Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom Windows & Doors Across Key Largo
Impact windows & doors in Key Largo begin with a simple fact: everything on this island is bathed in salt air from two directions, the Atlantic on one side and Florida Bay on the other. That changes what gets specified, what gets installed, and what survives. TruePane Windows & Doors has been doing this work long enough to know what the ocean does to a window frame over twenty years. If you need custom shapes, oversized glass, architectural grilles, or a full replacement that satisfies Monroe County’s High Velocity Hurricane Zone code, call us at (754) 238-2201. We’ll talk through what you’re dealing with, schedule a walkthrough, and give you a written quote with actual numbers on it.
Why TruePane Windows & Doors Is Key Largo’s Preferred Custom Windows & Doors Company
We’re not a franchise that parachutes into Key Largo for a season. TruePane was founded in 2008 by Dale Kessler, a second-generation glazier who grew up in the trade and still runs the company by one rule: if the pane is not true, the job is not done. That standard matters more on this island than almost anywhere else in Florida because the margin for error in a salt-air, 180-mph wind zone is thin. Our Custom Windows & Doors team includes background-checked, uniformed technicians who measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers in writing before the truck leaves your driveway. That’s the Keystone Standard, and we put it in writing on every single job in Key Largo.
We answer our own phone 24 hours a day, seven days a week. No voicemail tree, no callback form, no regional call center. When a homeowner off Ocean Bay Drive calls about a fogged custom picture window or a jalousie frame that seized shut from corrosion, a live person answers and starts solving the problem. We’ve served this island long enough to know the neighborhoods, the building styles, and the inspection quirks. That local knowledge gets folded into every quote we write.
Our Custom Windows & Doors Services in Key Largo
Custom Shape Windows
Key Largo’s older concrete block homes, especially the 1950s and 60s bungalows along streets like Ocean Reef Drive and Anchor Drive, often have unusual window openings that don’t match anything on a manufacturer’s standard spec sheet. Radius tops, angled transoms, porthole windows on canal-front elevations. We cut and set custom shape windows to those exact openings, NOA-rated for Monroe County, using stainless hardware that holds up in the omnidirectional salt spray, as part of every Key Largo window replacement we do. A custom-shaped window in Key Largo without a Miami-Dade Notice of Acceptance will fail permit inspection every time, so we never quote one that doesn’t have it.

Commercial Storefront Glazing
Storefronts in Key Largo take a beating that mainland shops never see. The front glass on a restaurant along the Overseas Highway gets sandblasted by wind-driven salt mist, UV-cooked all day, and asked to keep holding a seal through hurricane season. We install and service commercial storefront systems in aluminum and thermally broken frames, keeping in mind that every storefront replacement in Monroe County has to meet the same HVHZ impact standard as a residential window. When a storefront fails, it fails fast out here, and the fix needs to be right the first time.

Curtain Wall Systems
Larger commercial and condo buildings in Key Largo, especially the newer ones near the resorts, use curtain wall systems that span multiple floors and carry enormous wind loads. We install those systems with careful attention to structural anchoring and drainage, because the salt air here corrodes poorly specified fasteners and weeps within a few years. Every curtain wall we quote in Key Largo is designed around the wind zone and the marine environment, not just the finished look. We pull the permit, coordinate the inspection, and stand behind the install.

