Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWhat Window Replacement Really Costs on Key Biscayne
Window installation in Key Biscayne runs $800 to $1,500 per opening for standard impact-rated units, with whole-home packages typically landing between $8,000 and $25,000 depending on opening count and frame material. Single-hung impact windows sit in the $900 to $1,800 range per unit installed. Large or custom openings, like the panoramic bay windows common in waterfront living rooms, run $2,500 to $5,000 all-in. Those figures include tear-out, haul-away, installation, and the Miami-Dade Notice of Acceptance paperwork your condo board will demand.
On Key Biscayne specifically, you’re not just paying for glass. You’re paying for marine-grade hardware, stainless fasteners, and a frame that won’t white-flower and pit inside five years. The same window installed inland without those upgrades costs 15 to 20 percent less, but on this island the inland spec fails early and expensively.
Call (904) 478-8983 and we’ll give you a written, line-item quote after a free in-home measure. Ed Winslow’s name is on every number we hand you.
Fast, Reliable Window Installation Across Key Biscayne
Window installation on Key Biscayne means working inside Miami-Dade’s High Velocity Hurricane Zone on an island completely ringed by saltwater. If a unit doesn’t carry a Miami-Dade Product Control Notice of Acceptance, your condo association won’t approve it, your insurer may not renew you, and the salt air will eat the hardware anyway. We’ve been replacing and installing windows for Key Biscayne homeowners and condo owners since 2011, and every single job we do here gets marine-grade hardware and HVHZ-rated glass as the baseline, not the upsell.
When you call (904) 478-8983, a real person answers. Not a call center. Not a voice tree. You’ll get a slot on our schedule and an honest conversation about your building, your budget, and what your condo board needs from you before work starts.
- Free in-home measure and written line-item quote - no vague “allowances”
- Miami-Dade NOA-rated impact units as standard on every opening
- Marine-grade stainless hardware on jamb hinges, locks, and fasteners
- Done Right Promise - if it’s not done right, we come back and make it right. That’s 100 years of accountability.
Why Winslow Windows & Doors Is Key Biscayne’s Preferred Window Installation Company
We’re the Window Installation company with a published address, a license number, and an owner whose name is on the truck. Ed Winslow founded Winslow Windows & Doors in 2011, and when Ed gives you a quote, Ed stands behind it. No shell companies. No subcontractor roulette. The crew that shows up at your condo on Crandon Boulevard or your home in the Village is background-checked, uniformed, and works for Winslow directly.
Key Biscayne customers call us because we don’t hand off a ticket number. We know the island’s buildings. We know which condo associations along Crandon Boulevard require specific NOA documentation before a ladder goes up. We know the salt-spray failure patterns in older aluminum frames and we spec replacements that outlast them by decades. When you call at 2 a.m. during a leak, someone answers. That’s Ed’s standard. No voicemail loops.
Senior and veteran homeowners in Key Biscayne get a permanent 10 percent discount. Repair over $200, take $40 off. If you’ve got a written estimate from another window company, bring it to us. We’ll give you a free second opinion.
Our Window Installation Services in Key Biscayne
Single & Double Hung Windows
In Key Biscayne’s older condo buildings, original double-hung units from the 1970s and 80s have sash balances that bind on salt-caked tracks and meeting rails that sag. We replace them with impact-rated single and double hung windows carrying a Miami-Dade NOA, stainless jamb hardware, and marine-grade balances that operate cleanly for decades. The upgrade from single to double hung adds ventilation without changing your opening size, which matters when your condo’s architectural committee reviews every change.
Horizontal Roller Windows
Horizontal roller windows are everywhere on Key Biscayne, and the inland-spec versions fail here faster than anywhere in the county. Butyl-glazed jamb-to-sill corners open up after five to eight seasons of salt-laden wind and start weeping into the stucco. We install rollers with sealed corners, marine-grade track, and impact-rated glazing that keeps the salt out of your tracks and your drywall.
3-Panel Sliding (3-Lite Roller) Windows
Wide 3-panel sliders are common in Key Biscayne living rooms and master bedrooms where owners want the full bay view. These are large missile impact openings, and they need design pressure ratings matched to the exact elevation and exposure of your unit. We fabricate and install 3-lite rollers with reinforced interlocking meeting stiles and stainless rolling hardware so the sash glides instead of dragging on corroded track.
