Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Windows & Doors Services in Key Biscayne, FL
If your windows are fogged, your sliders bind when the humidity climbs, or your doors no longer seal against the salt air, you already know the problem isn’t cosmetic. On Key Biscayne, it’s structural. We’re TruePane Windows & Doors, and our crews work on the island every week. Replacement windows and doors in Key Biscayne start with a frank conversation about the Miami-Dade building code and the particular way salt, wind, and sun treat a house here. A live person answers the phone at (813) 320-9346 when you call. The estimate is free, and we’ll come out, take real measurements, and put your options on paper without the usual sales pressure.
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.
Why Key Biscayne Homeowners Choose TruePane Windows & Doors
We’ve been called into Key Biscayne homes in the Village, on Harbor Drive, and around East Enid Drive after other contractors left fogged panes, misaligned sliders, and door frames that let daylight through the jamb. The work we do follows a rule Dale Kessler keeps on the whiteboard at the shop: if the pane is not true, the job is not done. That’s not a slogan. It’s the standard every uniformed technician works to. Homeowners here tend to be people who have owned the same property for twenty-plus years and plan to stay. They want a square deal, nothing more complicated than that. We register both manufacturer warranty layers in writing before the truck leaves the driveway, and our 90-Day Done Right Promise means if something isn’t right, we make it right without a paperwork argument. We hire locally, train our own people, and behave like a company that intends to be in Key Biscayne thirty years from now.
Windows & Doors Services We Offer in Key Biscayne
Every service below is handled by the same TruePane crew, with the same Keystone Standard behind each job. No subcontractors, no third-party installation teams, no chasing a warranty through someone else’s office. Here’s what we do on the island, one service at a time.
Window Installation
New window installation on Key Biscayne begins with the opening, not the product. We measure twice, check the existing framing for salt rot or corrosion, and only then quote manufacturer lines side by side on paper. For more detail, see our Window Installation in Key Biscayne page.

Door Installation
A properly installed door on a barrier island needs to hold a straight line against wind, humidity, and decades of daily use. We hang and set entry doors, French doors, and custom doors to the tolerances the HVHZ demands. Door Installation in Key Biscayne covers specifics, including marine-grade frame and hardware options.

Window Replacement
Many older Key Biscayne homes still show original single-pane sliders and aluminum jalousies. Those are beyond saving, and we replace them with current impact-rated glass that meets Miami-Dade product-approval standards. Read more about our Window Replacement in Key Biscayne process.

Impact Windows & Doors
Impact Windows & Doors in Key Biscayne are the single most common upgrade we install on the island, and for good reason. It’s required whenever a permitted renovation touches window or door openings. We quote PGT, CGI, and ES Windows product lines, and we register both manufacturer warranty layers the day the job finishes.

Energy-Efficient Windows
Energy-Efficient Windows in Key Biscayne with Low-E coatings, argon gas fills, and thermal breaks do real work, where the sun loads the east and west exposures for hours. These windows still have to pass impact standards here, so we spec marine-rated, energy-efficient lines that hold a Miami-Dade NOA.

Sliding & Patio Doors
Salt air and wind-driven rain punish Sliding & Patio Doors in Key Biscayne more quickly than nearly anywhere else in the metro. We replace and reset sliders with proper drainage, stainless hardware, and impact glass where required.

Glass Railing Systems
Glass Railing Systems in Key Biscayne along Crandon Boulevard and the bay-front condominiums give an unobstructed water view but demand frameless tempered panels that can handle wind loads and salt spray. Our team measures and installs custom glass railing systems that meet local structural code.

Custom Windows & Doors
Some openings on the island don’t take a standard size, especially in older concrete-block homes and one-off Mid-Century builds. We arrange custom-cut frames and shaped glass, quoted in advance and ordered with the same warranty registration as every other job we do.

