Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom Windows & Doors Across Key Biscayne
Custom windows and doors in Key Biscayne are a different animal from what mainland contractors are used to seeing. We’re not being dramatic. The salt spray here never quits, the hurricane code is the strictest in the country, and the homes range from 1970s concrete-block ranches to bay-front towers with curtain walls older than most of our crew. TruePane has been doing this work long enough to know that a fogged seal on Crandon Boulevard is not the same problem as a fogged seal in Coral Gables. If you’re pricing custom windows or Key Biscayne Door Installation on the island, call (813) 320-9346 and we’ll give you a straight answer on what it costs and what it takes. Free estimates, no pressure.
Why TruePane Windows & Doors Is Key Biscayne’s Preferred Custom Windows & Doors Company
Homeowners on Key Biscayne call us because we answer the phone. That sounds small until you’ve spent a week chasing three contractors who never call back. A live person picks up at (813) 320-9346, 24 hours a day, seven days a week. Not an answering service. Not a voicemail that gets checked on Monday. That matters on a barrier island where a failed impact window during hurricane season is not something you want to leave until next week.
Dale Kessler founded TruePane in 2008, but the trade runs deeper than that. Dale is a second-generation glazier, and the rule he keeps on the whiteboard has not changed in years of family work: if the pane is not true, the job is not done. Our Custom Windows & Doors team works under that rule every day. We’re an authorized installer for more than a dozen manufacturer lines, which means when we quote a Key Biscayne job, we put Andersen, Pella, Marvin, and ES Windows side by side on paper so you see exactly what you’re buying and what each one costs. Not a verbal estimate. Paper.
Key Biscayne homeowners have also figured out that we’re not a franchise crew that flies in for a season. TruePane is based in South Florida, and our techs serve Key Biscayne from our Miami office. We hire local, we train apprentices into journeymen, and we plan to be here in thirty years. That’s why we register both manufacturer warranty layers in writing before the truck leaves your driveway. It’s called The Keystone Standard, and it means when something goes wrong, there’s no paperwork fight. The warranty is on file, with durations stated, in your name.
Every job also carries our 90-Day Done Right Promise. If the install isn’t done right, we make it right. No arguing. No fine print that quietly covers neither the labor nor the glass. That’s the kind of guarantee that matters to someone who remembers a contractor who left them with a binding door and a fogged seal in 2009 and never answered the phone again.
Our Custom Windows & Doors Services in Key Biscayne
Key Biscayne is not a production-window market. The island is full of custom shapes, oversized openings, architectural details, and condominium work that requires a glazier who reads shop drawings the way a mechanic reads an engine. These are the four services, including our Window Replacement in Key Biscayne, that we handle most often on the island.
Custom Shape Windows
Half-rounds, trapezoids, rake windows, eyebrow arches. Key Biscayne’s older ranch homes on streets like Woodcrest Road and Fernwood Road have original openings that do not match any stock size made today. A custom shape window is measured twice on site, fabricated to the exact curve or angle, and glazed with Miami-Dade NOA impact-rated glass. The frame has to be marine-grade, because the salt air on this island eats standard aluminum in five to seven years. We quote these in writing before anything is ordered.

Commercial Storefront Glazing
The retail and restaurant storefronts along Crandon Boulevard deal with the same salt exposure as the condos behind them. Aluminum storefront frames pit and corrode, the door closings start to drag, and the glass itself gets etched by wind-driven salt. For Key Biscayne commercial work, we specify fusion-welded frames, stainless hardware, and impact glazing that meets HVHZ code. We also coordinate with the property manager so business does not stop while the glass is out.

Curtain Wall Systems
This is the big one on Key Biscayne. The island’s condominium towers, especially the bay-front and oceanfront buildings from the 1970s through the 1990s, are wrapped in curtain wall that is now forty to fifty years old. Original aluminum mullions show salt pitting. Insulated glass units fail and fog. Sealant breaks down. Replacing a curtain wall section on a Key Biscayne high-rise means engineered shop drawings, custom oversized panels, Impact Windows & Doors in Key Biscayne with Miami-Dade NOA impact glazing, and often a crane or swing-stage. TruePane has done this work on the island, and we’ve done it with the building occupied. The lead time on custom curtain wall glass is typically eight to twelve weeks, sometimes longer. That fact, more than labor, sets the schedule. We fix the price before ordering so the number does not move while you wait.

Architectural Grilles & SDLs
Simulated divided lites and true grilles are an architectural detail, and Key Biscayne architects and designers specify them often, especially when a renovation has to match the original aesthetic of a 1960s or 1970s building. The catch on a barrier island is that decorative grilles and specialty finishes that aren’t matched to a Miami-Dade NOA impact-rated insulated glass unit will not pass a permitted renovation. We coordinate the grille pattern, the glass package, and the NOA documentation as one system, so the architect gets the look and the building department gets the approval without a reorder.

