum or vinyl frames, impact-rated glass, and NOA documentation filed with the county. A radius window in a stilt home over water is not a stock job. We treat it that way.
Oversized Glass Panels
Homes along Ocean Isle Estates and Buccaneer Point were built around views. That means openings that run 10-, 12-, sometimes 16-feet wide. Modern code requires those openings to carry impact-rated laminated glass or a Miami-Dade-approved shutter system. We install oversized panels from Andersen, Pella, and Marvin that carry the required NOA rating, with structural mullions engineered for the wind loads a Category 4 storm puts on a canal-front wall. This is not a job for a crew that learned framing on a mainland slab home.
Architectural Grilles & SDLs
Many Key Largo homeowners want the look of divided-light windows without sacrificing impact performance. Simulated Divided Lites (SDLs) applied to impact-rated glass give you the cottage look with the hurricane performance the code demands. We match grille profiles to the original millwork where possible, and we order them with marine-grade finish options that hold up under dual salt-spray exposure. A cheap interior grille will look fine for a year and then yellow and peel. We do not install those.
Commercial Storefront Glazing
Key Largo’s storefronts along Overseas Highway face the same HVHZ mandate as the residential canal homes. We install and replace commercial storefront glazing for local businesses, including impact-rated curtain wall systems on larger commercial projects. If you run a shop, restaurant, or office on the island, your storefront glass has to meet the same Miami-Dade NOA standard as a home slider. We quote both. We install both.
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 are an authorized installer for more than a dozen manufacturer lines, including Andersen, Pella, Marvin, PGT, and CGI. For Key Largo specifically, we recommend Andersen and Pella for residential custom work because their marine-grade frame options and impact glazing hold up best against the island’s salt-laden air from both the Atlantic and Florida Bay. We stock local parts for Key Largo customers so a failed weatherseal or corroded hardware replacement does not mean waiting two weeks on a mainland supplier. When you call us about a brand we install, we quote the manufacturer line side by side on paper so you see exactly what you are buying.
Common Custom Windows & Doors Problems We See in Key Largo Homes
- Aluminum frame oxidation and seized hardware. The dual salt-spray environment on this narrow island oxidizes aluminum frames and rusts steel hardware within months if non-marine-grade products were used. We replaced a 1970s slider in Ocean Isle Estates recently where the lock had corroded completely through. The homeowner had been using a stick to hold the door shut for three years.
- Foam weatherstripping that hardens and cracks. Key Largo’s year-round humidity above 75% combined with intense UV and salt air destroys standard foam seals within a few years. Once the seal cracks, air and water move through the sash and jamb, and the air conditioner works twice as hard. We install marine-grade compression seals on every job on the island.
- Non-standard rough openings on stilt homes. Elevated homes built on pilings throughout the 1960s-1980s canal-front subdivisions have rough opening heights that do not match slab-on-grade mainland framing. A crew that has never worked a stilt home will measure wrong, flash wrong, and seal wrong. We re-frame the opening to spec and flash it for the salt air coming off both bodies of water.
- Non-compliant replacements from mainland contractors. We regularly see Key Largo homes where a previous contractor installed standard impact units that do not carry the required Miami-Dade NOA rating. The homeowner thought they were compliant. They were not. When the inspector caught it, the entire job had to come out. We verify the NOA before we order anything.
Pricing for Custom Windows & Doors in Key Largo, FL
Custom window and door pricing in Key Largo runs higher than mainland South Florida because of the HVHZ rating requirement and the marine-grade materials the environment demands. Here is what homeowners on the island typically pay:
- Custom shape impact window: $1,200-$2,800 per unit, depending on size and frame material. A large radius or trapezoid window over a canal front runs $2,500-$4,500 installed.
- Oversized impact sliding glass door (12-16 foot): $8,000-$18,000 installed. The price swings on the wind load rating required for the exposure and whether structural mullion reinforcement is needed.
- Architectural grilles & SDLs on impact glass: $250-$500 per window added to the base unit cost, depending on grille profile and finish.
- Commercial storefront glazing: $60-$120 per square foot installed for impact-rated storefront systems, plus structural framing.
