Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Custom & Geometric Windows Across Three Lakes
Custom and geometric window replacement in Three Lakes typically runs $1,200-$3,800 per opening, with oversized or radius-top units landing between $2,500 and $5,000. Most projects move from measure to install in four to six weeks once the units are fabricated, and because we’re a Miami-Dade HVHZ specialist, every window we install carries an active Notice of Acceptance, so your inspection won’t turn into a fight with the building department. If you live in Three Lakes and you’re staring at a corroded aluminum picture window that no longer closes right, call (727) 620-6983 for a free in-home measure and a written, line-item quote.
We know this neighborhood’s housing stock better than most because we’ve been crawling through 1970s and 1980s CBS ranch homes here for years. Original single-pane aluminum frames, jalousie sliders that leak air, wood bucks that have rotted from the inside out. None of it surprises us anymore. What that means for you is an estimate that’s built on what we already know about Three Lakes construction, not a guess.
Why Winslow Windows & Doors Is Three Lakes’s Preferred Custom & Geometric Windows Company
Winslow Windows & Doors has been locally owned and owner-operated since 2011, and Ed Winslow’s name is on the business, the license, and every job we do in Three Lakes. We don’t hand your project to a subcontractor you’ve never met. The crew that measures your opening is the crew that installs it, background-checked and in uniform before they step through your door.
Three Lakes homeowners call us for two reasons that come up over and over. The first is Miami-Dade NOA compliance. If your custom window doesn’t carry an active Notice of Acceptance, the county won’t pass it, and your insurance carrier may use that as a reason to non-renew your policy. We install PGT, CGI units that are engineered for HVHZ wind loads and documented for the inspector. The second reason is that we answer the phone. A live person picks up, 24 hours a day, seven days a week. Not a call center. Not a voicemail loop. That matters when you’re mid-project and need a straight answer.
Our standing offers apply to every Three Lakes customer: $40 off any repair over $200, free second opinions on written estimates, no trip charge inside the home county, and a permanent 10% discount for seniors and veterans. Upfront pricing, no surprises on the invoice. The Done Right Promise backs the work. If it’s not done right, we make it right. A century of accountability, stated plainly.
Our Custom & Geometric Windows Services in Three Lakes
We’re the Custom & Geometric Windows team that Three Lakes homeowners call when a standard square replacement won’t do. Whether you’re trying to preserve the mid-century character of a CBS ranch or you’re opening up a wall with a massive radius-top statement window, we handle the engineering, the fabrication order, and the install. Here’s what we do most in Three Lakes.
Custom Impact Windows
In Three Lakes, custom impact windows are not a style upgrade. They’re a code requirement under Miami-Dade’s High Velocity Hurricane Zone rules. Every replacement window in this CDP must carry an active NOA, which means we’re matching your opening dimensions to a manufacturer’s approved product line, not assembling something in the field and hoping the inspector doesn’t check. PGT’s WinGuard and CGI’s Estate Collection are the two lines we spec most often here because their NOA documentation is clean and their lead times are predictable.

Geometric & Shaped Windows
Triangles, trapezoids, octagons, half-rounds. Three Lakes homes from the 1980s and 1990s occasionally feature these shapes as accent windows, usually over entry doors or in gable ends. The original aluminum frames are almost always corroded beyond salvage, and the glass is single-pane and non-impact. We replace them with laminated impact glass in a matching geometric shape, set into a new thermally broken vinyl or aluminum frame that carries the same NOA as any rectangular unit. The shape changes. The engineering doesn’t get relaxed.

Arched & Curved Windows
Arched windows are where Three Lakes projects get interesting, because the original wood or aluminum arch framing is frequently rotted or warped. The Everglades humidity eats wood bucks from the inside out, and by the time we see it, the arch no longer holds a clean curve. We rebuild the radius with a pressure-treated buck or composite material before ordering the curved tempered-laminated glass unit, so the new window doesn’t inherit the old frame’s geometry problems. The result is an arch that stays arch-shaped for decades.

Oversized Openings
Oversized openings in Three Lakes CBS homes usually start life as a single-pane aluminum slider or a fixed picture window spanning eight to twelve feet. When we replace them with impact-rated geometric units, the engineering requirements scale sharply. Heavier laminated glass means more load on masonry anchors. Taller glass means higher design pressure ratings are required at the top of the opening. We calculate the loads per the Florida Building Code, spec the frame and anchoring to match the approved NOA, and pull the permit so the inspection is a formality, not an obstacle.