Casement Windows
Casement windows on Key Biscayne have a specific weak point: the operator gears and hinge pins. Low-grade aluminum extrusions pit and white-flower under the weep covers, blocking drainage and holding saltwater against the sash track until the crank binds. We use marine-grade casement hardware and impact-rated glass, and we seal every exterior joint with stainless fasteners. When you crank the window open a year later, it turns like the day it went in.
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’re authorized installers for PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru. On Key Biscayne, we commonly spec ES Windows and ECO Window Systems on ocean-facing elevations because their marine finishes and hardware hold up under the Atlantic’s salt spray. CWS is another go-to for high-rise condos where design pressure requirements climb with floor height. We stock local parts and work with these manufacturers on expedited production so Key Biscayne customers don’t wait longer than necessary once a unit is ordered.
Common Window Installation Problems We See in Key Biscayne Homes
- Jalousie windows that are now uninsurable. Older condos and guest cottages along Crandon Boulevard and around the Village still have louvered jalousie units. They’re out of compliance with HVHZ code, and since Hurricane Irma’s direct hit in 2017, local insurers have sent non-renewal notices to unit owners who haven’t swapped them for impact-rated replacements. This isn’t a cosmetic upgrade; it’s a compliance repair.
- Standard galvanized fasteners rusting through. A 2000s-era fix-up used regular galvanized steel window fasteners. In Key Biscayne’s saltwater ring, those rust through, water wicks into the buck, drywall stains, and the rough opening rots. We replace with stainless and marine-grade sealed anchors whenever we touch an opening.
- Aluminum mullions eroding to lace. On a 1970s condo along Crandon Boulevard, our crew pulled an original jalousie whose aluminum mullions had eroded to a lacework pattern from decades of Atlantic salt spray. The sash was structurally compromised. We replaced it with a PGT double-hung carrying a Miami-Dade NOA and stainless jamb hardware. The building’s insurer had issued a non-renewal notice after Irma, and the retrofit cut air infiltration so sharply the owner felt the difference in the first thunderstorm.
- Weep covers packed with salt crystals. On ocean-facing elevations, low-grade aluminum weep covers fill with white salt bloom that blocks drainage. Water then holds in the sash track, corrodes the rollers, and the window starts dragging. Marine-grade covers with larger drainage slots and regular cleaning stop the cycle.
Pricing for Window Installation in Key Biscayne, FL
Here’s what moves your price: opening count, wind-zone elevation, floor height, frame material (aluminum is your primary choice on the island), and whether your building requires full Large Missile Impact compliance. A standard impact single-hung for a bedroom runs somewhere around $900 to $1,800 installed. A fixed picture window in a living room might be $800 to $1,500. Big custom openings, bay and bow builds, and 3-lite sliders climb toward $2,500 to $5,000. Whole-home packages in the interior of the island generally fall between $8,000 and $25,000, and larger waterfront homes can exceed that.
You’ll get a written, line-item quote with fixed pricing. No change orders later. No “we underbid to get the job” games. Call (904) 478-8983 and schedule the free measure.
What Window Installation Costs in Key Biscayne
Impact windows in Key Biscayne run $800 to $1,500 per window installed. Impact single-hung units run $900 to $1,800 depending on size and design pressure. Large or custom openings, like a full wall slider or a bay window on a waterfront home, run $2,500 to $5,000. A whole-home package on the island runs $8,000 to $25,000 and up, depending on how many openings you have and how high your unit sits above grade.
In Key Biscayne, the marine-grade add-ons are not optional. Stainless hinge pins, stainless fasteners, sealed corner construction, and weep covers sized for salt spray all add cost over the inland spec. We’ll show you the line items, and we’ll explain why omitting them means paying for a re-do inside a decade. Free in-home measure, written quote, fixed price. Call (904) 478-8983.
Florida Pays You Back
Florida actually stacks three separate incentives for Key Biscayne homeowners who install impact windows. My Safe Florida Home offers matching grants up to $10,000 for qualifying wind-mitigation upgrades. There’s also a Florida sales-tax exemption on impact-resistant windows and doors, which trims a meaningful chunk off the top on a whole-home project. And the federal 25C energy credit returns 30 percent of the product cost, up to $600 per year, on qualifying energy-efficient units. On top of that, windstorm-premium credits average around 25 percent on the windstorm portion of your policy after a wind-mitigation inspection, which runs $75 to $150. The final numbers are set by your carrier and the state program, but the stack is real. We’ll help you identify which units qualify before you commit.
