Geometric & Shaped Windows

Geometric & Shaped Windows in Miami, FL | Winslow Windows & Doors

Geometric and shaped windows are the architectural statement pieces of a South Florida home: half-rounds over a front entry, octagonal portholes in a stairwell, triangular gable accents, curved-top transoms. Done right, they’re beautiful. Done wrong, they leak. Winslow Windows & Doors supplies and installs custom-fabricated triangular, hexagonal, octagonal, and curved impact-glass configurations engineered for Miami-Dade’s High-Velocity Hurricane Zone. We handle the measuring, the NOA documentation, and the installation. Call (844) 901-4551 to talk through your opening.

Call (844) 901-4551

Product Overview — Geometric & Shaped Windows

Most window companies treat a shaped window as an afterthought. In Florida, that’s a real problem. A hexagonal window in a Coral Gables living room isn’t decorative if a hurricane decides otherwise. It’s a hole in your envelope, and it has to perform like any other opening in the house.

Our Geometric & Shaped Windows are custom-fabricated to your opening, not adapted from a nearby stock size. You give us the rough opening or the architectural drawing, and we build to it. Triangular, hexagonal, octagonal, and curved-top configurations are all available. Laminated impact glass with a PVB interlayer holds the glass in the frame under impact, which matters just as much on a round window as it does on a six-foot slider.

We offer these in aluminum and vinyl frame materials. Aluminum suits the clean sightlines that Miami’s modern and mid-century homes call for. Vinyl is the choice when budget and thermal performance lead the conversation. Either way, the fabrication is per-opening, so the design pressure rating, the NOA documentation, and the installation all line up with what actually gets put in your wall.

Where do shaped windows show up in Miami? Half-rounds and elliptical transoms over French doors in Pinecrest. Octagonal vents in Coconut Grove attic gables. Triangular fixed units in Kendall stairwells. Hexagonal centerpieces in Key Biscayne entry towers. Each one is a custom project, and each one gets the same wind-zone engineering as the rest of the house.

Technical Specifications

• Frame materials: Aluminum or vinyl, selected per opening and finish preference
• Maximum size: Custom fabricated to order — there’s no stock size chart; we build to your rough opening or drawing
• Glass options: Laminated impact glass with PVB interlayer, Low-E insulated glass, tinted glass, clear glass
• Finish options: White, almond, bronze, black, tan
• Profiles: Triangular, hexagonal, octagonal, and curved configurations
• Compliance documentation: Miami-Dade NOA and Florida Product Approval numbers available per configuration
• Design pressure: Matched to your wind zone, up to +/-100 — never higher
• Code basis: Engineered to Florida Building Code (FBC) High-Velocity Hurricane Zone (HVHZ) requirements

This is a made-to-order product. Every shaped window that leaves the fabrication line has a specific wind-zone calculation behind it. That’s what keeps your permitting process clean in Miami-Dade County.

Hurricane & Compliance Performance

Laminated Impact Glass
The impact glass in our shaped windows uses a PVB (polyvinyl butyral) interlayer. Under impact, the glass may crack, but the interlayer holds the fragments in place and keeps the pane in the frame. The window stays sealed. Your home stays protected.

Miami-Dade NOA / Florida Product Approval
NOA and Florida Product Approval numbers are issued per configuration, so the half-round over your front door has its own documentation trail. We provide the applicable numbers on your specific quote, and you’ll submit them with your permit package.

FBC / HVHZ Compliance
Every shaped window we sell is engineered to Florida Building Code High-Velocity Hurricane Zone requirements. HVHZ is the stricter code regime that governs Miami-Dade and Broward counties. This isn’t an upgrade — it’s the baseline you’re required to meet here.

TAS 201 / TAS 202 / TAS 203 Testing Context
HVHZ-rated products are tested under a specific protocol family. TAS 201 covers large-missile impact, TAS 202 covers cyclic wind-pressure loading, and TAS 203 covers forced-entry resistance. These tests simulate real storm conditions and attempts to breach the opening.

Design Pressure for Your Wind Zone
We match the design pressure of each shaped window to its actual wind zone, up to +/-100 and never higher. A window built for a stronger zone than you need costs more for no benefit. One built for a weaker zone fails. We get it right.