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 Three Lakes
We install and service custom and geometric windows from PGT, CGI, and Therma-Tru, and we’re an authorized installer for all of them. That means warranty claims go through us as the installing contractor, not through a reseller who disappears after the check clears. For Three Lakes customers, we maintain relationships with local supplier warehouses, so hardware replacement and warranty parts move faster than they would through an out-of-state channel. When you need a sash, a balance, or a full custom unit, we’re not starting from zero.
Common Custom & Geometric Windows Problems We See in Three Lakes Homes
- Corroded aluminum frames from constant Everglades humidity. Original windows on 1970s and 1980s CBS homes oxidize until sashes bind or jam. Repairs buy time, but in Three Lakes, full replacement with impact-rated units is the near-universal outcome.
- Non-compliant single-pane glass in an HVHZ zone. Those original jalousie and aluminum slider windows fail current Miami-Dade wind-load requirements outright. If a storm test were run today, the glass would not pass. Insurance carriers know this and are increasingly declining renewals without documented NOA replacement.
- Decayed wood bucks behind original frames. The rough opening framing in older Three Lakes homes rots silently. By the time the window is removed, the buck may crumble. We rebuild the opening to code before setting the new unit, which is why our quotes include an allowance for this rather than a surprise change order.
- Undersized anchoring for heavier laminated glass. Original aluminum frames didn’t need much anchorage. Impact-rated geometric windows weigh significantly more and catch more wind. New masonry anchors, properly set into CBS walls, are not optional. Our installs pass inspection on the first attempt because we don’t skip the anchoring step.
What Custom & Geometric Windows Costs in Three Lakes
Here are honest ranges for Three Lakes projects, based on what we’ve quoted and installed in this market.
- Standard impact windows: $800-$1,500 per window installed
- Impact single-hung windows: $900-$1,800 per window installed
- Custom geometric or oversized openings: $2,500-$5,000 per opening
- Whole-home packages: $8,000-$25,000+, depending on opening count and glass specs
What moves the number in Three Lakes specifically? The opening count, first and foremost. A 1970s CBS ranch with eleven original aluminum windows is a bigger job than a 1990s home with six. Second, the wind zone. Three Lakes sits entirely within HVHZ, so there is no cheap non-impact shortcut available. Every unit must meet Miami-Dade NOA standards. Third, floor height matters less here than in coastal high-rises because most homes are single-story, but larger glass panels push the design pressure requirement up. Fourth, frame material. Thermally broken aluminum costs more than vinyl, but some HOAs in and around Three Lakes require aluminum or specific finish colors for architectural consistency.
The best way to get a real number is a free in-home measure. We walk the property, check the existing frames and bucks, and hand you a written quote with line items. Call (727) 620-6983 to schedule yours.
Pricing for Custom & Geometric Windows in Three Lakes, FL
You’ll notice the ranges above are wider than what a big-box installer might quote. That’s because custom and geometric work is exactly that: custom. A trapezoid accent window over a Three Lakes entry door is not an off-the-shelf product. It’s drawn, engineered, fabricated, and then installed. Our pricing reflects the actual work, not a generic square-foot multiplier. We write allowances into the contract for framing repairs, so if your wood buck is rotted, the cost is already sitting in the quote as a named line item with a defined scope, not a vague “TBD” that becomes a surprise invoice later. Fixed pricing, written approvals for any change, and no change orders unless you sign off first. Call (727) 620-6983 for a free estimate and a quote you can actually compare.
Florida Pays You Back
Three Lakes homeowners have several incentive programs available when replacing windows with impact-rated units. The My Safe Florida Home program provides matching grants up to $10,000 for qualifying wind-mitigation upgrades, which includes impact windows and doors. Florida also exempts impact-resistant windows and doors from sales tax, which saves you roughly 6-7% off the top. The federal 25C energy credit offers 30% of product cost, up to $600 per year on qualifying energy-efficient units. And after a wind-mitigation inspection ($75-$150), most South Florida homeowners see windstorm premium credits averaging around 25% on the windstorm portion of their policy. Programs and carrier rates set the final numbers, so we don’t guarantee any specific dollar amount, but the stack is real and worth pursuing. We’ll provide the NOA documentation and closing paperwork your insurer needs.
One comparison worth making: impact windows versus accordion shutters. Shutters work when someone is home to close them, and they do nothing for energy efficiency, noise, or daily light quality. Impact windows protect your home permanently, no panels to hang at 11 p.m. as a storm approaches. Insurance carriers reward the permanent protection. That’s why the replacement pipeline in Three Lakes is driven by insurance pressure as much as storm damage.
How Miami-Dade’s HVHZ Code Shapes Every Three Lakes Window Job
Three Lakes falls entirely within Miami-Dade County’s High Velocity Hurricane Zone, the strictest wind-load jurisdiction in the United States. Every replacement window and door installed here must carry an active Miami-Dade Notice of Acceptance, a product approval standard more demanding than the rest of Florida and most of the country. That’s not a sales talking point. It’s the permitting reality.