What affects the number: the size of the opening, the wind exposure category, the manufacturer line, and whether the home sits on open water or is partially sheltered. Every quote we write includes the permit, the NOA documentation, and the inspection. A cheap quote leaves those out and you find out when the inspector does not sign off. Call (813) 320-9346 for a free estimate. We quote the work, not a sales pitch.
We Also Serve Cities Near Key Largo
If you are outside Key Largo proper, we run crews into Tavernier, Homestead, Key Colony Beach, and Marathon regularly. The same salt-spray and HVHZ standards apply up and down the chain, and we quote them the same way we quote our Key Largo work: line-item pricing, manufacturer lines side by side, and no fine print that covers neither.
Serving Key Largo, FL - Our Local Coverage Area
We’re based in the Key Largo area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Custom Windows & Doors in Key Largo
Every window and door replacement in Key Largo requires a Miami-Dade Notice of Acceptance (NOA) impact rating. The entire island falls within Florida’s High Velocity Hurricane Zone, and Monroe County enforces the mandate without exceptions for interior rooms, second floors, or canal-front versus non-canal lots. If a contractor tells you a standard non-impact unit is fine for Key Largo, walk away. We verify the NOA product approval number for every unit we quote and register it in writing with both manufacturer warranty layers before the job starts. Call (813) 320-9346 if you need a copy of the NOA for your existing units or a compliant quote on replacements.
Hardware on a Key Largo window or door lasts roughly half as long as the same hardware inland because the island is flanked by the Atlantic Ocean on the east and Florida Bay on the west. That means every frame, hinge, lock, and weatherseal gets salt-laden air from two directions, all year, at humidity above 75%. Steel hardware rusts within months if it is not marine-grade. Aluminum oxidizes and seizes. Foam seals crack. We specify marine-grade stainless hardware and compression seals on every Key Largo job, and we register both manufacturer warranty layers in writing so the coverage holds when the environment does its worst.
A custom window renovation on a stilt home in a Key Largo canal-front subdivision requires a Monroe County building permit, an impact-rated product with a Miami-Dade NOA, and a rough opening inspection plus a final inspection. The county verifies the NOA number matches the unit installed. Some jobs also require a FEMA flood zone elevation certificate check if the opening size changes the structure’s enclosure. Our crews pull the permit, schedule the inspections, and stand on site until the inspector signs off. The permit and NOA paperwork go in a folder with your warranty registration. No chasing. No wondering what happened.
No. Monroe County requires that a corroded sliding glass door with failed frames be replaced as a complete unit with a Miami-Dade NOA-certified impact door. A glass-only swap leaves the corroded frame in place, which will continue to fail and will not pass inspection or meet HVHZ requirements. We know this is a more expensive answer than the glass swap a mainland contractor will quote, but the glass swap is not legal in Key Largo and it will fail the first time a building official looks at it. In Ocean Isle Estates, we replaced a severely corroded 1970s aluminum slider on a canal-front stilt home with a Miami-Dade NOA-certified impact unit from Andersen, re-framed the non-standard rough opening, and installed marine-grade flashing tape at the jamb to handle the salt-laden air from both the Atlantic and the bay. That is the only way that door goes in and stays in.
A documented, compliant installation with the Miami-Dade NOA paperwork on file is the difference between a paid windstorm claim and a denied one. If a hurricane damages a window or door and the installation was not permitted and inspected with the NOA recorded, your insurer can reduce or deny the claim on the grounds that the opening was not code-compliant. Many Key Largo homeowners find this out after the storm. We register both manufacturer warranty layers in writing and file the permit and inspection documentation so you have the paper trail before you need it. Some insurers also offer premium adjustments for documented impact-rated openings. Ask your agent. And keep the folder we give you.
If you are ready to price custom windows and doors in Key Largo, call (813) 320-9346. We will walk the job with you, quote the manufacturer lines side by side on paper, and give you a written price with the permit, the NOA, and the inspection included. A square deal, in writing, from a company that plans to be in town in thirty years.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key Largo and the surrounding Keys with custom window and door work done to the Keystone Standard.
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.