Architectural Grilles & SDLs
Simulated divided lites, or SDLs, give modern impact windows the look of traditional divided-light windows that fits a 1950s Key Largo cottage better than a monolithic pane. Architectural grilles can be applied internally or between glass layers, and out here the choice matters. External grilles in this salt environment become one more thing for corrosion to attack, so we usually specify between-the-glass or interior-mounted SDLs that stay clean and hold their finish. The look stays true to the house; the warranty stays intact.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Key Largo
TruePane is an authorized installer for more than a dozen manufacturer lines, and for Key Largo customers that matters because only certain product lines carry the NOA impact ratings Monroe County building officials demand. We work regularly with CGI, PGT, and ES Windows, among others, and we’ll quote your custom window or door job with options from manufacturer lines side by side on paper. Not a sales pitch. A spec sheet. You see exactly what each brand offers, what it costs, and what the warranty covers before you commit. And because our crews work in Key Largo week in and week out, we keep common parts and hardware for these brands staged so turnaround on a repair doesn’t wait on a freight truck from the mainland.
Common Custom Windows & Doors Problems We See in Key Largo Homes
- Corroded jalousie frames that seize shut. Salt air eats the aluminum pivot pins and operator mechanisms on original jalousie windows until the sash won’t open or close. We see this constantly in homes built from the 1950s through the 70s, and many of those jalousies are now being flagged by insurance carriers during inspections, which triggers non-renewal letters.
- Non-NOA “impact” windows that fail permit inspection. Some homeowners buy windows from out-of-state suppliers that label their glass “hurricane rated” but don’t carry a Miami-Dade Notice of Acceptance. Monroe County code requires NOA ratings on every replacement unit, no exceptions, so those windows end up unpermittable and the homeowner pays for product they can’t legally install.
- Rotting rough openings behind old window frames. Many original jamb-to-block connections on Key Largo homes have no flashing tape at all. Wind-driven rain off the Atlantic and Florida Bay gets driven behind the stucco, so by the time a homeowner opens the walls for a custom replacement, the rough opening is often soft and corroded and needs framing work first.
- Salt-weakened aluminum frames on custom shapes. Custom radius and angled windows, especially those installed decades ago, develop pitting and structural weakening along the frame and mullions out here far sooner than the same window would on the mainland. The glass often outlives the frame, which is why we quote full frame replacements rather than just retrofits on older custom units.
Pricing for Custom Windows & Doors in Key Largo, FL
Custom window and door pricing in Key Largo runs higher than mainland Broward or Miami-Dade for a reason: every unit has to carry an NOA impact rating, and the marine-grade hardware and stainless fasteners this salt environment demands add real cost to every opening. A single custom shape window replacement in Key Largo typically runs $1,800 to $4,500 installed, depending on size, radius complexity, and whether the existing opening needs framing repair. Full jalousie-to-impact casement conversions on an older concrete block home usually fall between $1,200 and $2,800 per opening. Architectural SDL grilles add $150 to $400 per window depending on pattern. Oversized glass panels for stilt homes or wide canal-front elevations start around $3,500 and can reach $12,000 or more for a large multi-panel system. We write fixed, line-item quotes. If we open a wall and find what we expected to find, your price doesn’t move. If we find something hidden, you approve the change in writing before we do the extra work. Call (754) 238-2201 for a free estimate on your specific openings.
We Also Serve Cities Near Key Largo
Our crews travel regularly from Key Largo down through Tavernier, up toward Homestead, and across to Key Colony Beach and Marathon. If you’re anywhere in the Upper or Middle Keys, Custom Windows & Doors in Key Largo service reaches your address with the same NOA-certified product lines and the same written warranty registration.
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
No. Every replacement window or door in Monroe County, including Key Largo, must be permitted and must carry a Miami-Dade Notice of Acceptance impact rating. Keeping hurricane shutters on the outside does not waive the NOA requirement on the window itself. The shutters protect the opening during a storm; they don’t change what the window has to be. Homes with non-NOA replacements get flagged during permit inspections, and unpermitted window work can also void your homeowner’s insurance or trigger non-renewal. If you’re unsure whether your existing windows are NOA-rated, call (754) 238-2201 and we’ll check the stamp and explain your options before you spend a dollar.
We prioritize insurance-driven replacements because we understand the clock you’re under. After we measure and confirm product availability, a standard jalousie-to-impact casement replacement in Key Largo can typically be scheduled within two to four weeks. Custom shapes or oversized panels may take longer because the units are built to order. The best move is to call (754) 238-2201 the day you get the non-renewal notice. We’ll schedule the walkthrough immediately, quote the work, and get the permit and product order moving fast. Estimates are free.
In most cases, no. Once the aluminum frame on a custom shape window shows significant pitting, corrosion, or structural weakening, rebuilding it in place doesn’t restore the window’s integrity or its NOA rating, and it won’t satisfy a building inspector. We replace the full frame with a new NOA-certified custom unit, using marine-grade finishes and stainless fasteners that resist the two-sided salt exposure Key Largo creates. We can also preserve the original opening’s shape exactly, so your radius or angled window looks the way the house was designed to look. Call (754) 238-2201 and we’ll quote the replacement with actual numbers.
Possibly, and we tell you this before we touch anything rather than after. When we open the walls around original jalousie or double-hung windows on older Key Largo homes, we often find corroded framing, failed flashing tape, or outdated wiring buried in the cavity. If the exposed framing is undersized or salt-eaten, the permit holder is responsible for bringing that connection up to code before the new window goes in. We inspect first, write a realistic allowance into the contract for what’s likely, and if we find something beyond the allowance, we price it and get your written approval before doing the work. That’s the way we’ve always done it in Key Largo. It’s the only way that makes sense in a house that’s been standing in salt air for sixty years.
Yes. Oversized glass panels on elevated stilt homes in Key Largo are subject to the same HVHZ wind speeds as standard windows, but because the panels are larger and often located on exposed canal-front or ocean-facing elevations, they carry higher design wind pressures and stricter deflection limits. The NOA rating has to match the specific product dimensions and the elevation’s exposure category. Larger panels also require heavier framing and sometimes laminated glass with thicker interlayers than a standard casement. We specify oversized panels for Key Largo stilt homes based on the exact opening, exposure, and elevation, not a catalog price. Call (754) 238-2201 with your panel dimensions and we’ll write a quote that’s correct for your specific site.
If you’re ready to replace jalousies before your insurer makes the decision for you, or you need Key Largo door installation or a custom window that actually fits your home and the code it has to live under, call TruePane Windows & Doors at (754) 238-2201. We’ll schedule a free walkthrough, measure every opening twice, and put the numbers on paper. Done right, in writing, before the truck leaves your driveway.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key Largo and the Florida Keys with NOA-certified custom windows and doors.
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.



Before
After
Before
After
Before
After