Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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Before
AfterCustom Impact Windows in Miami, FL
Custom impact windows in Miami are impact-rated glazing units built to non-standard sizes, shapes, or configurations – think arched tops, trapezoids, oversized picture frames, or multi-panel arrangements that a stock window simply can’t fill. They meet Miami-Dade County’s Notice of Acceptance (NOA) requirements while fitting the exact opening your architect or builder intended. At Winslow Windows & Doors, Ed Winslow has been measuring, ordering, and installing these units across Miami since 2011, and every job carries the same written promise as our standard work: done right the first time, or we come back.
If you’ve ever tried to get a quote on an unusually shaped window and watched a contractor back out of the driveway without leaving a number, you know how rare it is to find someone who actually does this work instead of just talking about it. Our team handles the full scope – measure, permit coordination, product sourcing through manufacturers like ES Windows and ECO Window Systems, and installation – under one roof. Call (863) 946-5039 any time; a live person picks up around the clock.
This page is part of our broader guide to Custom & Geometric Windows in Miami – if you’re still deciding whether a custom or geometric unit is the right direction, start there first.
When You Need Custom Impact Windows
Not every Miami home fits a catalog. Here are the situations where a custom impact window is the right – and often only – answer:
- Your opening is a non-standard size or shape. Arched, circular, trapezoidal, or oversized openings in Coconut Grove Craftsman homes and Coral Gables Mediterranean revivals can’t accept off-the-shelf units. A custom impact window is the only way to protect those openings without altering the architecture.
- You’re replacing single-pane jalousie or awning windows in older construction. Homes in Little Havana and Silver Bluff built before 1980 often have opening dimensions that no stock impact window matches. Ordering custom means the frame fits tight – no shimming gaps that compromise the impact rating.
- Your existing windows failed a post-storm inspection. After a major storm, Miami-Dade inspectors sometimes flag windows that aren’t NOA-compliant for the opening size. A replacement that’s cut to the rough opening and properly rated resolves the citation without structural modifications.
- Your HOA or historic district requires a specific profile or divided-light pattern. Several Coral Gables and Coconut Grove historic sections mandate muntin configurations or exterior finishes that aren’t available in stock lines. We source custom-fabricated units that satisfy the aesthetic rules and still carry Miami-Dade approval.
- You want floor-to-ceiling or oversized fixed panels for unobstructed Biscayne Bay or pool views. Large-format fixed impact panels in Brickell high-rises and Pinecrest waterfront homes regularly exceed standard size limits. These require engineered custom units with the correct glass thickness and frame reinforcement.
- You’re doing a full exterior renovation and want windows that match a new door or roofline profile. When the shape of a window needs to echo a custom entry door or follow a roofline rake, only a built-to-spec unit delivers a clean result. Mixing custom and stock in the same facade rarely looks right.
Our Custom Impact Windows Process
Custom work has more moving parts than a standard swap. Here’s how we run it from the first phone call to the final inspection:
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Site Assessment and Precision Measurement
Ed or one of our uniformed, background-checked technicians visits the property and takes field measurements of every rough opening – width, height, diagonal, sill slope, and frame depth. We document existing conditions with photos, note any water damage or structural issues in the rough opening, and confirm which windows are in Miami-Dade’s High Velocity Hurricane Zone. This step takes longer than a standard estimate because custom fabrication has zero tolerance for measurement error. There’s no trip charge for homes inside our home county.
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Product Selection and NOA Confirmation
Based on your opening dimensions, aesthetic goals, and budget, we identify the right product line – often ES Windows or ECO Window Systems for custom geometric shapes, both of which carry Miami-Dade NOA listings across a wide range of configurations. We’ll walk you through glass options (laminated, tempered laminated, low-E coatings) and frame finishes before anything is ordered. You get upfront pricing in writing before we place the order – no surprises on the invoice.
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Permit Application
Custom impact windows in Miami require a building permit. We handle the paperwork: product approval documents, NOA sheets, installation drawings, and the permit application to Miami-Dade Building Department. Permit timelines in Miami currently run two to four weeks for residential jobs, and we build that into the project schedule so you’re not waiting on an unplanned delay.
