Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Sliding & Patio Doors Across Key Biscayne
Sliding and patio door replacement in Key Biscayne runs $1,800 to $7,500 per opening depending on size, impact rating, and floor height, with custom multi-slide systems reaching $12,000 or more on beachfront condos. We’ll give you a written line-item price before ordering, and we’ll hold that number while your association votes. Call (888) 635-0804 to schedule a free in-home measure.
Key Biscayne is not mainland Miami. Every door on this island sits in the Miami-Dade High Velocity Hurricane Zone, faces salt spray from Biscayne Bay and the Atlantic at the same time, and answers to a condo board that takes months to vote. Our Sliding & Patio Doors team has replaced doors in every building type on the island, from 1960s mid-rises on Crandon Boulevard to post-Andrew single-family homes behind the Village. We know which NOA-ready systems clear association review without a fight, and which ones will stall for six months. That matters when your existing door is already binding in July.
Why TruePane Windows & Doors Is Key Biscayne’s Preferred Sliding & Patio Doors Company
Dale Kessler founded TruePane in 2008 after watching too many South Florida homeowners accept fogged seals, seized tracks, and voided warranties as normal. Years of glazing craft runs through this company, and the rule has not changed since day one: if the pane is not true, the job is not done. Key Biscayne homeowners call us because we write down exactly what they are buying, side by side on paper, and register both warranty layers before the truck leaves the driveway.
We are an authorized installer for more than a dozen manufacturer lines, including PGT, CGI. On Key Biscayne, that means we can quote an impact-rated PGT multi-slide next to an Andersen gliding patio door on the same sheet, with pricing for the same opening, so you see the real difference. Our technicians are background-checked and uniformed. They measure every opening twice. Dale Kessler signs off on the final order. When the association asks for Miami-Dade NOA documentation, we hand it over before the board meeting, not after.
Every job carries the Done Right Promise and The Keystone Standard. Both manufacturer warranty layers get registered in writing, durations stated, before we leave your driveway. We stand behind it. No paperwork fights. No fine print that covers neither.
Our Sliding & Patio Doors Services in Key Biscayne
Patio Doors
Whether you are replacing a corroded original slider in a 1970s condo near Bill Baggs Cape Florida State Park or adding a patio door to a rebuilt single-family home in the Village, the opening matters. Key Biscayne’s salt air attacks aluminum frames year round. We quote marine-grade coatings and reinforced sill drainage as standard on this island, not as an upgrade.

Impact Sliding Glass Doors
Impact sliding glass doors on Key Biscayne are not optional hardware. They are the difference between a living room and a wind tunnel during a storm. Every impact product we install carries a Miami-Dade Notice of Acceptance (NOA) and is matched to the design pressure of the specific opening. We handle the paperwork, the board package, and the crane lift coordination when your building is over the third floor. Most impact slider replacements are completed in a single day once the units arrive.

Sliding Glass Door Replacement
On Key Biscayne, the chief reason sliding doors get pulled out is not broken glass. It is seized roller assemblies and corroded bottom tracks. Original aluminum sliders on 1960s through 1980s condo stock flex under wind load and leak wind-driven rain from both sides of the island during storms. We replace the entire pocket, not just the panel, and we check the header and jamb for concealed corrosion behind the stucco return before we order anything.

Impact French Patio Doors
Impact French patio doors suit Key Biscayne homes where the opening is wider than a standard slider pocket and the aesthetic matters to an association or architectural review board. We install French doors with triple-point locking hardware, impact-rated glass, and marine-grade frames. The fixed price includes the NOA documentation package your board will ask for.

