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 Coral Gables
Custom and geometric window replacement in Coral Gables means one thing more than anything else: matching your home’s original arched or shaped openings without losing Miami-Dade hurricane protection. A true custom impact unit for a Coral Gables Mediterranean Revival home typically runs $2,500 to $5,000 per opening, and the lead time is set by fabrication, not labor. We’re Winslow Windows & Doors, and we’ve handled enough Historic Preservation Board sign-offs to know what gets approved and what gets sent back. Call (904) 478-8983 for a free in-home measure and a written quote that will not change once work starts.
Ed Winslow’s name is on the door, and on every job we do in Coral Gables. Our crews know the difference between an opening in a contributing structure near the Biltmore and a 1950s ranch off Bird Road, because the rules are not the same. We coordinate directly with HPB reviewers, fabricators, and your architect so the radius matches, the divided lites match, and the NOA paperwork matches. That double compliance, hurricane engineering and historic preservation, is the whole game here. Most window companies in South Florida never have to think about it. In Coral Gables, you cannot skip it.
Why Winslow Windows & Doors Is Coral Gables’s Preferred Custom & Geometric Windows Company
We have been doing high-end window and door work in Coral Gables long enough to know that the HPB rejection letter is the most expensive piece of paper a homeowner can receive. Flatten an original arched opening to fit a stock rectangular impact window and the board will deny the permit, even if the window carries a full Miami-Dade NOA. We do not let that happen. Before we order anything, we confirm the radius, the lite pattern, the frame profile, and the glass tint against the district’s design guidelines. Then we put the price in writing and we hold it.
Coral Gables homeowners call us because we answer the phone with a live person, any hour, and because our technicians show up background-checked and in uniform. No ticket numbers, no call centers, no next-business-day callbacks. Ed Winslow owns the company, publishes his address and license number, and stands behind every custom opening we fabricate with the Done Right Promise: if it is not done right, we make it right. That promise means something when the window in question took nine weeks to fabricate and has to satisfy a preservation board.
Our Custom & Geometric Windows Services in Coral Gables
Every one of these jobs starts the same way: we measure the opening, document the existing sash, check the NOA requirements for that specific elevation, and confirm what the HPB expects to see. Then we order. Here is what we do most often in Coral Gables.
Custom Impact Windows
Custom impact windows in Coral Gables are not an upgrade. They are the law. Every replacement window in Miami-Dade’s High-Velocity Hurricane Zone must carry a Notice of Acceptance, and off-the-shelf units almost never fit the arched or oddly proportioned openings in the city’s older homes. We fabricate to the exact rough opening, not the closest stock size, and we match the original sightlines so the home still reads as the architect intended.

Geometric & Shaped Windows
Triangle transoms, half-rounds, trapezoids, octagons. Coral Gables has them all, and most are original to homes built between the 1920s and 1950s. A geometric or shaped window in this city usually requires custom framing, custom glazing, and custom flashing because nothing about the opening is standard. We have fabricator relationships that can bend impact-rated frames to match odd angles, and we pre-order the long-lead glass before demolition so the opening is never left exposed.

Arched & Curved Windows
Arched windows are the signature of Coral Gables’s Mediterranean Revival housing stock, and they are where most replacement contractors fail. The HPB will reject a job that flattens an original arched opening to accommodate a rectangular unit, full stop. We radius-match each arched sash to within an eighth inch of the original, fabricate the curved impact-rated frame, and submit the drawings for approval before the old window comes out. It is slower. It is also the only way to get the permit signed.

Oversized Openings
Oversized openings change the engineering conversation. A fixed picture window that spans ten feet in a Coral Gables living room carries a different design pressure than a three-foot casement, and it typically lands in the $2,500 to $5,000 range once custom fabrication, reinforced framing, and heavier glass enter the picture. We engineer to the opening, not to a catalog, and we coordinate the structural work with your contractor or handle it ourselves.

