Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Sliding glass doors
Impact garage doorsPGTCGI
Before
After
Before
After
Before
AfterFast, Reliable Window Replacement Across Key Biscayne
Window replacement in Key Biscayne runs $1,800 to $4,100 per opening for a mid-range impact-rated unit with marine-grade hardware installed, and most full frame replacements on the island take 10 to 16 weeks from signed order to final install because of NOA-rated glazing lead times. That’s the honest math before you call anyone. Our crews serve Key Biscayne weekly and know the island’s salt-spray realities, its condo board approval processes, and its HVHZ permitting quirks better than any mainland operation. If you want a straight answer about your specific windows, call (754) 238-2201. You’ll get a live person, not a menu.
We’re Dale Kessler’s team at TruePane Windows & Doors. Dale founded this company in 2008 on a single rule that still governs every job: if the pane is not true, the job is not done. The work is coordinated from our South Florida office in Miami, and our uniformed, background-checked technicians work on Key Biscayne year-round. We do not rush through an island job because the salt air will expose a sloppy install inside of five years, and we intend to still answer the phone in thirty.
Why TruePane Windows & Doors Is Key Biscayne’s Preferred Window Replacement Company
Key Biscayne is a true oceanic barrier island, entirely encircled by saltwater. That is not a marketing line. Biscayne Bay sits to the west and the Atlantic to the east, so every window on the island, including interior-lot openings, gets hit with bidirectional salt spray from multiple compass points. Most mainland Miami-Dade contractors have never spec’d for that reality. We have. Our crews replace windows here regularly, and we order marine-grade hardware as the default on Key Biscayne, not as an upgrade line item. It changes which window brands we recommend and how we flash every opening, and it’s why our work on the island holds up when other installs start showing seal failure and jamb rot in three years.
We’re an authorized installer for, PGT, CGI, and ES Windows, and we write manufacturer warranty registrations before the truck leaves your driveway. The Done Right Promise covers our workmanship, and The Keystone Standard means both warranty layers are registered in writing with durations stated. No fine print that covers neither. Key Biscayne homeowners keep our number long after the job closes because on an island with this much salt in the air, the callback is always a possibility, and we still answer.
Our Window Replacement Services in Key Biscayne
Every one of these services is a regular part of our work on Key Biscayne. The island’s housing stock, largely built between the 1950s and the 1980s, means we see everything from original jalousie windows that predate Hurricane Andrew code to 1970s condo towers with craned-in unit restrictions. Here’s what the work actually looks like.
Full Frame Replacement
Full frame replacement is the norm on Key Biscayne, not the exception. Most of the island’s mid-century concrete-block homes and older condo units still carry original aluminum frames, and you cannot retrofit a modern NOA-rated impact unit into a 1960s jalousie opening and expect it to hold under HVHZ wind loads. We remove the old frame to the rough opening, rebuild the jamb and sill, and set the new unit plumb and true. On Key Biscayne, full frame replacement almost always means ordering marine-grade hardware and powder-coated frames, because the salt air will find any exposed aluminum within a few years.
Insert Window Replacement
Insert replacement, or pocket replacement, works when the existing frame is still square and structurally sound. On Key Biscayne that is less common than on the mainland because salt corrosion eats the original frames from the inside out. If your frames pass a true inspection, an insert job can save you labor and disruption. If they don’t, we’ll tell you straight and show you why a full frame replacement is the only way to get a window that will actually hold up out here. We measure every opening twice, and we will not cut a corner to make an insert fit where it shouldn’t.
Storm Window Replacement
Storm windows on Key Biscayne are not a seasonal accessory. During the June through November season, your storm window is the difference between a dry interior and a flooded living room when a squall pushes in off the Atlantic. We replace failed storm windows and storm doors with units rated for the Miami-Dade High Velocity Hurricane Zone, and we make sure the marine-grade weatherstripping and weep holes are right. If you have old single-glazed storm windows over original single-pane sashes, you’re running two weak layers instead of one strong one. We can spec a single impact-rated unit that does the job better.
Energy-Efficient Upgrade
Key Biscayne homeowners feel the same heat as everyone else in South Florida, but the island’s salt air adds an extra cost: energy-efficient glass packages with Low-E coatings need the right frame material and the right glazing seal to keep performing. We install insulated glass units with proper Low-E coatings and argon fills, but we also make sure the frame and hardware are marine-grade. An efficient window with corroding hardware is not efficient for long. The goal is a window that cuts your cooling load in July and still operates in October, five years from now, after five hurricane seasons of salt spray.
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 Biscayne
We are an authorized installer for more than a dozen manufacturer lines, including ES Windows, CGI, and ECO Window Systems. On Key Biscayne we write a lot of side-by-side quotes featuring ES Windows and CGI because both manufacturers build NOA-rated impact units that hold up to the island’s salt spray when paired with the right hardware upgrades. We also service and replace CWS windows and doors. Our relationship with the brands means we can order replacements with the exact specs your opening needs, and we register the manufacturer warranty in writing before we leave your driveway. No unregistered warranties. No later surprises.
Common Window Replacement Problems We See in Key Biscayne Homes
What follows are the failure modes we see most often on the island. Some are universal. Most are specific to Key Biscayne’s geography and housing age. If any of these sound familiar, call (754) 238-2201 and ask for a free estimate.
- Salt-seized hardware and sash balances. The original aluminum jalousie and single-pane sliding glass doors on the island’s 1950s to 1980s homes were never spec’d for marine exposure. We regularly find sash balances seized solid within a decade of installation, with weatherstripping crusted white from salt.