Neighborhoods We Serve in Key Biscayne
We work across the whole island, from the Village to the Key Biscayne Beach area and the mid-island residential stretch near Crandon Boulevard. Our typical response window for new estimates in Key Biscayne runs two to four business days, depending on the season.
- The Village of Key Biscayne
- East Enid Drive and Harbor Drive
- Mashta Island
- Crandon Boulevard corridor
- Key Biscayne Beach oceanfront
Why Key Biscayne’s Climate & Housing Affect Windows & Doors
Key Biscayne is a true barrier island with Biscayne Bay to the west and the Atlantic opening straight east. There is no landmass buffer. Every home is within direct salt-spray range of open water on at least one exposure. That produces one of the most aggressively corrosive environments for windows and doors in the entire Miami metro. Frames oxidize, hardware corrodes, seals fail early, and existing jalousie or single-pane sliders quit keeping out humidity years before homeowners notice the damage. Meanwhile, the entire island sits inside Miami-Dade County’s High Velocity Hurricane Zone, the strictest product-approval code in the nation. The housing stock splits into two layers: 1960s and 1970s concrete-block ranch homes with the original aluminum jalousies and single-pane sliders now non-compliant with current HVHZ rules, and 1970s-to-1990s condominium towers whose large glass sections need impact retrofit or full replacement. No neighboring mainland neighborhood faces the same 360-degree saltwater corrosion plus HVHZ compliance pressure. A repair or replacement call on Key Biscayne is very often the first step in getting a property through a real-estate closing or an insurance re-inspection, because original windows cannot be grandfathered during a permitted renovation.
Pricing for Windows & Doors in Key Biscayne
Pricing depends on the opening, the product line you select, and whether the job is a repair, a replacement, or new construction. Here are straightforward ranges for Key Biscayne, based on recent jobs.
- Window replacement (impact-rated, standard size): $1,200-$2,800 per opening
- Door replacement (entry door, impact-rated): $2,500-$6,500 per opening
- Sliding door replacement (impact-rated): $4,000-$9,000 per opening
- Glass railing panels: $400-$900 per linear foot
- Isolated glass or seal repair: $250-$900 per pane
We quote fixed numbers before the job starts. No change orders, no surprise line items. If you’re a senior or a veteran, a permanent 5% discount applies. Call (813) 320-9346 and we’ll walk through the line items with you.
Service Area - Cities Near Key Biscayne
TruePane crews also serve nearby cities across the Miami metro. If you own property outside the island, see our pages for Miami Beach, Miami, Coral Gables, and Hialeah.
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 About Windows & Doors in Key Biscayne
Yes, for most permitted renovation work. Key Biscayne lies inside Miami-Dade County’s High Velocity Hurricane Zone, and impact-rated windows or doors with a Miami-Dade Notice of Acceptance are required whenever an existing opening is modified during a permitted job. Original jalousies and single-pane sliders cannot be grandfathered under current code. Call (813) 320-9346 and we’ll check what applies to your property.
For a standard-size impact-rated replacement window in Key Biscayne, expect $1,200 to $2,800 per opening. Larger openings, custom sizes, and higher-end product lines such as Andersen, Pella, or Marvin can push the number higher. We give fixed written quotes before any work begins.
No. TruePane quotes a fixed price upfront. Unless we find hidden structural damage that was impossible to see before the opening was exposed, the number we give you is the number on the final bill. If we find something, we’ll stop and tell you before touching anything else.
Yes. We handle the permit application and schedule the inspections with the Village of Key Biscayne and Miami-Dade County as required. The homeowner should never be left managing code compliance on their own. We’ll tell you exactly what’s needed for your property.
Most single-family replacement jobs in Key Biscayne run two to five working days once materials land. Custom sizing or a full multi-opening job with concrete-block retrofitting may take longer. We’ll give you a schedule in writing before you commit. Call (813) 320-9346 for a free estimate and we’ll map out the timeline.
If you’re in Key Biscayne and your windows or doors are no longer doing their job, call TruePane at (813) 320-9346. A live person answers, and we’ll schedule a free estimate at your convenience. TruePane Windows & Doors. If the pane is not true, the job is not done.
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.
Other TruePane Windows & Doors Services
What Neighbors Say About TruePane Windows & Doors
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Key Biscayne Customers Say
"Our bay window had rotted at the sill and two other outfits wanted to talk us into a flat picture window instead. TruePane rebuilt the opening and matched the original look. Neighbors have knocked on the door about it."
- Gene A."Quote was the price, which after three other bids that grew legs was worth something. Double-hungs went in clean, they hauled the old ones, and the registration paperwork for the warranty came in the mail like they said."
- Dorothy K."French doors to the patio, custom size because this house was built in 1961 and nothing is standard. Measured twice, three weeks to fabricate like they warned, and the install day they laid runners over my floors without being asked."
- Marie S.



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