Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across Duck Key
Window replacement in Duck Key is not a mainland job. Every structure on this island sits in Monroe County’s mandatory impact-resistant glazing zone, with design wind speeds exceeding 150 mph and saltwater on all sides. Whether your home is a stilt house off the Hawks Cay Resort corridor or a concrete-block build near the marina, the windows you install here answer to a different set of rules than they would in Orlando or Altamonte Springs, which is why Energy-Efficient Windows in Duck Key require specialized expertise. TruePane Windows & Doors has been setting windows in South Florida since 2008, led by second-generation glazier Dale Kessler. If you’re pricing out replacement windows on Duck Key, call (954) 280-4413 for a straight answer and a free estimate.
Why TruePane Windows & Doors Is Duck Key’s Preferred Window Replacement Company
We’re not the cheapest bid you’ll get for window replacement in Duck Key. We’re the company Duck Key homeowners call when the first bid left them with a fogged seal and a door that binds in July. That matters here more than anywhere, because the island’s constant salt-laden wind punishes hardware and frames that a mainland installer would call acceptable. Our local crews know the difference between a window that looks fine and a window that has already lost its impact rating to ghost corrosion.
Every Duck Key job starts with a live person answering the phone, 24 hours a day, 7 days a week. No voicemail tree, no callback form, no regional call center. You’ll speak to someone who can actually talk about FEMA flood-zone elevations, marine-grade anodizing, and why powder-coated hardware is not optional on this island. Our background-checked, uniformed technicians measure every opening twice. Both manufacturer warranty layers are registered in writing before the truck leaves your driveway, per The Keystone Standard. If the pane is not true, the job is not done.
We stand behind the work with a Done Right Promise. No paperwork fights, no arguing. That promise has been held up on Duck Key stilt homes, concrete-block vacation properties, and custom builds near the water with Glass Railing Systems - Duck Key included on many projects for years. We plan to be in town in thirty years, not thirty days.
Our Window Replacement Services in Duck Key
Window replacement on Duck Key falls into a few clear categories. Here’s what we actually do, and how each one plays out on this island specifically.
Full Frame Replacement
Full frame replacement means removing the entire existing window down to the rough opening and installing a new, complete unit. On Duck Key, this is often the only sane option. Elevated stilt homes flex under hurricane-force wind, and the original window frames – many installed in the post-Irma rebuild rush – were not always set with marine-grade flashing. We pull the old unit, inspect the subsill, and install an impact-rated replacement with proper sill pan flashing and backer rod details that handle wind-driven saltwater. Our Window Replacement crews do this work regularly on concrete-block and wood-frame openings alike.

Insert Window Replacement
An insert replacement fits a new window inside the existing frame. It’s faster and less invasive, but it’s only right when the existing frame is structurally sound. On Duck Key, that’s an honest conversation we have on nearly every job because the salt air hides frame damage. If the exterior frame has lost its anodized coating or the jamb shows white oxidation powder, an insert is not a code-compliant repair. We’ll tell you that on the first visit, in plain language, before you spend a dollar.

Storm Window Replacement
Storm window replacement on Duck Key carries a different meaning than it does on the mainland. Here, the “storm window” is the impact-rated glazing itself, not an added exterior layer. When a hurricane-tested impact unit’s outer pane has been compromised by debris or its laminated interlayer is aging, you need that specific sash replaced with a matching marine-grade unit. We stock common impact sash sizes locally and can match most Duck Key openings without a four-week wait.

Energy-Efficient Upgrade
Duck Key air-conditioning bills run for most of the year, and a house that leaks conditioned air through failed seals is paying a salt-corrosion tax on top of its electrical bill. Energy-efficient upgrades here almost always pair low-E impact glass with argon fill, but the truth is the U-factor only performs as designed when the seal is intact. In the Middle Keys, seal failure from wind flex on stilt homes is common even when the interior pane shows no fogging. We test, we replace, and we register the warranty for the full unit so you’re not paying twice. For our neighbors in Duck Key, this is the upgrade that pays back fastest.

Historic Window Restoration
A handful of older Duck Key properties – post-Donna concrete-block builds from the early 1960s – have window openings sized to original jalousie or awning units that modern manufacturers no longer stock. We handle these as restoration jobs, rebuilding jambs to accept modern impact-glazed sashes that preserve the original sightlines while meeting Monroe County code. Dale Kessler has kept the old jalousie jig jigs in the shop for exactly this kind of work.