Because Three Lakes was built out largely between the 1970s and early 1990s, the dominant housing stock is single-story CBS ranch homes with original single-pane aluminum windows that predate Hurricane Andrew’s code overhauls. Those units are wholly non-compliant with current HVHZ impact requirements. When a Three Lakes homeowner calls us about a window that’s fogged, corroded, or stuck, the answer is almost never a repair. It’s a full replacement with impact-rated glazing and NOA documentation. The math is simple: the county won’t pass a repair on a non-compliant frame, and insurance carriers won’t renew a policy without proof of impact protection. So we don’t sell repairs that won’t hold up. We replace the window right, anchor it into the CBS wall the way current code demands, and hand you a permit that closes clean.
On a 1980s CBS ranch off SW 120th Avenue, our crew replaced a corroded aluminum picture window with a custom radius-top impact window from PGT’s WinGuard line. The original jamb had rotted from decades of Everglades humidity, so we installed a pressure-treated buck with epoxy-set masonry anchors before setting the new unit. The project passed Miami-Dade inspection on the first attempt, and the homeowner’s insurer renewed their policy after we submitted the NOA documentation. That’s the job, start to finish, done the way Three Lakes requires it.
The Wall-Open Reality of Older Three Lakes Remodels
Opening up an older Three Lakes home for custom or geometric windows almost always turns up the same three things: outdated or damaged framing, failed waterproofing, and code upgrades that a permit triggers once the wall is open. The original wood buck around an old aluminum window is often spongy from decades of humidity exposure. The header may be undersized for a wider opening. The flashing is usually missing or incorrectly lapped. None of this is visible until the old window comes out.
Here’s how we handle it, because this is the single biggest reason a window quote moves in Three Lakes. We inspect first. Before the contract is signed, we measure carefully and probe the existing rough openings where we can. We write allowances into the contract for buck replacement, masonry anchoring, and header reinforcement, with clear scope definitions and unit pricing attached. If we discover something outside the allowance during installation, we stop, document it, price it, and get your written approval before we touch another stud. No midnight change orders. No “while we’re in here” surprises. You know exactly what you’re approving, in writing, every time. That’s how a Three Lakes window project should run.
We Also Serve Cities Near Three Lakes
Our crews serve Three Lakes and the surrounding South Florida communities, including Fountainebleau, Miami, Hialeah, and Doral. If you’re in a neighboring city and dealing with the same HVHZ window requirements, the same standards apply. Call (727) 620-6983 and ask for a free estimate. We’ll bring the same NOA documentation discipline to your door.
Serving Three Lakes, FL - Our Local Coverage Area
We’re based in the Three Lakes 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 & Geometric Windows in Three Lakes
Yes. Every replacement window installed in Three Lakes, including custom geometric, arched, and oversized shapes, must carry an active Miami-Dade Notice of Acceptance. The county inspector will not pass the work without it, and your insurance carrier may use its absence as a reason to non-renew. We only install custom windows from manufacturers with current NOA approvals, and we pull the permit and submit the documentation for you. Call (727) 620-6983 to discuss your specific opening and get a free estimate.
In most cases, yes. We match the original opening dimensions and geometry, whether it’s an arch, a trapezoid, or a fixed picture window, and we rebuild the frame buck and anchoring rather than the entire wall. The exception is when the original header is undersized or the CBS wall itself is compromised, which happens on a minority of Three Lakes homes. We’ll know after the inspection, and if wall work is needed, it’s written into the quote as a defined allowance before you sign. Call (727) 620-6983 to schedule the free inspection.
It typically does, because Miami-Dade carriers reward documented NOA impact protection with windstorm premium credits that average around 25% on the windstorm portion of the policy. After a wind-mitigation inspection ($75-$150), your carrier recalculates the rating based on the upgraded protection. We provide the NOA paperwork and closing documents your insurer requires. Call (727) 620-6983 and we’ll walk you through what to request from your carrier.
We rebuild it. A missing or decayed wood buck is one of the most common findings on older Three Lakes arched windows. We template the arch radius, fabricate a new pressure-treated or composite buck off-site, set it into the CBS opening with epoxy-set masonry anchors, and then order the custom curved glass unit to match. The window goes in clean, the arch holds its shape, and the assembly passes Miami-Dade inspection. Call (727) 620-6983 for a free estimate on arch replacement.
Yes, and this is where we see unlicensed installers cut corners. Oversized glass panels catch more wind, which means higher design pressure ratings are required, especially at the top of the opening. The anchoring must be engineered for the heavier laminated glass, not just the old single-pane weight. We calculate the loads per the Florida Building Code, match the unit to an approved NOA for that size and pressure rating, and anchor accordingly. Call (727) 620-6983 and we’ll explain the numbers for your specific opening.
Get Your Free Custom & Geometric Window Estimate in Three Lakes
If you live in Three Lakes and you’re ready to replace those original aluminum windows with impact-rated custom or geometric units, let’s talk. Call (727) 620-6983 and a live person will answer. We’ll schedule a free in-home measure, inspect the existing openings, and hand you a written quote with real numbers and defined allowances. Ed’s name is on the door and on every job we do. The one down the road.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving Three Lakes and surrounding South Florida communities.
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.










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