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 North Miami
Custom and geometric window replacement in North Miami runs between $2,500 and $5,000 per opening for a true custom shape, while a whole-home retrofit of a 1950s CBS rancher typically lands between $8,000 and $25,000. Most of that cost is driven by Miami-Dade’s NOA requirement and the salt-air materials upgrade that North Miami’s location near Biscayne Bay makes necessary. At Winslow Windows & Doors, we’ve been doing this work in North Miami long enough to know that a cheap inland-spec window here fails within two to three years. Call (844) 901-4551 for a free in-home measure and a written quote that accounts for your home’s actual conditions, not a generic price sheet.
Ed Winslow’s name is on the door, and on every job we do in North Miami. When you call, a live person answers. That matters when you’re looking at a corroded jalousie frame and wondering whether the whole wall needs to come open before hurricane season. We’ll tell you straight.
Why Winslow Windows & Doors Is North Miami’s Preferred Custom & Geometric Windows Company
North Miami is a city of concrete block ranchers and split-levels built mostly between 1955 and 1972, and almost all of them share the same original problem: jalousie windows and single-pane aluminum sliders that predate every impact and energy code on the books today. We know these houses because we work on them constantly. When a North Miami homeowner calls about an arched window, a radius corner, a trapezoid over a door, or an oversized picture opening, we already know what the rough opening is going to look like behind the stucco. That knowledge keeps the job on schedule and keeps the inspector happy.
Our reputation in North Miami comes from the same place our Custom & Geometric Windows work always has: we frame the opening correctly, use marine-grade aluminum and stainless hardware, pull the permit, and pass the HVHZ inspection the first time. We’ve had North Miami customers refer us to neighbors on Keystone Point, along NE 135th Street, and through the residential blocks of 33161 for more than a decade. Ed Winslow owns the company, carries the license, and stands behind the Done Right Promise: if it’s not done right, we make it right. No fine print and no call center to argue with.
Our Custom & Geometric Windows Services in North Miami
Custom Impact Windows
Every custom impact window we install in North Miami carries a Miami-Dade Notice of Acceptance. That’s not a preference, it’s a legal requirement in the High-Velocity Hurricane Zone, and we won’t install anything without it. Our custom impact windows are built to your opening’s exact design pressure, which in North Miami means accounting for proximity to Biscayne Bay, home elevation, and the fact that your 1960s CBS walls weren’t built for modern wind loads. We handle the engineering, the NOA documentation, and the permitting.

Geometric & Shaped Windows
Triangles, trapezoids, pentagons, radius corners, octagons. North Miami’s mid-century homes often have these shapes over entry doors or in gable ends, and most of them are original single-pane aluminum that leaks and corrodes. We measure, template, and order each geometric window as a one-off unit from brands like PGT and CGI, then install it in a reframed opening with stainless fasteners and sealed joints. Salt air is not optional to design for here. It’s the whole game.

Arched & Curved Windows
Arched windows are common on North Miami’s 1950s and 60s CBS homes, especially in front elevations facing the street. Matching that arch while meeting HVHZ impact standards requires a custom template and a frame that won’t sag under design pressure. We’ve replaced arched units on homes near Keystone Point where the original jamb hardware had rusted through from two seasons of Biscayne Bay salt air. We reframe, patch stucco, and install a window that actually fits the curve, not a rectangular insert crammed into an arched hole with a filler panel. That’s the difference between a window and a retrofit with a conscience.

Oversized Openings
An oversized custom window or sliding glass wall in North Miami is a serious engineering project, not a bigger version of a standard window. The wind pressures at the top of a ten-foot opening are substantially higher than at the sill, and Miami-Dade wants to see the numbers. We design oversized openings with reinforced frames, laminated impact glass, and anchoring schedules that hold up to HVHZ inspection. If you’re opening a wall to Biscayne Bay views, you do it once, and you do it with a window that carries its own NOA.