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 Biscayne
We are an authorized installer for ES Windows, ECO Window Systems, and Andersen, among more than a dozen manufacturer lines we carry. That’s relevant on Key Biscayne, because a custom window order here is not something you want to place with a contractor who has to guess where the glass comes from. We stock common replacement parts and hardware for the brands most often found on the island, which shortens the turnaround when a condo association needs a matching side lite or a homeowner needs Viewlux repair in Key Biscayne or a new sash for an Andersen French door that’s been swallowing salt air for two decades. Fast turnaround on parts, long experience on installs.
Common Custom Windows & Doors Problems We See in Key Biscayne Homes
- Fog between the panes of a custom insulated glass unit. On Key Biscayne, argon-filled units that lose their seal show fog within two to three years of salt-spray exposure. Once the seal is gone, the unit cannot be repaired. It gets replaced, and the replacement has to meet current HVHZ code.
- Salt pitting and frame corrosion on original aluminum windows and doors. The island’s year-round salt-laden humidity attacks bare aluminum and unprotected hardware faster than anywhere on the mainland. We regularly see original 1970s frames on Crandon Boulevard with pitting deep enough that re-glazing is not an option.
- Rotting custom millwork and trim around jamb extensions. Wood specified for a mainland home rots within a few seasons on Key Biscayne unless it’s marine-grade or pressure-treated. End grain near the sill is the first to go. We see this around sliding doors, French doors, and any custom jamb that was not written for a saltwater environment.
- Oversized glass without the right glazing package turning a room into a solar oven. Bay-front rooms with large custom glass panels need low-E coatings and a sensible SHGC rating, or the afternoon sun makes the space unlivable. We’ve replaced big custom units on Key Biscayne that were beautiful for the first hour of the day and unbearable by three.
Pricing for Custom Windows & Doors in Key Biscayne, FL
A custom shape window in Key Biscayne typically runs $1,800 to $4,500 installed, depending on size, curvature, and the NOA-rated glazing package. A fully custom oversized glass panel for a bay-front room, with marine-grade frame and impact glazing, usually lands between $4,000 and $9,000 per panel. Curtain wall replacement on a Key Biscayne condominium is a different scale: $180 to $320 per square foot is a realistic range when you factor in engineering, custom fabrication, NOA documentation, and crane or swing-stage work. Architectural grilles and SDLs typically add $120 to $280 per window or door unit, but that number changes when the pattern has to be custom-matched to an existing building’s aesthetic.
What moves the price on Key Biscayne more than anything is the glass package and the lead time. Impact-rated laminated glass with low-E coating costs more than standard insulated glass, and anything custom is made to order. The schedule belongs to the manufacturer’s production queue, not to our labor crew. We quote a fixed price in writing before we order a single lite, and that price does not change while you wait for the glass. Call (813) 320-9346 to schedule a free estimate. We’ll measure twice and put the numbers on paper.
| Service | Typical Key Biscayne Range |
|---|---|
| Custom shape window (impact glazing, marine frame) | $1,800 - $4,500 installed |
| Oversized custom glass panel (bay-front, NOA glazing) | $4,000 - $9,000 per panel |
| Curtain wall replacement (condo, engineered) | $180 - $320 per sq ft |
| Architectural grilles & SDLs (added per unit) | $120 - $280 per unit |
We Also Serve Cities Near Key Biscayne
TruePane’s South Florida crew covers the whole Miami metro. If you’re in Miami Beach, Miami, Coral Gables, or Hialeah, we handle custom windows and doors there the same way we do on Custom Windows & Doors in Key Biscayne: same fixed pricing, same written warranties, same live person on the phone at (813) 320-9346. The salt exposure changes across the causeway, and so does the code enforcement, but the standard does not.
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 - Custom Windows & Doors in Key Biscayne
Yes. Every custom window and door installed in Key Biscayne is inside Miami-Dade County’s High Velocity Hurricane Zone, regardless of whether the structure sits on the oceanfront or several blocks inland on Fernwood Road. That means the product must carry a Miami-Dade Notice of Acceptance. There is no exemption for distance from the water. If a contractor tells you otherwise, check the product approval yourself before you sign anything. Call (813) 320-9346 and we’ll show you the NOA paperwork before we order.
The lead time is set by the manufacturer’s production queue for custom fabricated glass, not by labor on site. A custom oversized panel with Miami-Dade NOA impact-rated glazing and a marine-grade frame is made to order, and the queue runs eight to twelve weeks on much of the island’s curtain wall and oversized work. Add a designer-selected grille pattern or specialty finish, and a reorder on a non-compliant package can double that. We fix the price in writing before ordering and give you the real production timeline up front, so the schedule is not a surprise.
Under a permitted renovation, original jalousie windows cannot be grandfathered in Key Biscayne. When a permit is pulled on a Key Biscayne home, the scope often expands to require that existing openings be brought into HVHZ compliance. That’s a building department rule, not a contractor’s upsell. We’ve worked on homes where a single door replacement triggered a compliance review on the original single-pane sliders, and the homeowner had to budget more than expected. Ask us before you file the permit. Call (813) 320-9346 for a straight answer on what your project actually requires.
Fog between the panes means the seal on the insulated glass unit has failed. On Key Biscayne, salt-laden humidity accelerates seal failure, and argon-filled units often show fog within two to three years of exposure. Once the seal is gone, the unit cannot be cleaned or repaired. It gets replaced, and in this market the replacement has to meet current HVHZ impact standards. We inspect failed units on the island regularly and can tell you if a single lite can be swapped or if the whole sash needs to go. Call (813) 320-9346 to schedule a look.
We coordinate the window schedule with the millwork shop before the glass is ordered. Custom jamb extensions, interior casing, and cabinetry that wraps around a window all depend on the exact frame depth and the rough opening dimensions. If the millwork is built to the wrong dimensions, the install date slips. On Key Biscayne, where custom millwork around jamb extensions rots quickly if not specified as marine-grade or pressure-treated, we write the materials list with the joinery shop at the start, not after the glass arrives. That keeps the designer’s intent, the building permit, and the production queue on the same schedule.
Call TruePane Windows & Doors at (813) 320-9346 for a free estimate on custom windows and doors in Key Biscayne, FL. A live person answers, we measure twice, and we put the price in writing before anything is ordered. Done right. In writing. On this island.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving South Florida through a second-generation glazier’s craft tradition since 2008.
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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