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AfterFast, Reliable Window Installation Across Key West
Window installation in Key West runs anywhere from $850 for a straightforward single-hung replacement to $4,200 and up for a HARC-compliant impact casement on a contributing Old Town home. The spread comes down to one thing most out-of-town crews learn the hard way: Key West is the only city in Florida where you satisfy the state’s toughest hurricane glazing code and a preservation board that rejects units that “read wrong” from the street. TruePane has been navigating both layers for years, and our crews know the difference between a Duval Street Victorian and a New Town ranch before they park the truck. Call (813) 320-9346 and you’ll talk to a live person, not a voicemail tree.
Why TruePane Windows & Doors Is Key West’s Preferred Window Installation Company
We’re a second-generation glazier’s shop, not a franchise that parachutes in from the mainland. 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’s why background-checked, uniformed technicians measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers before the truck leaves your driveway.
Our Key West customers tend to be people who’ve lived in their homes for twenty or thirty years and plan to stay longer. They’ve heard the pitch before. What they want is a company that shows up when it says, writes the HARC permit into the contract, and doesn’t argue about the 90-Day Done Right Promise. The Keystone Standard means both manufacturer warranty layers are registered in writing, durations stated, and our workmanship is guaranteed for 90 days with no paperwork fights. A live person answers our phone 24 hours a day, seven days a week. Dispatch and scheduling for Key West are coordinated from our Miami office, but crews live and work in the Keys.
Our Window Installation Services in Key West
Every Window Installation job in Key West starts with the same question: is this house in a HARC historic district, and what does the commission need to see before we order glass? Our services below all account for that first step.
Casement Windows
Casement windows are the workhorse of Key West impact retrofits. They seal tighter than double-hungs under wind load, and fusion-welded frames with marine-grade stainless hardware hold up to salt spray far better than standard aluminum. On Old Town contributing structures, we spec true divided lites and period-appropriate finish colors so the HARC review goes through the first time, not the third. A typical HARC-compliant impact casement in Key West runs $1,400-$3,800 per opening depending on size and glass package.
Awning Windows
Awning windows fit Key West’s low-slung Conch cottages and elevated wood-frame homes particularly well. They hinge at the top and open outward, which means they shed rain even when left cracked open during a passing squall. Our installers in Key West frequently pair awnings above kitchen sinks or along porch enclosures where operators need to survive constant salt air. Most Key West awning installs land between $950 and $2,600 per unit installed.
Fixed & Picture Windows
Fixed and picture windows offer the highest impact ratings for the money because there are no operators to fail. In Key West, where 180+ mph design loads are the baseline in Monroe County’s wind zone, a well-anchored fixed unit gives you maximum glass area without compromising the envelope. We install them in Old Town living rooms, New Town waterfront ranches, and elevated homes on Big Pine Key alike. Expect $800-$3,200 depending on glass size and whether the opening needs structural reinforcement.
Single & Double Hung
Single and double hung windows respect the proportions of the original Conch-style wood sash homes that line Key West’s historic streets. But wood sashes in salt air are a losing battle without marine-grade hardware and proper flashing. We retrofit older openings with wood-clad or aluminum-clad double hungs that meet HARC visual standards while carrying impact ratings the original single-pane sashes never had. A true retrofit on a Key West wood-frame home typically runs $1,100-$2,900 per opening, with framing repairs priced separately and in writing before work begins.
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.
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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’re an authorized installer for more than a dozen manufacturer lines, and in Key West we lean hardest on the ones that hold up to salt and wind: Andersen, PGT. Those three keep marine-grade hardware options and impact-rated glazing packages in stock without the long lead times homeowners dread. When you call for a quote, we bring manufacturer line cards and put the numbers side by side on paper, so you see exactly what you’re buying. Parts for Key West service calls are staged locally where possible. We don’t leave a homeowner with a tarp on their window for two weeks waiting on a truck from Georgia.
Common Window Installation Problems We See in Key West Homes
- Jalousie windows that insurers won’t cover. Louvered glass jalousies are the single most common replacement trigger in Key West. They carry essentially no hurricane rating and salt clogs the operator mechanisms within a few years. Carriers know this, and many now refuse coverage until they’re gone.
