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Before
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Before
AfterFast, Reliable Window Replacement Across Key Largo
Window replacement in Key Largo is not the same job it is in Homestead or Tavernier. Every single opening on this island, even an interior bedroom window, falls under Florida’s High Velocity Hurricane Zone code. That means a Miami-Dade Notice of Acceptance impact rating is not optional and there is no inland exemption anywhere in Key Largo. Call us at (813) 320-9346 and we will walk you through what your house actually needs, opening by opening.
Our crews know the canal-front subdivisions, the stilt houses on Buttonwood Sound, and the concrete block homes along Ocean Bay Drive. We schedule work around the wind, the tide, and the Monroe County permit office, not the other way around. Dale Kessler founded this company on one rule: if the pane is not true, the job is not done. That rule governs every window we set in Key Largo.
Why TruePane Windows & Doors Is Key Largo’s Preferred Window Replacement Company
We have pulled more rotted, corroded aluminum sashes out of Key Largo homes than we can count. The aluminum frames on older canal-front houses, especially in subdivisions like Buccaneer Point and Ocean Isle Estates, oxidize from both the Atlantic side and the Florida Bay side at the same time. That dual salt-spray exposure is something a mainland contractor simply does not see on a Miami-Dade tract house. We do, because we work here every month.
Our technicians are background-checked, uniformed, and trained on marine-grade hardware the way a second-generation glazier teaches an apprentice. We measure every opening twice. We quote manufacturer lines side by side on paper, so you see exactly what you are buying and what it costs. Most window replacement jobs in Key Largo are completed in a single visit.
When a homeowner in Tavernier or Key Largo calls, a live person answers. Not a voicemail tree. Not a callback form. We answer the phone 24 hours a day, seven days a week, because a broken window on a barrier island is not a problem that waits for business hours.
Our Window Replacement Services in Key Largo
Full Frame Replacement
A full frame replacement in Key Largo means pulling the entire old window, frame and all, down to the rough opening. On stilt houses built in the 1960s and 1970s, those rough openings are rarely square and never standard. We shim, flash, and set the new unit so it drains properly in wind-driven rain. A typical full frame replacement for a standard bedroom window in Key Largo runs $750 to $1,400 per opening, including the Miami-Dade NOA-certified impact unit.
Insert Window Replacement
If the existing frame is sound and square, an insert replacement keeps the original frame and sets a new impact-rated sash inside it. This works well on concrete block homes throughout Key Largo where the outer frame is still holding. Expect $600 to $1,100 per opening for a common size. The catch on a saltwater island is that the original frame is often not sound, and an insert over a corroded frame is money thrown at a problem that returns in three years.
Storm Window Replacement
Storm windows in Key Largo are not an accessory. They are the legal requirement. Every replacement storm window or storm door must carry a Miami-Dade NOA impact rating. We install impact-rated storm windows over existing non-compliant units on homes where the owner is upgrading in stages. Pricing runs $450 to $850 per window, depending on size and whether the existing frame accepts the new track.
Energy-Efficient Upgrade
Key Largo’s humidity averages above 75% year-round, and the air conditioning runs about eleven months out of twelve. Low-E coated impact glass with argon fill cuts the solar heat gain off the water and keeps the interior glass surface from sweating. An energy-efficient upgrade on a typical three-bedroom Key Largo home runs $8,500 to $18,000 for the full package, and the difference shows up on the FPL bill within the first summer.
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 PGT, CGI, and Simonton, among more than a dozen manufacturer lines. On Key Largo, we lean toward PGT and CGI impact units because they hold Miami-Dade NOA approvals across the widest range of sizes, including the oversized sliding door openings that show up in every canal-front house. We register both manufacturer warranty layers in writing before the truck leaves your driveway. That is The Keystone Standard, and we do not skip it.
Common Window Replacement Problems We See in Key Largo Homes
- Aluminum frame oxidation from dual-side salt spray. Canal-front homes in Key Largo sit between the Atlantic and Florida Bay. Aluminum sash tracks oxidize within three to five years, bind, and refuse to lock.
- Rusted hardware on elevated stilt houses. FEMA flood rules force Key Largo homes up on pilings, putting the windows directly in the salt-laden wind. Non-marine-grade stainless hardware rusts within months.
- Hardened foam weatherstripping and fogged glass. Year-round humidity above 75% hardens foam seals, which crack and let salt air reach the insulated glass unit. Argon leaks out, the seal fails, and the glass fogs permanently.
- Corroded 1970s sliding glass doors. The oversized aluminum sliders installed throughout Buccaneer Point and Ocean Isle Estates are now so corroded that panels no longer lock or seal. Monroe County requires a full permitted replacement with an impact-rated unit, not a glass swap.
Key Takeaways
- Every window replacement in Key Largo legally requires a Miami-Dade NOA impact rating.