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 Duck Key
TruePane is an authorized installer for more than a dozen manufacturer lines, including, PGT, CGI, and ES Windows. For Duck Key specifically, we lean on CGI and ES Windows for their marine-grade powder-coating and heavy anodizing, and ECO Window Systems when the architect has spec’d a specific coastal finish on a high-end build. We quote manufacturer lines side by side on paper so you see exactly what you’re buying, and we stock common replacement parts and sashes locally so Duck Key customers aren’t waiting on a freight truck from the mainland.
Common Window Replacement Problems We See in Duck Key Homes
- Ghost corrosion. The exterior frame and hardware oxidize from constant salt-laden wind while the interior glass stays perfectly clear. The window looks fine from inside, but the impact rating is already gone. We see this on Duck Key more than any other issue, especially on absentee-owned vacation homes that go months between inspections.
- Storm-driven seal failure. Elevated stilt homes flex when hurricane-force wind hits, breaking the glazing seal. Argon fill escapes, the U-factor spikes, and the owner never sees fogging because the interior pane faces climate-controlled air. You won’t know until your electric bill climbs.
- Improper flashing tape on stilt elevations. Non-marine flashing degrades in salt air within about a year. The tape peels, wind-driven rain reaches the jambs and sashes, and the subsill rots on concrete-block openings. We replace with marine-grade flashing and asphalt sill dams on every Duck Key job.
- Custom-height door units. Many Duck Key homes sit on elevated fill or stilts to meet FEMA flood-zone requirements, so entry doors and adjacent windows are not standard heights. Off-the-shelf units don’t fit. We order custom-height impact-rated units and build the sill flashing to match the elevation certificate.
Pricing for Window Replacement in Duck Key, FL
Straight numbers, in writing, before we order a single sash. A standard impact-rated insert window on Duck Key – roughly 36 by 60 inches, single opening, no rot repair – typically runs $900 to $1,400 installed. A full frame replacement on a concrete-block opening with marine flashing and stilt-elevation sill work runs $1,800 to $2,800 per opening. Custom-height impact door units with adjacent sidelights, which most elevated Duck Key entries require, start around $3,500 and run to $6,000 or more depending on sizing and finish. Historic restoration work on 1960s-era openings is quoted per opening after we open the jamb and see what’s behind it, but plan for $1,500 to $3,000 per window.
What moves the price on Duck Key more than anything is the long-lead custom sizing. Standard sizes we can often pre-order from local stock. Custom heights are built to order, and the manufacturer’s lead time is what it is. We fix the price in writing before the order goes out, so you’re never surprised by a change order when the truck shows up. Call (954) 280-4413 for an exact quote on your openings – estimates are free.
We Also Serve Cities Near Duck Key
If you’re on Duck Key or nearby, we cover the surrounding area for window replacement. That includes Window Replacement in Duck Key and the neighboring communities of Acacia Villas, Alafaya, Altamonte Springs, and Altoona. Same crews, same Done Right Promise, same live person on the phone at (954) 280-4413.
Serving Duck Key, FL - Our Local Coverage Area
We’re based in the Duck Key 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 - Window Replacement in Duck Key
Duck Key window replacements run on longer lead times because most openings on stilt and elevated homes require custom-height impact-rated units, not stock sizes. Manufacturers build those to order, and the lead time is typically three to five weeks after we lock the measurements and material finish. Labor is not the bottleneck. The custom factory order is. We fix the full scope and price in writing before the order goes out, so the schedule is set before the first material is pulled. Call (954) 280-4413 and we’ll give you a realistic delivery window on your specific openings.
No. Monroe County’s building code requires impact-rated, marine-grade window and door systems on Duck Key, not standard impact windows built for mainland conditions. Standard impact units from a mainland distributor typically use thinner anodizing and non-marine hardware that corrodes within two to three years in this salt-laden wind. They will also not pass a Duck Key permit inspection if the hardware finish and frame rating are not marine-specified. Our Duck Key jobs are quoted with marine-grade CGI, ES Windows, or equivalent coastal-rated products, in writing, with both warranty layers registered before we leave the driveway.
Ghost corrosion is the failure mode where the exterior window frame and hardware oxidize from constant salt-laden wind while the interior panes stay clear and the unit looks fine from inside. On Duck Key, we see this most on absentee-owned vacation homes that sit empty for entire seasons. The owner arrives, looks at the windows from the inside, sees no fogging, and assumes everything is fine. Meanwhile the exterior frame has lost its anodized coating and the impact rating is compromised. If you own a Duck Key vacation property, have the exteriors inspected at least once a year. Call (954) 280-4413 and we’ll check the units while we’re out for the estimate.
On Duck Key, most structures are elevated to meet FEMA flood-zone requirements, which means entry doors and adjacent windows are above standard sill heights. We build the sill flashing to match your elevation certificate, not a stock detail from a mainland playbook. That means custom-height impact-rated door units, deeper sill pans, and backer rod that handles standing water during storm surge. We pull permits on every Duck Key job and the inspection passes the first time. If your previous installer skipped the elevation detail, we’ll find it when we open the wall. Call (954) 280-4413 for a straight answer on your specific property.
Yes, but only if the glazing seal holds. On Duck Key, wind flex on elevated stilt homes breaks seals more often than homeowners realize, and the argon fill escapes without any visible fogging on the interior side. The U-factor quietly spikes and your air-conditioning bill climbs with it. A properly installed, marine-grade impact window with low-E glazing and intact argon fill will cut the solar heat load meaningfully in an island climate where the AC runs most of the year. But you need a company that tests the seal, registers the warranty, and stands behind it when the salt air finds the next weak point. That’s what we do. Call (954) 280-4413 to schedule a free estimate on your Duck Key windows.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Duck Key with impact-rated window replacement and installation.
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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