- Fogged or failing seals in pre-Andrew units. Older single-pane windows leak heat and don’t meet HVHZ impact codes, and any attempt to band-aid them with film or caulk fails when the first tropical storm pushes through. The fix is a full opening replacement with an NOA-rated unit.
- Condo board approval stalls that double the crane cost. Upper-floor units in the 1970s towers along Crandon Boulevard need custom-sized NOA-rated units craned in over the boulevard. Boards that approve replacements without a pre-permitting walk-through end up with bids that can’t be built or installed.
- Mismatched millwork and frame returns. Many Key Biscayne mid-century homes have original 1950s plaster returns around their windows. If the millwork and jamb extensions aren’t built to match, the job looks wrong and seals fail sooner. Our in-house millwork team builds those extensions to the original profile.
Pricing for Window Replacement in Key Biscayne, FL
A typical full frame replacement in Key Biscayne runs $2,200 to $4,100 per opening for a mid-range impact-rated unit with marine-grade hardware installed. Insert window replacement runs $1,600 to $2,800 per opening when the existing frame is still structurally sound. Storm window replacement runs $1,100 to $2,400 per unit. Energy-efficient upgrade packages, especially ones with Low-E coatings and argon fills in NOA-rated frames, add $300 to $600 per opening over a standard impact unit. Historic window restoration on mid-century jalousie homes is quoted per project after we measure the existing openings, because the millwork and glazing work varies so much from house to house. What drives the price on Key Biscayne is not labor. It’s lead time. NOA-rated glazing from manufacturers like ES Windows and CGI runs 10 to 16 weeks. Marine-grade stainless multi-point hardware is a line item. Condo crane days are a line item. We price every job in writing before ordering, so the number you sign is the number you pay. Call (754) 238-2201 for a free estimate, and we’ll walk you through the line items for your specific openings.
We Also Serve Cities Near Key Biscayne
Our Window Replacement team works across South Florida, and we regularly serve Key Biscayne along with Miami Beach, Miami, Coral Gables, and Hialeah. Each area has its own code and salt-air profile. If you’re comparing quotes in one of the nearby cities, we’ll give you the same spec-level detail we give our island customers.
Serving Key Biscayne, FL - Our Local Coverage Area
We’re based in the Key Biscayne 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 Biscayne
Because units on upper floors of the 1970s towers along Crandon Boulevard almost always require custom-sized NOA-rated impact units that must be craned in over the boulevard. That means a crane day, street or sidewalk closure permits, and a pre-permitting walk-through with the condo board. Mainland high-rises can often stage units through a freight elevator. On Key Biscayne, the crane is the only route. Add marine-grade hardware and powder-coated frames, and the per-unit cost runs noticeably higher than a comparable mainland job. Call (754) 238-2201 and we’ll give you an exact line-item quote for your building.
You can replace one window, but on Key Biscayne you’ll almost always need board approval first, and the board may require that the replacement match the existing line’s appearance and spec. If the building is a condo, the window is usually a common element, which means the association has a say in what goes in and how it’s installed. The practical issue is that ordering a single custom-sized NOA-rated unit matching the rest of the line may cost nearly as much per unit as replacing several at once, especially when craning and permitting are involved. Call (754) 238-2201 to talk through the specifics of your building.
Plan on 10 to 16 weeks. The factory lead time for NOA-rated impact units from ES Windows, CGI, and similar lines is 12 to 14 weeks on average, sometimes longer for custom finishes like bronze anodized frames or specialty glass tints. Shipping and then scheduling your install around a crane day adds another 2 to 4 weeks. If a contractor quotes you a four-week turnaround on custom Key Biscayne units, get it in writing and check the spec. Chances are they’re not ordering NOA-rated glazing. We order once the signed contract and deposit are in, and we lock every spec before we order so we don’t end up with mismatched millwork and extra crane-day charges. Call (754) 238-2201 for a realistic timeline for your openings.
Yes. Key Biscayne is a barrier island entirely encircled by saltwater, so even interior-lot homes receive corrosive airborne salt from both Biscayne Bay and the Atlantic year-round. That means marine-grade stainless multi-point locking hardware and powder-coated frames are not optional add-ons; they’re the minimum spec if the window is expected to last. Mainland Miami-Dade water-view properties may need the same, but inland mainland homes generally don’t. If you live on Key Biscayne, spec marine-grade hardware on every opening. Call (754) 238-2201 and we’ll explain what that means for the brands you’re comparing.
Most 1950s to 1960s jalousie windows on Key Biscayne cannot be responsibly restored to perform as impact-rated units. The original frames were never designed for HVHZ wind loads, and decades of salt air have typically seized the sash balances and corroded the jamb metal. Restoration makes sense only for a small number of architecturally significant mid-century homes where the original window is part of the building’s character and the owner is willing to pair the restored jalousie with a separate rated storm window. For most homeowners, full frame replacement is the only option that meets code and actually protects the house. We have done both on the island. Our in-house millwork team can build new jamb extensions to match your original plaster returns. Call (754) 238-2201 and we’ll measure your openings and tell you what’s feasible.
Call TruePane Windows & Doors for Your Key Biscayne Window Replacement
You’ve lived with these windows long enough to know when they’re failing. The question is whether the company you hire will still answer the phone in ten years. TruePane Windows & Doors was founded in 2008 by second-generation glazier Dale Kessler, and we’ve built this business on the same standard since 2008 of combined trade heritage: if the pane is not true, the job is not done. We register both warranty layers in writing before the truck leaves your driveway. We price the job in writing before we order. And a live person answers the phone every hour of every day. If you’re considering window replacement on Key Biscayne, call (754) 238-2201 for your free estimate. Done right, by people who will still be here tomorrow.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key Biscayne, FL.
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.