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Fabrication and Order Tracking
Custom units are built to order. Lead times from our suppliers typically range from three to six weeks depending on the complexity of the shape and current factory schedules – a straightforward oversized rectangle moves faster than a multi-radius arch. We keep you posted on production status and notify you as soon as the product ships to our warehouse.
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Installation
Our installation crew follows Miami-Dade approved installation methods for every unit – anchor spacing, flashing, sealant type, and fin or buck attachment are all specified in the NOA and we don’t deviate. For second-story or high-rise work, we use appropriate equipment and take the time the job requires rather than rushing. After the glass goes in, we test every operable sash for smooth operation, verify the weatherstripping seal, and do a water test on the frame perimeter before we pack up.
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Final Inspection and the 36500-Day Done Right Promise
We coordinate the required building department inspection and meet the inspector on site. Once the permit is closed, we do a final walkthrough with you. Every custom impact window Winslow installs is covered by the 36500-Day Done Right Promise – if something isn’t right, we make it right. That’s not a limited warranty period buried in fine print; it’s Ed’s personal standard, attached to every job we complete in Miami.
Custom Impact Windows Pricing in Miami
Custom impact windows in Miami cost more than stock units, and the gap is real enough that you should understand what drives it before comparing quotes. Here are honest ranges based on current Miami market conditions:
| Window Type | Typical Installed Price Range (per unit) |
|---|---|
| Custom single-hung or casement (non-standard size, rectangular) | $650 – $1,100 |
| Custom fixed picture window (oversized, up to ~72″ x 96″) | $900 – $1,800 |
| Custom arch or radius-top unit (simple single radius) | $1,100 – $2,200 |
| Custom geometric (trapezoid, triangle, ellipse, multi-radius) | $1,400 – $3,500+ |
| Large-format fixed panel (floor-to-ceiling, high-rise spec) | $1,800 – $5,000+ depending on glass spec and framing |
What moves the number up or down:
- Glass specification: Standard laminated impact glass is less expensive than low-E laminated with a high solar heat gain coefficient rating – and in Miami’s climate, the low-E upgrade often pays back in reduced cooling costs within a few years.
- Frame material and finish: Standard white or bronze aluminum costs less than custom powder-coat colors or wood-clad interior options required by some historic districts in Coral Gables.
- Opening condition: Rough openings that need structural repairs, rotted buck replacement, or significant waterproofing work before the window goes in add labor cost. We identify these during the assessment rather than after the window is on the truck.
- Permit and inspection fees: Miami-Dade permit fees for window replacements are based on the value of the work. We include permit costs in our written estimate so they’re not a line-item shock later.
- Story height and access: Second-floor and above work adds equipment and labor time, particularly for large fixed panels.
Senior and veteran customers receive a permanent 10% discount on every job – no expiration, no code required. If you already have a written estimate from another contractor, we’ll give you a free second opinion on it.
Call (863) 946-5039 for a free on-site estimate. Pricing is upfront and in writing before any work starts.
Why Miami Homeowners Choose Winslow for Custom Impact Work
There’s no shortage of window companies advertising in Miami. What’s scarce is a locally owned operation where the person whose name is on the business actually stands behind each job. Ed Winslow founded this company in 2011, and in the years since, the work has been done in neighborhoods from Westchester to Brickell, Kendall to Pinecrest. Ed’s name is on the door – and on every job we do.
A few things that set this apart from what you’ll find at a national chain:
- We’re authorized installers for ES Windows and ECO Window Systems, among others – brands that carry broad Miami-Dade NOA coverage for custom configurations. We’re not sourcing through a third-party broker and hoping the paperwork matches.
- Every technician who shows up at your door is background-checked and in uniform. You’ll know who’s coming before the truck pulls up.
- Someone answers the phone at 2 a.m. Not a voicemail. Not an answering service that leaves a message. A live person who can pull up your job details.
- The 36500-Day Done Right Promise is not a marketing phrase. It means if the installation has a problem, we fix it – full stop.
- We’ve been doing this in Miami long enough to know the building department’s current preferences, which inspectors are thorough on anchor spacing, and which neighborhoods have HOA restrictions that affect product selection. That local knowledge shortens the permit process and reduces surprises.
