Free in-home measure and quote — PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindows & Doors Services in Key Biscayne, FL
If you live on Key Biscayne, you already know salt air never takes a day off. It works on window frames, door thresholds, and sliding glass tracks around the clock. That’s why we answer the phone at (844) 901-4551 with a live person, any hour, and why we’ve built our entire window and door operation around the very specific demands of this island. You’re not calling a call center in another state. You’re calling Winslow Windows & Doors, and we know exactly what your home is up against out here.
Whether you’re in a 1960s condo tower near Crandon Boulevard or a post-Andrew single-family home off Harbor Drive, the problems are familiar: corroded frames, fogged glass, doors that don’t seal, and sliding panels that have been fighting salt spray for decades. We fix it, replace it, or upgrade it, with a written estimate before any work begins. No surprises on the invoice, and Ed Winslow’s name goes on every job we do.
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 Winslow Windows & Doors
Because the island punishes shortcuts. We’ve seen what happens when a contractor from the mainland installs standard aluminum hardware on a Key Biscayne sliding glass door. It seizes or pits within two or three years, because the air here is saturated with salt from both Biscayne Bay and the Atlantic simultaneously. Our technicians are background-checked, uniformed, and trained on marine-grade hardware specs for the island before they ever pull up to your building or home.
Homeowners in Key Biscayne neighborhoods like the Village area along Crandon Boulevard, the mid-rise corridor near Cape Florida, and the condominium stretches off Old Cutler Road reach out to us for one reason: we don’t treat island conditions as an afterthought. We spec stainless-steel rollers, locks, and hinges on every sliding glass door without exception. We install impact-rated windows and doors that carry Miami-Dade Notice of Acceptance (NOA) certification for every single configuration. And we back the work with the Done Right Promise. If it’s not done right, we make it right. Period.
Every call to (844) 901-4551 gets answered by a person, 24 hours a day, 7 days a week. No voicemail loops. No ticket numbers. Just a neighbor you can call at 2 a.m. and someone will actually answer.
Windows & Doors Services We Offer in Key Biscayne
Impact Windows
Impact windows are the default choice on Key Biscayne, not an upgrade. Laminated impact glass with Miami-Dade NOA or Florida Product Approval per configuration is what we install, matched to the design pressure each opening actually requires. You get permanent hurricane protection without panels to drag out and hang, and the glass does its job every day of the year, not just during a watch. Learn more about our Impact Windows in Key Biscayne.
Window Installation
We replace windows in concrete condominium towers and single-family homes alike. Every install follows High Velocity Hurricane Zone (HVHZ) compliance requirements where Key Biscayne’s wind zone demands it, and we never quote a design pressure rating above +/-100 on any opening. Learn more about our Window Installation in Key Biscayne.
Window Replacement
If your original aluminum frames from the 1960s or 70s have corroded beyond repair, replacement is the answer, and it’s easier than most people expect. We handle the entire swap, from removing degraded storefront-style frames to sealing and finishing the new units. Learn more about our Window Replacement in Key Biscayne.
Door Installation
Our Key Biscayne Door Installation handles entry doors that take a beating from sun, salt, and storm-driven rain. We install fiberglass and steel doors that hold their finish and their seal, with proper threshold and sill pan details for flood zone elevations. Every installation gets a written, line-item quote before we start.
Sliding Glass & Patio Doors
Key Biscayne Sliding Glass & Patio Doors are the most common failure point we see in island condos and homes. We replace old, corroded aluminum sliders with impact-rated units fitted with marine-grade stainless-steel rollers and hardware from the start. Your door will glide, not grind.
Energy-Efficient Windows
Better glass changes how your home feels and what you pay to cool it. Our Energy-Efficient Windows in Key Biscayne reduce heat gain while holding up to the island’s salt exposure and wind loads. The right glass east of the bay means lower cooling bills and a quieter interior.
Impact Garage Doors
Garage doors are the largest opening in most homes and the one people forget until a storm approaches. We install code-approved Impact Garage Doors — Key Biscayne that carry the same Miami-Dade certification standard as our windows, so the whole envelope stays protected.
Custom & Geometric Windows
For curved glass, radius tops, or unusual openings in higher-end island homes, we build custom and geometric windows to exact site specs. Your view doesn’t have to shrink just because the opening is unusual.
Roof Repair
Salt air attacks roofing fasteners and flashing the same way it attacks window hardware. We perform roof repair on island homes, matching materials and sealing all penetrations before leaks become structural problems.
Roof Replacement & Installation
When repairs won’t do, we replace full roof systems to current wind-load standards for Key Biscayne’s exposure. Shingle, tile, or metal. We pull permits, pass inspections, and stand behind the final product.
Shingle, Tile & Metal Roofing
Each roof type has its own strengths on a barrier island, and we’ll give you an honest recommendation based on your structure, your elevation, and your exposure. No vague upsells. Just facts.
Neighborhoods We Serve in Key Biscayne
We work throughout the entire 33149 ZIP code, from the high-rise and mid-rise buildings near Crandon Boulevard to the residential streets around Cape Florida and the gated communities off Old Cutler Road. Here are a few of the areas we’re in most often:
- The Village of Key Biscayne — single-family homes and townhomes near the commercial core
- Cape Florida — waterfront homes along the island’s southern end
- Harbor Drive corridor — condominium towers and direct bayfront properties
- Old Cutler Road area — mid-rise condos and estate homes
- Ocean Club and Beach Club buildings — larger residential complexes with heavy exposure
Typical response time across Key Biscayne is fast, especially for urgent window or door failures. We’re in and out of the island constantly.