- Hidden framing rot behind original sashes. Old Town Dade County pine jambs look fine until the sash comes out. Salt intrusion and decades of condensation leave undersized, corroded framing that won’t anchor an impact unit. We inspect before we quote and write the framing allowance into the contract so there are no surprise line items on the bill.
- HARC rejections on modern aluminum units. An out-of-town crew quotes a standard impact slider, pulls only the building permit, and waits. HARC rejects the mullion width, the lite pattern, or the finish color. The job stalls for weeks. We pull the HARC permit alongside the building permit from day one, and we spec to pass.
- Zinc flashing and standard hardware corroding within three years. Salt spray in Key West pits aluminum, seizes hardware, and fails seal adhesives years faster than inland. A window installed with mainland-grade flashing and screws will pass its first inspection and fail the next wind-load check. We spec marine-grade stainless and corrosion-resistant finishes as baseline, not upgrade.
Pricing for Window Installation in Key West, FL
Here are honest numbers for the Key West market. A simple single or double hung replacement in New Town runs $850-$1,900. An impact-rated casement with HARC approval in Old Town runs $1,400-$3,800. A full jalousie-to-impact conversion with framing repair and finish matching often lands between $4,000 and $9,000 per home, depending on how many operators and how much the opening needs rebuilt. What moves a quote: HARC review time, hidden framing rot, glass package (low-E impact adds roughly 18-25%), and whether the house is elevated on piers. We give free estimates, and every quote is a fixed price with the framing allowance written in before you sign. Call (813) 320-9346 and we’ll schedule yours.
| Job Type | Typical Key West Price Range |
|---|---|
| Single/Double Hung Replacement | $850-$1,900 |
| HARC-Compliant Impact Casement | $1,400-$3,800 |
| Awning Window Install | $950-$2,600 |
| Fixed/Picture Impact Unit | $800-$3,200 |
| Jalousie-to-Impact Full Conversion | $4,000-$9,000+ |
We Also Serve Cities Near Key West
Our Key West crews regularly run jobs up the Overseas Highway through Big Pine Key, Marathon, Key Colony Beach, and Tavernier. If you’re located anywhere along the Lower and Middle Keys, the same Window Installation in Key West team can handle the estimate, the permit paperwork, and the install. Same 90-Day Done Right Promise. Same live person on the phone.
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 Installation in Key West
A HARC permit adds roughly $200-$600 in review fees and typically two to six weeks to the timeline for contributing historic structures, depending on the commission’s meeting calendar. Yes, it applies to most Old Town work, even like-for-like swaps. The alternative is skipping it and having the job red-tagged mid-install. Call (813) 320-9346 and we’ll tell you up front whether your address triggers HARC review.
Jalousie windows have essentially no hurricane rating and their louvered glass panels warp, stick, and corrode in salt air within a few years. Insurance carriers increasingly refuse to renew policies on Key West homes that still have them. We convert jalousies to HARC-compliant, impact-rated casements or fixed units with the louvered look some owners want, but with real wind-load performance. Call for a free estimate.
In our experience, the rough opening in an Old Town Conch house is usually undersized for modern impact anchoring, and the original Dade County pine jamb is often salt-rotten or termite-touched. That’s why we pre-inspect, write a framing allowance into the contract before demo, and get written sign-off on any added scope before we touch it. No surprises on the bill. No second appointment left hanging. Call (813) 320-9346 to schedule a pre-inspection.
No, you do not have to use solid wood. HARC’s standard is visual replication, not material purity. We regularly install aluminum-clad wood units and high-end clad casements that carry impact ratings while matching the mullion width, divided lite pattern, and finish color HARC wants to see. The key is submitting the right spec the first time. Call us and we’ll walk your specific street through what passes.
With standard mainland aluminum hardware and zinc flashing, visible pitting and seal degradation typically show up within two to three years on Key West. With marine-grade stainless hardware, fusion-welded frames from brands like PGT or and corrosion-resistant flashing, you should get fifteen to twenty years of clean operation. The materials are the difference, and we spec them as baseline. Call (813) 320-9346 for a quote that shows the hardware grade in writing.
If you’re ready to replace jalousies, retrofit old wood sashes, or spec impact windows that pass HARC the first time, call (813) 320-9346. The estimate is free, the pricing is fixed, and the warranty is in writing before the truck leaves the driveway. We’ll be there when we say.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key West and the Florida Keys with impact-rated window and door installations.
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.