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 North Miami
We’re an authorized installer for PGT, CGI, CWS, and ViewLux, among others, which means North Miami customers get genuine factory warranties and factory-backed engineering on every custom geometric unit. The brand matters because the frame material matters. We specify marine-grade aluminum and stainless hardware on every coastal installation, and we match the brand to the opening’s design pressure. If you already have a written estimate from another company using one of these brands, bring it to us. We’ll give you a free second opinion and tell you whether the spec actually fits North Miami’s wind zone.
Common Custom & Geometric Windows Problems We See in North Miami Homes
- Salt-air corrosion on geometric frames. Standard aluminum frames and zinc hardware along NE 135th Street and other Biscayne Bay-adjacent blocks pit visibly within 18 to 24 months. Once the jamb hardware corrodes, the sash misaligns, the window leaks, and the design-pressure rating is compromised. We use marine-grade aluminum and stainless fasteners specifically to slow this down.
- Rough openings that aren’t square. 1950s CBS construction was forgiving, and many original window openings in North Miami are off by a half-inch or more. Forcing a rigid geometric impact frame into an out-of-square opening cracks the stucco and lifts the jamb under design pressure. We reframe the rough opening before installation, patch the stucco, and anchor properly.
- Non-NOA replacements that trigger insurance non-renewal. A custom geometric window without a Miami-Dade NOA may pass a visual inspection, but it won’t pass an insurance wind-mitigation review. We see North Miami homeowners who bought cheaper inland-spec windows five years ago now facing non-renewal letters. The cheapest window becomes the most expensive over a decade.
- Jalousie-to-impact conversions that cascade. No jalousie product holds a Miami-Dade NOA, so replacing one jalousie window on a 1960s North Miami home often triggers a requirement to bring adjacent openings into compliance. We plan for that from the first measure, so you know the full scope before the first cut, not after the inspector shows up.
What Custom & Geometric Windows Costs in North Miami
Here are the real numbers we quote in North Miami, based on the work we actually do here. A standard impact window runs $800 to $1,500 per unit installed. An impact single-hung lands between $900 and $1,800. A true custom geometric window or oversized opening runs $2,500 to $5,000. A whole-home package on a 1950s or 60s CBS home in North Miami typically falls between $8,000 and $25,000 or more, depending on opening count, floor height, and whether we’re reframing original jalousie openings. The coastal-spec version of the job costs more up front because marine-grade aluminum, stainless hardware, and sealed joints cost more than inland-spec materials. The inland-spec version costs more within a decade, because you’ll replace it. Call (844) 901-4551 for a free in-home measure and a written, line-item quote.
Pricing for Custom & Geometric Windows in North Miami, FL
What moves the price in North Miami more than anything is whether the opening is a standard rectangle or a true geometric shape, and whether the existing rough opening needs reframing. A simple rectangle in a plumb opening is the low end. An arched or radius unit in a 1962 CBS wall that’s moved a quarter-inch in 60 years is a different job. Floor height matters too: a second-story unit carries higher design pressure and costs more to install. We give you one written price before we start, and we don’t change it with change orders. Estimates are free. Call (844) 901-4551 to schedule yours.
Florida Pays You Back
North Miami homeowners have real money on the table right now, and we tell every customer about it. The My Safe Florida Home program offers matching grants up to $10,000 for qualifying wind-mitigation upgrades, which includes impact windows with proper documentation. Florida also exempts impact-resistant windows and doors from sales tax. On the federal side, the 25C energy credit allows 30% of product cost, up to $600 per year, on qualifying efficient units. And after a wind-mitigation inspection, which runs about $75 to $150, many North Miami homeowners see windstorm premium reductions averaging around 25% off the windstorm portion of their policy. We don’t guarantee any dollar figure, because carriers set their own numbers, but we give you every piece of documentation your insurer needs to make the decision.
One comparison worth knowing: impact windows beat hurricane shutters for most North Miami homeowners because the protection is permanent. No panels to haul out at 10 p.m. before a storm, no storage, no forgetting the hardware. The window does its job every hour of every day, and it lowers your insurance the same way shutters do, while your house looks like a house, not a bunker.
We Also Serve Cities Near North Miami
Winslow Windows & Doors serves North Miami and the surrounding communities, including Bay Harbor Islands, Surfside, Golden Glades, and Pinewood. If you’re in any of these areas and need custom impact windows, geometric shapes, or a full home retrofit to meet Miami-Dade code, call (844) 901-4551. We’ll send a background-checked, uniformed technician to measure and quote.
Serving North Miami, FL — Our Local Coverage Area
We’re based in the North Miami 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 North Miami
Because every window replacement in North Miami falls under Miami-Dade County’s High-Velocity Hurricane Zone code, which requires a Notice of Acceptance for every glazed opening, impact-rated or not. There is no exception for geometric windows, and there is no NOA for any jalousie product or early single-pane aluminum frame. If your home still has those original windows, a permitted replacement of one opening can legally trigger a retrofit of adjacent openings. That’s the rule we work under, and the rule your inspector enforces. Call (844) 901-4551 and we’ll tell you what your specific house actually requires.
Yes. We template every arch and curve individually, order the custom unit from PGT or CGI with the exact design pressure your home requires, and install it in a reframed opening with marine-grade aluminum and stainless hardware. The inspector sees a window with an NOA that matches the opening. You get the original architectural line with modern impact glass. Call (844) 901-4551 for a free measure and we’ll show you what the arch will look like before you commit.
The difference is materials and anchors. A coastal-spec geometric window uses marine-grade aluminum, stainless or hot-dip galvanized fasteners, and sealed joints designed for salt-air exposure near Biscayne Bay. An inland-spec unit uses standard aluminum and zinc hardware. In North Miami, the inland-spec version starts corroding within two seasons, especially along NE 135th Street and other bay-adjacent blocks, and the sash misaligns and leaks. The coastal-spec costs more up front. The inland-spec costs more within a decade because you’ll pay to replace it. Call (844) 901-4551 for a quote on the marine-grade version.
Custom fabrication runs four to six weeks from template to delivery. Permitting in North Miami adds time depending on the scope, and a full rough-opening reframe or jalousie-to-impact conversion takes longer than a straight replacement. Once your units arrive, installation is typically done in as fast as a single day per opening. We pull the permit, schedule the inspection, and stand there when the inspector signs off. Call (844) 901-4551 for a timeline specific to your project.
In most cases, yes, because North Miami homeowners without documented impact openings are facing non-renewal or sharp premium increases from Florida carriers. A wind-mitigation inspection, usually $75 to $150, documents the upgrade, and the windstorm portion of your premium typically drops by around 25% on average after verified impact openings are in place. We provide every NOA, product approval, and installation document your insurer asks for. The final number is your carrier’s call. Call (844) 901-4551 to get the paperwork started with a free estimate.
Call Winslow Windows & Doors in North Miami
If you live in North Miami and you’re looking at original jalousie windows, a corroded geometric frame, or an oversized opening that needs impact-rated glass, call (844) 901-4551. You’ll talk to a live person. We’ll schedule a free in-home measure, give you a written quote with line items, and walk you through the NOA and permit requirements for your specific house. Ed Winslow owns the company, his name is on the license, and the Done Right Promise covers every window we install. The one down the road.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving North Miami and Miami-Dade County since 2011.










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