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 Biscayne
We are an authorized installer for more than a dozen manufacturer lines. On Key Biscayne, we stock replacement rollers, tracks, and hardware for PGT and CGI systems locally, which shortens turnaround when a condo door fails a board-required inspection. We also quote Mr-Glass and Therma-Tru products where the association spec demands them. If you have an existing ECO Window Systems slider that needs track work, our technicians service those too. We carry the common parts for Key Biscayne’s most-installed brands, so a roller replacement doesn’t turn into a two-week wait.
Common Sliding & Patio Doors Problems We See in Key Biscayne Homes
- Seized roller assemblies and bottom tracks. Constant salt-laden air from both the bay and ocean sides corrodes original aluminum hardware within a few years. Doors that slid fine in March will not budge by August, even before a storm arrives.
- Flexing single-pane sliders from the 1960s to 1980s. These doors were never designed for HVHZ wind loads. The interlocking stiles leak wind-driven rain from the bay side during one storm and the ocean side during the next.
- Concealed frame corrosion behind stucco returns. Frameless patio door headers and jambs rot unseen for years. The first sign is often tile cracks or baseboard swelling, by which point the water has been moving for a long time.
- Association approval gridlock. A door replacement that takes three weeks on the mainland can take three months on Key Biscayne, because the board must review NOA documentation, Florida condominium statute requirements, and sometimes architectural criteria before anything gets ordered.
Pricing for Sliding & Patio Doors in Key Biscayne, FL
What you pay depends on the opening, the wind zone, and the floor height. Here is what we see on Key Biscayne today:
- Standard impact sliding glass door (6 to 8 feet wide): $1,800 to $3,200 installed
- Impact French patio door (single opening): $2,500 to $5,500 installed
- Large multi-slide or telescoping impact system: $7,000 to $15,000+ installed
- Non-impact sliding door replacement (where code allows): $900 to $1,800 installed
- Track, roller, or hardware repair on existing slider: $180 to $450
Floor height moves the price on Key Biscayne. A third-floor condo replacement needs a crane lift and sometimes a street permit from the Village. Custom fabrication runs four to six weeks. We lock the price in writing before ordering, and we hold it for 90 days when your association is still voting. Call (888) 635-0804 for a free in-home measure and a written quote. Estimates are free, and the quote you sign is the price you pay.
What Sliding & Patio Doors Costs in Key Biscayne
For planning purposes, impact windows in Key Biscayne generally run $800 to $1,500 per window installed. Impact single-hung units land between $900 and $1,800. Large or custom openings, including oversized patio sliders, run $2,500 to $5,000, and whole-home packages start around $8,000 and can pass $25,000 depending on opening count and floor height. In Key Biscayne specifically, three things push numbers higher than the mainland: the mandatory Miami-Dade HVHZ NOA testing on every product, the crane lift and logistics costs for condos above the third floor, and the marine-grade coatings that survive island salt air. We give you a written line-item quote before you commit to anything. The measure is free.
Florida Pays You Back
Florida offers real money for impact-rated doors and windows, and the incentives stack. The My Safe Florida Home program provides matching grants up to $10,000 for qualifying wind-mitigation upgrades. Florida also exempts impact-resistant windows and doors from sales tax. The federal 25C energy credit covers 30% of product cost, up to $600 per year, on qualifying units. After a wind-mitigation inspection, which runs about $75 to $150, many Key Biscayne homeowners see windstorm-premium credits averaging around 25% on the windstorm portion of the policy. The programs and the carriers set the final numbers, so we cannot guarantee a figure. But we can tell you which products qualify, and we can hand you the paperwork your insurer asks for.
The Key Biscayne Difference: Salt, Wind, and the Board Vote
Mainland Miami deals with hurricane wind. Key Biscayne deals with hurricane wind and a 360-degree salt bath. The island sits low with no mainland buffer, so storm fronts push salt spray from Biscayne Bay and the Atlantic at the same time. That is why the chief reason luxury condo and single-family doors on Key Biscayne get pulled out is corroded tracks and rollers, not just glass failure. A door that looks fine from the living room can be rotting inside its pocket. And unlike mainland Miami, every single sliding and patio door replacement on this island must pass full Miami-Dade HVHZ testing, including the large-missile rating. There is no code shortcut on a barrier island in a High Velocity Hurricane Zone.
On a beachfront condo off Crandon Boulevard, our crew replaced a 1970s aluminum sliding door whose track had seized from decades of bay-and-ocean salt exposure. We installed a PGT impact-rated multi-slide system with a marine-grade frame coating. Because the association needed board approval before ordering, we held the written price for 90 days, and the NOA paperwork cleared a week before the crane lift. That is how it works on Key Biscayne when the company knows the island: price locked, paperwork ready, board satisfied, and the door arrives when it is supposed to.
One more note on impact windows versus hurricane shutters, since the question comes up in every Key Biscayne board meeting. Shutters require someone to be home, awake, and physically able to hang panels before a storm. Impact glass does the job permanently, with no panels to store and no scramble at the last minute. For a homeowner who plans to stay in the house, the permanent route is the one that actually gets used.
We Also Serve Cities Near Key Biscayne
TruePane serves Key Biscayne and the surrounding South Florida communities, including Miami, Miami Beach, Hialeah, and Opa Locka. If you live across the Rickenbacker Causeway and need a sliding door measured or a board package prepared, call us. Dispatch and scheduling are coordinated from our Miami, South Florida office, and crews serve Key Biscayne locally.
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 - Sliding & Patio Doors in Key Biscayne
Yes. Key Biscayne sits in the Miami-Dade High Velocity Hurricane Zone, and every replacement door, in a condo or a single-family home, must carry a Miami-Dade Notice of Acceptance for the exact configuration installed. There is no single-family exemption on a barrier island. Call (888) 635-0804 and we will confirm the NOA for the door you are considering before you buy.
Salt-laden air from Biscayne Bay and the Atlantic is corroding your rollers and track. Original aluminum slider hardware on Key Biscayne seizes within a few years of exposure, and the door gets heavier every season until it stops moving. A track and roller replacement usually fixes it in one visit, and we stock common PGT and CGI hardware locally. Call (888) 635-0804 for a free estimate.
Yes, and they sometimes do. Condo associations governing pre-Andrew buildings must satisfy Miami-Dade HVHZ NOA requirements and Florida condominium statute approval processes, and some also enforce architectural review criteria. The practical solution is to bring the board an NOA-ready product with documentation and a written price, which is exactly what we prepare before the first vote. Call (888) 635-0804 and we will build your board package.
At least 90 days before the association vote, because custom fabrication runs four to six weeks and you do not want the price floating while the board deliberates. We hold written pricing for 90 days on Key Biscayne specifically because we know the board calendar. After that, material costs may move. Call (888) 635-0804 to get your quote locked in writing.
Yes, usually. Impact-rated glass carries a low-emissivity coating that cuts solar heat gain, which matters when your door faces the ocean or the bay. Key Biscayne homeowners typically see lower cooling costs after replacing single-pane 1970s sliders, and the federal 25C credit covers 30% of product cost on qualifying units. Call (888) 635-0804 for an exact quote and the paperwork your tax preparer will want.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Key Biscayne and South Florida since 2008 with years of glazing craft behind him.



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