Why Key Biscayne’s Climate & Housing Affect Windows & Doors
Key Biscayne is a true barrier island completely ringed by salt water. Biscayne Bay sits to the west, the Atlantic to the east. There is no mainland buffer, no direction from which the breeze arrives fresh. Every window frame, door hinge, and glazing seal on the island gets hit with marine salt spray from multiple exposures at once. That’s why original aluminum sliding glass doors in 1960s and 70s condo towers have corroded so badly, and why even post-Hurricane Andrew impact systems now need seal and hardware refreshes.
On top of that, Miami-Dade County’s High Velocity Hurricane Zone (HVHZ) designation means every window and door product installed on Key Biscayne must carry a Miami-Dade Notice of Acceptance, the strictest hurricane-product certification in the United States. You can’t slap in a mainland-rated unit and call it done. The product has to be approved for this exact wind zone, and the installation has to meet flood threshold and sill pan requirements for much of the island’s elevation. Contractors who work here learn fast that marine-grade stainless-steel hardware is not optional. It’s the only thing that survives. An out-of-area company finds that out through warranty callbacks. We already know it.
Pricing for Windows & Doors in Key Biscayne
Impact windows in Key Biscayne generally run $1,100 to $2,600 per opening, installed, including removal and code-compliant anchoring. Sliding glass doors typically fall between $3,500 and $8,500 depending on size, glass package, and hardware selection. Entry door replacement usually lands between $2,000 and $5,500. Custom or geometric windows and full garage door replacements are quoted per project after we measure and review your elevation certificate where flood thresholds are a factor.
Every estimate is free, written, and line-itemed. We also offer $40 off any repair over $200, a free second opinion on any written estimate, no trip charge inside our home county, and a permanent 10% discount for seniors and veterans.
Florida Pays Key Biscayne Homeowners Back
There’s a stack of programs that can offset the cost of impact windows and doors, and we’ll point you to each one. The My Safe Florida Home program offers 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 can return up to 30% of product cost, capped at $600 per year on qualifying units. And after a wind-mitigation inspection, which typically runs $75 to $150, many homeowners see windstorm-premium credits averaging around 25% on the windstorm portion of their policy. We won’t promise a specific dollar figure. Your carrier sets the final number. But we’ll show you exactly what to ask for.
One more thing worth thinking through: impact windows versus hurricane shutters. Shutters sit in a closet until a storm approaches, then someone has to haul them out, mount them, and hope. Impact windows are in place permanently. They protect your home on a Tuesday afternoon when you’re at work and a squall throws debris at your living room. That tradeoff matters on an island with 360-degree exposure.
Service Area — Cities Near Key Biscayne
We serve Key Biscayne and the surrounding South Florida communities, including Coconut Grove, Coral Gables, Miami Beach, and Miami. If you’re just off the island, the same live-answer phone and the same written-estimate standard apply.
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. Every window and door product installed in Key Biscayne must carry a Miami-Dade Notice of Acceptance or Florida Product Approval, because the island sits inside the High Velocity Hurricane Zone. That approval has to match the exact configuration of the unit going into your opening, not just the product line. Call (844) 901-4551 and we’ll check the approvals on your existing units and quote compliant replacements.
Plan on $1,100 to $2,600 per opening for most impact windows, installed. Sliding doors run higher, usually $3,500 to $8,500, because of size and marine-grade hardware requirements. The final number depends on your glazing package and design pressure needs. Estimates are free and written, so you’ll know the exact cost before anything is ordered.
Our quotes are fixed. You sign a line-item estimate and that’s the number on the invoice, full stop. If we uncover hidden damage during removal, we stop work, show you the issue, and agree on a change before touching anything else. No surprise charges, ever. Ed’s name is on the door and on every job we do.
We do. Every installation that requires a permit in unincorporated Miami-Dade County or the Village of Key Biscayne is permitted, inspected, and closed out by us. You’ll get copies of the paperwork. That’s part of doing it right, and it’s why we carry a published address and license number. Call (844) 901-4551 for a free estimate.
Once your custom units arrive, installation can be as fast as a single day per typical opening count. Custom fabrication runs 4 to 6 weeks from order. We’ll give you a written schedule when you sign, and we’ll keep you posted if anything shifts. Call (844) 901-4551 and we’ll walk you through the timeline for your specific project.
Key Takeaways
- Every window and door on Key Biscayne must meet Miami-Dade NOA and HVHZ standards
- Marine-grade stainless-steel hardware is mandatory on sliding glass doors, not optional
- Salt air from both bay and ocean corrodes standard frames and hardware within a few years
- Free written estimates, fixed pricing, and the Done Right Promise on every job
- Live person answers at (844) 901-4551, 24 hours a day, 7 days a week
Get Your Free Estimate in Key Biscayne
If your windows are fogging, your sliders are grinding, or your doors aren’t sealing like they used to, call Winslow Windows & Doors at (844) 901-4551. We’ll schedule a free estimate, give you a written line-item quote, and walk you through every incentive program you might qualify for. No pressure. No games. Just a straight answer from a local company that knows this island’s conditions better than anyone.
We’re the one down the road. Call (844) 901-4551 today.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving Key Biscayne and South Florida since 2011.
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
"Excellent work and a fair price for what it is, though impact glass is never cheap and one bedroom window arrived with a scratched pane. Ed flagged it before I saw it and the replacement went in without me chasing anyone."
— Bartholomew Crenshaw"A tile roof repair and new windows from the same company meant one crew, one permit runner, and nobody blaming the other trade. Ed checked the roof work himself before the tarp came off."
— Henrietta Pemberton"Our insurance agent asked for the wind mitigation paperwork and Ed had the whole file ready the day the job closed, every opening photographed. The premium conversation went very differently this year."
— Odessa Fairbanks