We’re also a full exterior-protection company, which means if your custom window project is part of a larger renovation involving roofing or doors, we can coordinate across trades rather than handing you off to someone else mid-project.
FAQs – Custom Impact Windows
Do custom impact windows in Miami still require Miami-Dade approval?
Yes – all impact windows installed in Miami-Dade County’s High Velocity Hurricane Zone must carry a Notice of Acceptance (NOA) issued by Miami-Dade’s Product Control Division, whether they’re stock or custom. The NOA covers the specific product, frame attachment method, and installation details. When we source a custom unit from a manufacturer like ES Windows or ECO Window Systems, we confirm the NOA covers your exact configuration – including the size and shape – before the order is placed. An oversized unit or an unusual geometry that falls outside a manufacturer’s tested range won’t get a compliant installation, and we flag that before you spend money on fabrication. Call (863) 946-5039 if you want us to review your opening dimensions and confirm what’s achievable.
How long does a custom impact window project take from start to finish in Miami?
From the initial measurement visit to permit closure, most custom impact window projects in Miami run eight to fourteen weeks. The permit application and building department review typically takes two to four weeks; custom fabrication adds another three to six weeks depending on product complexity; and installation itself is usually one to three days depending on the number of units and site conditions. We’ve seen projects in Brickell high-rises run longer due to building management scheduling, and projects in single-family Kendall homes move faster. We give you a project-specific timeline in the estimate, not a generic range, so you can plan around it.
Are custom impact windows significantly more expensive than standard impact windows in Miami?
Custom impact windows typically cost 30% to 80% more per unit than equivalent stock impact windows, depending on the shape complexity and glass specification. A rectangular custom unit that’s simply a non-standard size is on the lower end of that premium; a multi-radius geometric unit with a custom powder-coat finish and high-performance low-E glass is on the higher end. That said, the comparison to stock windows isn’t always meaningful – if your opening is an arch or an oversized fixed panel, there’s no stock unit that fits, so the real cost comparison is custom impact versus modified framing plus a smaller stock unit, which often costs more and compromises the look. We walk through both paths in the estimate so you can make an informed decision. Call (863) 946-5039 for a free estimate on your specific openings.
Can you match the existing window style in my historic Coral Gables home?
In most cases, yes. Coral Gables historic district requirements often specify divided-light patterns, specific frame profiles, or exterior finishes that aren’t available in standard impact lines. We’ve sourced custom-fabricated units with simulated divided lites (SDL) and true divided lites (TDL) that satisfy the Historic Preservation Board’s guidelines while carrying Miami-Dade NOA approval. The key is getting the product specifications confirmed with the Historic Preservation Board before ordering – we build that step into the project timeline. Trying to retrofit a non-approved product after installation is expensive and avoidable. Call us before you order anything, and we’ll help you confirm what the district allows.
Key Takeaways
- Custom impact windows are the right solution for non-standard openings, historic homes, oversized panels, and geometric shapes that stock windows can’t fill.
- All units must carry Miami-Dade NOA approval – we verify coverage for your specific configuration before ordering.
- Installed prices in Miami typically range from $650 per unit for a custom rectangular single-hung to $5,000+ for large-format high-rise panels.
- The full project timeline is eight to fourteen weeks, driven mostly by permit review and fabrication lead time.
- Winslow Windows & Doors has been doing this work in Miami since 2011, and every job carries the 36500-Day Done Right Promise.
- Seniors and veterans receive a permanent 10% discount. Free second opinions on written estimates are always available.
Get a Free Estimate on Custom Impact Windows in Miami
If you have an opening that doesn’t fit a standard window, or you’re trying to match historic architecture while meeting Miami-Dade’s hurricane standards, call (863) 946-5039. Someone answers every call, any hour of the day. Ed will make sure you get an honest assessment of what’s possible, a written price before anything is ordered, and an installation that closes the permit the first time through inspection.
Winslow Windows & Doors. Locally owned since 2011. Licensed, insured, and bonded. The one down the road.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving Miami since 2011.
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.