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Before
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Before
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Before
AfterFast, Reliable Window Replacement Across Key West
Window replacement in Key West is not a standard Florida job. It is the only city in the state where a single window must clear Monroe County’s 180+ mph impact-glazing code and pass a Historic Architectural Review Commission hearing that cares about mullion width, lite pattern, and finish color as much as wind-load math. We have worked both sides of that coin on Conch houses from Bahama Village to the Casa Marina district, and we know what gets approved the first time. Call (813) 320-9346 and a live person answers, 24/7. We will walk you through the permit path before you spend a dollar.
Why TruePane Windows & Doors Is Key West’s Preferred Window Replacement Company
TruePane has been doing window and door work in Key West for years, under a rule Dale Kessler wrote on the whiteboard in 2008: if the pane is not true, the job is not done. That rule carries extra weight here, where a window has to hold a 180 mph wind load and still look like it has been in the wall since 1920. Our technicians are background-checked and uniformed, and they measure every opening twice. They quote manufacturer lines side by side on paper, so you see exactly what you are buying: Andersen, Pella, Marvin, PGT, CGI, and more. Both warranty layers get registered in writing before our truck leaves your driveway. That is The Keystone Standard, and we do not skip it on any job, anywhere.
Key West homeowners call us because the work holds up. We have replaced impact units on Simonton Street that out-of-town crews installed and HARC rejected for the wrong divided-lite pattern. We have pulled corroded builder-grade hardware out of frames three years old on White Street and put marine-grade stainless back in. We are not the cheapest bid in the room. We are the last call you need to make.
Our Window Replacement Services in Key West
Full Frame Replacement
Full frame replacement in Key West means pulling the entire existing unit, frame and all, down to the rough opening. On an old Conch house, that opening is rarely square. Dade County pine framing settles, piers shift, and the original sash from 1910 was not built to any modern tolerance. We re-square, re-flash, and set the new frame so the operate is true. A full frame replacement on a typical Key West wood-frame home runs $1,400 to $2,800 per opening depending on the product line and whether the home falls under HARC review. Impact-rated full frame units with wood interiors and aluminum-clad exteriors sit at the upper end of that range and make up most of what we install in Old Town.
Insert Window Replacement
Insert replacement, sometimes called pocket replacement, keeps the existing frame in place and sets a new window inside it. This matters in Key West’s historic districts because HARC often prefers the original frame profile remain. But the insert still has to carry an impact rating that meets Monroe County code if the opening is glazed area subject to wind-blown debris. A typical impact-rated insert for a Key West home runs $900 to $1,900 per opening, installed. The price depends on the manufacturer, whether simulated divided lites are required, and whether the existing frame is sound enough to accept a new unit without re-flashing. We will tell you honestly if your frame has salt corrosion at the sill and is better off replaced entirely.
Storm Window Replacement
When the job is about the storm season, not aesthetics, storm window replacement is the direct answer. Key West sits in the highest wind-speed zone Monroe County has, and a window that meets Florida Product Approval for 180+ mph design loads is the minimum, not an upgrade. A storm-rated replacement in Key West runs $1,100 to $2,400 per window, with the spread driven by frame material, glass package, and whether HARC has to review the lite configuration. We pull the standard building permit and the HARC permit side by side, so inspection does not stall. That dual-permit habit is the single biggest difference between a Key West window job done right and one torn out and redone.
Energy-Efficient Upgrade
Energy efficiency in Key West is not about winter heating bills. It is about solar heat gain through the glass, what the A/C has to fight from April through October. A low-E, argon-filled impact unit installed on a Fleming Street cottage can cut the cooling load measurably. Expect to pay $1,200 to $2,600 per opening for an energy-efficient upgrade with impact rating, installed, depending on frame material and glass package. For older homes with jalousie windows, replacing louvered glass with a sealed, rated, energy-efficient unit is often the single fastest way to get a premium reduction from your carrier and get the house cooler at the same time.
What happens when you call
- 1
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 West
We are an authorized installer for more than a dozen manufacturer lines, and the ones that matter most in Key West are the impact-rated lines: PGT and CGI anchor our storm work, while Andersen, Pella, and Marvin carry the wood-interior profiles HARC wants to see on contributing historic structures. We keep a working stock of marine-grade stainless hardware, corrosion-resistant finishers, and glazing-rated seals for Key West’s salt air, ordered ahead so jobs do not stall waiting on a part from the mainland. If you have a window that has failed under warranty, we service it whether we installed it or not.
Our Window Replacement team has spent years matching manufacturer product approvals to HARC and Monroe County requirements, so you are not left doing the paperwork yourself.
Common Window Replacement Problems We See in Key West Homes
- Salt-spray corrosion of hardware and frames. Key West is surrounded by saltwater, and zinc or uncoated aluminum hardware fails in three to five years. We spec marine-grade stainless as the baseline on every coastal install, not an upcharge.