- Dual saltwater frontage corrodes aluminum frames and steel hardware faster than mainland Miami-Dade.
- Marine-grade materials cost more upfront and far less over ten years.
- We register both warranty layers in writing before we leave.
- Free estimates. Call (813) 320-9346.
Pricing for Window Replacement in Key Largo, FL
A standard impact-rated window replacement in Key Largo runs between $600 and $1,400 per opening, depending on size, frame type, and whether it is a full frame or insert job. A 12-foot sliding glass door replacement, the kind that dominates canal-front living rooms, runs $4,500 to $8,500 installed with a Miami-Dade NOA-certified fusion-welded vinyl frame and stainless steel rollers. The coastal-grade materials, the marine hardware, the butyl tape flashing, and the sill pan all add cost over an inland job. That cost is real and it is worth paying once instead of twice.
Full frame replacement on a three-bedroom Key Largo home typically runs $12,000 to $22,000, depending on the number of openings and whether the house is on pilings or slab. Elevated stilt homes cost more because scaffolding and access add labor. We give you a written, line-item quote before any work begins. The number on the quote is the number on the bill. Call (813) 320-9346 to schedule your free estimate.
We Also Serve Cities Near Key Largo
Our crews work the entire Upper Keys and southern Miami-Dade. If you are in Key Largo and need Window Replacement, we are already nearby. We also serve Tavernier, Homestead, Key Colony Beach, and Marathon, with the same Keystone Standard on every job.
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 - Window Replacement in Key Largo
Yes. Every residential window replacement in Key Largo requires a Miami-Dade NOA-impact-rated unit, even on an interior bedroom. The entire island lies within the High Velocity Hurricane Zone, and no point is more than about a mile from either the Atlantic or Florida Bay, so there is no inland exemption. Call (813) 320-9346 for an exact quote on your openings.
Key Largo sits on a narrow limestone island with saltwater on both sides, so the air carries salt spray from the Atlantic and Florida Bay simultaneously. Aluminum oxidizes from both directions, sash tracks bind, and locks fail within three to five years. Mainland Miami-Dade homes typically face salt exposure from only one side, which slows the failure rate noticeably.
In most cases, no. Monroe County requires a full permitted replacement with a Miami-Dade NOA-certified impact unit when the original frame is corroded or non-compliant. If the frame on your 1970s aluminum slider is split or the panels no longer lock, a glass swap will not pass inspection and will not seal. Call (813) 320-9346 and we will tell you honestly whether the frame is worth saving.
Fusion-welded vinyl frames with stainless steel rollers and marine-grade hardware hold up best on Key Largo. Impact-rated laminated glass with Low-E coating and argon fill handles the UV, the salt, and the humidity. Aluminum, even with a factory finish, oxidizes on this island faster than anywhere else in Florida. We quote PGT and CGI side by side on paper so you see the difference before you commit.
Stilt houses require scaffolding, ladders, and extra labor time because the windows are elevated into the wind. The rough openings on 1960s and 1970s pilings are rarely square, which means more shimming and flashing. The materials are the same, but the labor and access cost run 15 to 25% higher. We give you a written line-item quote for your stilt house before work begins; call (813) 320-9346 for your free estimate.
What the Salt Air Decides
The single biggest variable in a Key Largo window replacement is not the schedule. It is the materials. Salt air does not negotiate. It eats aluminum frames from both sides, rusts steel hardware on elevated houses within a year, and hardens foam weatherstripping until it cracks open and floods the glass seal. We see this on nearly every older canal-front home we step into.
Take the 12-foot aluminum slider we pulled from a Buccaneer Point living room recently. The jamb had split. The panels would not lock. The homeowners had been living with a door that leaked wind-driven rain into the subfloor every summer. We pulled the entire non-compliant unit, flashed the rough opening with butyl tape, set the sill pan, and installed a Miami-Dade NOA-certified impact-rated sliding door with stainless steel rollers and a fusion-welded vinyl frame. The door now locks, drains, and seals. That is the difference between replacing a window and replacing it right.
On Key Largo, the cheap spec costs more within a decade. A factory-finished aluminum frame with standard hardware will oxidize and bind within five years. Marine-grade vinyl with stainless hardware will run twenty or more with basic care. The price gap on a full house of windows is usually $2,000 to $4,000. Spread that over the life of the windows and the cheap spec costs triple. We quote both numbers on paper and let you decide, but we will tell you what we would put in our own mother’s house if she lived on the water in Key Largo.
Schedule Your Window Replacement Estimate in Key Largo
If your windows are fogged, your sliders will not lock, or your frames are showing white oxidation powder, call us. We will walk the house with you, measure every opening twice, and give you a written line-item quote with the exact Miami-Dade NOA-compliant units we recommend. The estimate is free. The number on the quote is the number on the bill. Call (813) 320-9346 today.
Written by Dale Kessler, Owner at TruePane Windows & 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.