Energy Performance Options
Low-E insulated glass is available on qualifying shaped configurations. It’s worth considering for west-facing openings in Miami where afternoon sun drives cooling loads. Tinted glass also helps with glare and solar gain on larger triangular or curved units.

Color & Glass Options

Five finish colors cover most of the architecture in the Miami area. White and almond suit the stucco, barrel-tile, and Mediterranean-style homes in neighborhoods like Coral Way and Shenandoah. Bronze and black give a sharper, more contemporary line to the modern builds in Edgewater or the renovated mid-century homes around Miami Shores. Tan bridges the gap when the home has natural stone or warm beige tones and a standard white frame would look too stark.

On the glass side, laminated impact glass is the default for any shaped window that must meet HVHZ. Clear keeps the view clean. Tinted glass cuts glare, which matters on fixed triangular units that catch direct sun. Low-E insulated glass is the pick when the shaped window is large enough that heat gain becomes a real cooling cost. We’ll walk through trade-offs on your quote rather than defaulting to the most expensive stack.

Installation by Winslow Windows & Doors in Miami

Installation is where shaped windows succeed or fail, and it’s the reason we install everything we sell with our own crews. An NOA-rated window installed out of square or with a poor perimeter seal won’t perform. The rating only holds if the install does.

Our process starts with a pre-install inspection of the rough opening. Shaped openings are rarely built exactly to plan, so we measure, check for square, and address any substrate issues before the window goes in. Then we set the unit level, plumb, and square, following AAMA 2400/2410 practice. We seal the perimeter with AAMA 812 low-expansion foam, which fills the gap without bowing the frame. After trim and finish work, we run a final water test and walk you through operation and maintenance.

In Miami-Dade, permitting for window replacement requires HVHZ-compliant product submittals. We prepare the documentation for your specific shaped window configuration and coordinate with your permit expediter or contractor. If you’re in a coastal exposure zone, we’ll note the wind load requirements on your elevation and confirm the design pressure on the quote before fabrication starts.

The way we see it, a shaped window is a detail that should last the life of the house. Proper installation is what gets it there.

Frequently Asked Questions — Geometric & Shaped Windows

What wind zone / design pressure is the Geometric & Shaped Window rated for?
Design pressure is matched to your specific wind zone, up to +/-100 and never higher. We don’t over-rate windows for zones they won’t face, and we won’t under-rate one either. Your quote will state the design pressure for your elevation and exposure in Miami or wherever your project sits in Miami-Dade County. Call (844) 901-4551 and we’ll work up the numbers for your opening.

What is the lead time on a shaped window?
Because shaped windows are custom-fabricated per opening, lead times run longer than stock rectangular units. Expect several weeks from approved drawing to delivery, depending on configuration and finish. We confirm a production schedule when you approve the quote so you can plan the rest of the project around it. Call (844) 901-4551 for a current estimate on your specific shape and finish.

Does a shaped window require a Miami-Dade NOA or Florida Product Approval submittal for my permit?
Yes. In Miami-Dade County, any HVHZ-compliant window replacement requires product documentation with your permit application. Shaped windows are no exception. We provide the NOA and Florida Product Approval numbers applicable to your specific configuration, and you or your permit expediter submit them. Call (844) 901-4551 and we’ll explain what your municipality needs.

Can I customize the size or configuration?
Everything about a shaped window is custom. The shape, the dimensions, the frame material, the glass, and the finish are all specified per opening. If you have a builder’s drawing or an existing rough opening, we fabricate to it. If you’re still designing, we can fabricate from architectural drawings. Call (844) 901-4551 and we’ll look at what you’re working with.

How do I maintain the frame?
Wash the frame and glass with mild soap and water a few times a year. In coastal Miami air, salt residue builds up faster than inland, so homes near Biscayne Bay or the ocean benefit from more frequent rinsing. Check the perimeter seal annually and keep weep paths clear. Call (844) 901-4551 if you see condensation between panes or any seal separation.

Get a Quote — Geometric & Shaped Windows in Miami

A shaped window is a custom project, and it starts with your opening. Send us photos, drawings, or rough measurements, and we’ll prepare a fixed, line-item quote with the spec and documentation your permit requires. On-site measurement is free. Call (844) 901-4551 to start a project or schedule your free on-site measurement.

Written by the team at Winslow Windows & Doors, serving Miami, FL.