- HARC rejection of modern impact units. An out-of-town crew installs a window that passes wind-load testing, but the commission rejects it for wrong divided-lite configuration or mullion width. That is a tear-out and redo. We pull HARC permits before we order the window.
- Jalousie windows that insurance refuses to cover. Louvered glass panels are essentially unrated for hurricane protection, and carriers in Monroe County increasingly will not write or renew policies on homes that still have them. Impact-rated replacement is the fix.
- Premature insulated glass seal failure. Glazing that is not rated for 180+ mph wind-driven rain and salt fog loses its argon and fogs between panes early. We install units rated for the wind load and the salt exposure, and we register the warranty in writing so a failed seal is covered.
Pricing for Window Replacement in Key West, FL
Window replacement in Key West runs $900 to $2,800 per opening installed, depending on the product line, frame material, impact rating, and whether the home is subject to HARC review. A full frame impact replacement with wood interior on a historic Old Town home sits at the upper end, around $2,400 to $2,800. An impact-rated insert in a newer home on Stock Island might run $1,100 to $1,600. Historic window restoration work bills by the opening and the extent of wood repair, typically $800 to $1,800 per sash. Every quote we write is line-item, in writing, with both warranty layers registered before the truck leaves. No surprise line items on the bill, no second appointment left hanging. Call (813) 320-9346 for a free estimate on your exact openings.
Key Takeaways
- Key West requires impact-rated glazing with Florida Product Approval for 180+ mph design loads, and HARC review on historic structures.
- We pull HARC permits and building permits side by side, so the job does not stall at inspection.
- Marine-grade stainless hardware and corrosion-resistant finishes are baseline specs here, not upgrades.
- Every job gets The Keystone Standard: both warranty layers registered in writing, with a 90-Day Done Right Promise behind it.
- A live person answers (813) 320-9346, 24 hours a day, 7 days a week. No voicemail tree.
We Also Serve Cities Near Key West
Beyond Key West, our crews cover Key West proper and reach Big Pine Key, Marathon, Key Colony Beach, and Tavernier on regular scheduling. If you are anywhere in the lower Keys, call (813) 320-9346 and we will let you know when we can be there and what the estimate covers.
Serving Key West, FL - Our Local Coverage Area
We’re based in the Key West 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 Key West
Yes. Any replacement window on a contributing historic structure in Old Town Key West requires Historic Architectural Review Commission sign-off, even if the opening size is unchanged. HARC reviews the mullion width, lite configuration, and finish color against the original character of the house. A window that reads modern from the street can be rejected and ordered redone. We pull the HARC permit alongside the building permit, before the window is ordered. Call (813) 320-9346 and we will tell you what your specific house requires.
Key West replacement windows must carry a Florida Product Approval for a design wind load of 180+ mph, placing the island in Monroe County’s highest wind-speed zone. Miami-Dade County has similar high-velocity requirements, but the enforcement pattern in Key West is different because HARC adds a preservation review layer that Miami’s newer housing stock typically does not trigger. Both the wind-load approval and the historic profile must be present on the same unit or the inspection fails. Call (813) 320-9346 for an exact quote on units that satisfy both.
Jalousie windows are louvered glass panels that cannot be rated for hurricane impact, and they let wind-driven rain straight into the house. Monroe County carriers increasingly refuse to write or renew policies on homes that still have them. Replacing jalousies with sealed, impact-rated units is the single fastest way to make the home insurable, and most carriers acknowledge a documented impact window installation, complete with product approvals and permits, with a premium credit. We provide the documentation your carrier wants. Call (813) 320-9346 to talk through your specific openings.
No. Painting the frame does not change what HARC reviews. The commission judges mullion width, lite pattern, and frame profile against the original character of the structure. A standard aluminum impact unit with a wide mullion and single-light lite pattern will often read wrong from the street, and paint does not correct that. What works is an impact unit with a wood interior or aluminum-clad exterior built with simulated divided lites and a mullion profile that matches the original fenestration. We quote those side by side against standard units, so you see the difference on paper. Call (813) 320-9346 for a free estimate.
HARC review typically adds two to four weeks to a Key West window replacement project, depending on the commission calendar and whether staff-level approval applies or a full hearing is required. A standard impact-only install elsewhere in Florida can be ordered and installed within days. In Key West, we order the window after HARC sign-off, because ordering before approval risks buying a unit the commission rejects. That wait is built into our schedule and our quotes, so there are no surprises. Call (813) 320-9346 and we will give you a realistic timeline for your house.
Contact TruePane Windows & Doors
If you need window replacement in Key West, call (813) 320-9346. We will schedule your free estimate, walk the openings with you, and give you a line-item quote in writing, with both warranty layers registered before the truck leaves the driveway. No paperwork fights, no arguing about coverage. The 90-Day Done Right Promise means if it is not done right, we make it right. That has been the standard on every job since Dale Kessler started TruePane, and it is the standard on every Key West home we touch.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key West, FL and the lower Keys with impact-rated, HARC-compliant window replacement done right.
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.