Every impact window we install in Key Biscayne carries Miami-Dade NOA or Florida Product Approval documentation for its exact configuration. Design pressures are matched to your opening, your elevation, and your exposure, and we never spec a window above a +/-100 rating because that’s not how the math works for residential elevations. And the honest comparison is this: impact windows versus hurricane shutters. Shutters only protect you if someone is home, awake, and willing to lug panels across the driveway in the rain before the storm. Impact windows are in place every hour of every day, with no panels to hang, no tracks to maintain, and no storage to fight over. Choose the permanent protection once and you’re done.
We Also Serve Cities Near Key Biscayne
Our crews serve Key Biscayne and the surrounding South Florida coastline, including Miami Beach, Miami, and Coral Gables. If you own property across the causeway or up the coast, the same marine-grade window standards apply, and we’re already in the area. Dispatch is coordinated from our Miami office, and Key Biscayne jobs get scheduled directly with that team. Call (904) 478-8983 for a free estimate anywhere in the area.
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 Installation in Key Biscayne
Because Key Biscayne sits inside Miami-Dade County’s High Velocity Hurricane Zone, which has stricter impact-standard requirements than the Florida Building Code baseline, and because your condo association’s insurance policy carves out HVHZ-compliant, NOA-documented products as mandatory. An NOA from the Miami-Dade Product Control office is product-specific and configuration-specific, so the exact window and exact opening condition are tested and approved. The statewide Florida Product Approval alone is not enough for most island buildings. We pull the right NOA documentation for your exact unit and size before ordering.
Call (904) 478-8983 and we’ll pull the documents your condo board is asking for.
You can clean surface corrosion off aluminum frames, but jalousie windows are out of compliance with current HVHZ code and many insurers won’t renew a policy while they’re still in place. The louvered glass panels cannot meet impact standards no matter how well the frame is restored. Repairing them buying you time doesn’t solve the insurance non-renewal or the structural non-compliance. If your jalousie frames on Crandon Boulevard or in the Village are corroded to the point where sashes jam or fall out, replacement is the fix that holds. We’ll show you impact-rated alternatives that match your unit’s opening.
Call (904) 478-8983 and we’ll tell you honestly whether a repair is worth your money or you need to replace.
Powder-coated marine-grade aluminum in a light color holds up longest against Key Biscayne’s salt spray. Dark anodized finishes absorb heat and salt cakes on the surface, which accelerates pitting, so we generally steer ocean-facing owners toward lighter powder coats or marine-grade fluoropolymer finishes available from premium brands like PGT and ES Windows. Stainless-steel hardware is non-negotiable; standard zinc-plated hardware will rust through within two years on an ocean-facing elevation. Your frame finish, your hardware finish, and your weep covers all need to be specified for marine exposure from the start. Otherwise you’ll pay to replace the hardware before the glass even ages.
Call (904) 478-8983 for a quote with the right finish specified for your elevation.
Impact windows that carry a proper Miami-Dade NOA and are documented by a licensed wind-mitigation inspection typically do reduce the windstorm portion of your premium on Key Biscayne. The average windstorm-premium credit after a wind-mitigation inspection runs around 25 percent on the windstorm line, and the inspection itself costs $75 to $150. Your insurer sets the final amount and not every carrier credits the same way, so don’t accept a promise without seeing your own policy’s math. But the credit is real, documented, and required by Florida law when your home meets the thresholds. We’ll give you the NOA paperwork your inspector needs.
Call (904) 478-8983 and we’ll get you the documentation your insurer’s inspector will ask for.
On an oceanfront Crandon Boulevard elevation, weep covers and gaskets should be inspected every 12 months and replaced every 3 to 5 years. Salt spray crystallizes inside weep channels and clogs drainage faster here than anywhere inland, and when the covers pack with salt bloom, water holds in the sash track and accelerates corrosion. UV and salt together harden gaskets, so they lose their seal and start letting wind-driven rain into the frame. It’s a small maintenance line item that prevents the expensive repair later. Our crews know the Crandon Boulevard failure pattern and can inspect while we’re on-site for any other work.
Call (904) 478-8983 and schedule an inspection before next hurricane season.
Written by Ed Winslow, Owner at Winslow Windows & Doors. Ed founded Winslow in 2011 and stands behind every installation with the Done Right Promise. That’s the one down the road.
Call (904) 478-8983 for a free window installation estimate in Key Biscayne. A live person answers, 24 hours a day, 7 days a week.
Six Reasons Homeowners Choose Winslow 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.