What happens when you call
- 1
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 Coral Gables
Winslow is an authorized installer for CWS, ES Windows, and Mr-Glass, among other premium lines, and we keep local parts availability in mind when we spec a Coral Gables job. That matters when a sash needs servicing in ten years and the fabricator has since changed profiles. We also work directly with CGI and PGT on impact-rated units, and we do not push a brand because it is easy to order. We push what clears both the HVHZ and the HPB. For Coral Gables, CWS and ES Windows have been reliable on curved and geometric work because their engineering tolerances hold up under Miami-Dade’s design pressure testing.
Common Custom & Geometric Windows Problems We See in Coral Gables Homes
- Flattened arches on contributing structures. A previous owner or a hasty contractor drops a rectangular impact window into an arched opening, the HPB flags it during a later review, and the homeowner is left with a non-compliant install and a re-fabrication bill. We see this on homes throughout the city’s historic districts, and it is fully avoidable with the right fabricator on the front end.
- Coral rock anchors that do not hold. Coral Gables sits on coral rock, and anchoring a new custom frame into it with standard concrete anchors is a slow-motion failure. We use epoxy-set threaded rod because coral rock does not behave like poured concrete, and a frame that shifts in its jamb loses its seal within the first season.
- Over-tinted impact glass in period rooms. A low solar heat gain coating is great for energy but can visibly darken a living room that was designed around warm, clear light. We check the tint against the room before ordering, because an HPB approval does not help if the family hates the result.
- Dense canopy damage to original wood sashes. Coral Gables’s mature banyan and live oak canopy is beautiful, and it holds humidity against original wood casement frames year-round. By the time a homeowner notices the rot, the sash is usually beyond repair, which means the replacement is a custom fabrication, not a parts order.
Pricing for Custom & Geometric Windows in Coral Gables, FL
You will not get a meaningful fixed price over the phone, and you should be suspicious of anyone who gives you one. What you can expect: a standard custom impact window in Coral Gables runs $800 to $1,500 per opening when the unit is a replaceable size and the opening is square. Arched, curved, and geometric work lands between $2,500 and $5,000 per opening because the frame, glass, and engineering are all one-off. Whole-home packages on larger homes run $8,000 to $25,000 and up. What moves the number in Coral Gables specifically is the HPB requirement for radius-matching and period lite patterns, plus the coral rock anchoring that adds labor to nearly every install in the city’s older districts. We measure, spec, and quote in writing before we order anything, and the quote does not move. Call (904) 478-8983 to schedule a free in-home measure.
What Custom & Geometric Windows Costs in Coral Gables
Impact windows in Coral Gables generally land between $800 and $1,500 per window installed when the unit is a standard custom size. Impact single-hung units start around $900 and run to $1,800 depending on size and finish. Large or custom openings, the arched and geometric work we specialize in here, fall between $2,500 and $5,000 per opening. Whole-home packages run $8,000 to $25,000 or more depending on opening count, floor height, and frame material. In Coral Gables, the price is driven hardest by whether the opening is original and contributing, because HPB compliance adds design time, fabricator coordination, and sometimes a second round of review. Higher floors change design pressure, which changes the glass and frame engineering. We will tell you the price before we order, in writing, and we will not change it once work begins.
Florida Pays You Back
The incentives stack if your Coral Gables home qualifies. Florida’s My Safe Florida Home program has offered matching grants up to $10,000 for qualifying wind-mitigation upgrades, and impact-resistant windows and doors are sales-tax exempt in Florida. On the federal side, the 25C energy credit allows up to $600 per year on qualifying efficient units. After a wind-mitigation inspection, which typically costs $75 to $150, many homeowners see windstorm-premium credits averaging around 25% on the windstorm portion of their policy. We cannot guarantee what your carrier will approve or what the state will fund, those numbers are set by the programs and the insurers. But we will give you the documentation to submit with your claim. One comparison worth making on the front end: impact windows versus hurricane shutters. Shutters cost less to install, but they only protect you when someone is home to hang the panels. Impact windows protect the house permanently, and in Coral Gables they are also the path to keeping your historic openings intact rather than covered in tracks and hardware.
We Also Serve Cities Near Coral Gables
Our Coral Gables crews work regularly in Coral Gables and the surrounding cities, including Miami, Key Biscayne, and Miami Beach. The rules change as soon as you leave Coral Gables city limits, so if you are in a neighboring city, we will walk you through your specific compliance picture. For custom and geometric work anywhere in the area, our Custom & Geometric Windows team handles the full job, from first measure through final inspection.
Serving Coral Gables, FL - Our Local Coverage Area
We’re based in the Coral Gables 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 Coral Gables
Because the Coral Gables Historic Preservation Board will reject the permit. Even a fully Miami-Dade NOA-compliant rectangular impact window is a nonstarter if it flattens an original arch on a contributing structure. The board’s design standards require the replacement to match the original radius and lite pattern. The fix is a custom-bent impact-rated frame made to the exact arch, and that is what we fabricate. Call (904) 478-8983 and we will measure the opening and tell you exactly what the HPB needs to see before you spend a dollar on glass.
Yes, and it happens regularly with the right fabricator. The impact rating comes from the laminated glass interlayer and the frame engineering, not from the shape. We have installed curved and geometric units that carry full NOA approvals and still match the original divided lite pattern down to the muntin width. On a 1920s Mediterranean Revival home near the Biltmore Golf Course, our crew replaced original wood casement windows set in arched coral rock openings with custom-bent CGI impact-rated frames, matching the historic divided lite pattern while using laminated glass to satisfy HVHZ design pressure. The HPB sign-off came only after our fabricator radius-matched each arched sash to within an eighth of an inch.
It adds anchoring time to every opening, and it is the main reason a Coral Gables install takes longer than the same job in a poured-concrete or CMU house. Coral rock does not hold standard concrete anchors reliably, so we epoxy-set threaded rod into the substrate before the new frame goes in. That step is not optional, and skipping it is how you get jamb movement and seal failure within the first hurricane season. The fabrication lead time drives the calendar more than the install labor does, but coral rock anchoring is a real factor once the units arrive.
Fabrication runs four to six weeks on most custom units, and the HPB review can add additional time on contributing structures. The glass, the curved frame, and the radius-matched sash are all made to order, and nothing is sitting on a shelf. We pre-order the long-lead insulated glass units before demolition so labor never holds the calendar. Once your units arrive, most openings are installed in as fast as a single day. Call (904) 478-8983 for a timeline specific to your opening count.
Yes, but the effect is smaller than it would be on an exposed lot. A dense canopy already shades the house, so the incremental cooling gain from new impact glazing is modest compared to a Miami Beach condo with full western exposure. What the canopy does give you in Coral Gables is humidity trapped against the frame, which is why we recommend vinyl or aluminum-clad custom frames over raw wood in most shaded locations. The energy savings are real but secondary; the primary benefit on a shaded Coral Gables home is a sealed, rot-resistant opening that does not need repainting every three years.
Call Winslow Windows & Doors for Custom & Geometric Windows in Coral Gables
If you own a Coral Gables home with an arched or shaped opening, you already know the big box installer down the road is not going to solve your problem. We will. Ed Winslow has been running this company since 2011, and the Done Right Promise means we stand behind every custom unit we fabricate and install. Free estimates, written line-item quotes, the $40 repair discount over $200, the free second opinion on written estimates, the 10% standing discount for seniors and veterans. Call (904) 478-8983 today, and a real person will pick up. The one down the road.
Written by Ed Winslow, Owner at Winslow Windows & Doors, serving Coral Gables 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.










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