Custom & Geometric Windows in Tamiami - Written Price Before Anything Is Ordered

Trusted Custom & Geometric Windows for Tamiami Homeowners

Custom and geometric windows in Tamiami typically cost $1,800 to $6,500 per opening depending on shape complexity, impact rating, and glazing specification, with measured surveys scheduled within 48 hours and most installations completed in one day. For homeowners in nearby areas, we also offer our Custom & Geometric Windows in Hialeah with the same service standards. Sightline Windows & Doors has installed 18,000+ openings across South Florida since 2012, every one with a written price before work started and a documented photo record when finished. Call (786) 321-9118 to schedule your measured survey.

Call (786) 321-9118

Tamiami’s architectural mix tells its own story. The ranch homes built along Coral Way in the 1960s and 1970s carry original aluminum single-hungs with fixed geometric accents above the entryway. The infill construction near Miller Drive and the newer builds in Three Lakes favor 10-foot ceilings and oversized rectangular openings that standard window catalogs don’t properly address. Then there are the Mediterranean revivals scattered through Olympia Heights and Glenvar Heights, where arched windows are not decorative afterthoughts but structural elements that define the facade.

We’ve replaced geometric units in Tamiami where the original builder installed a half-circle fixed window above a double-hung without proper flashing integration. Water had been migrating behind the stucco for eleven years. Our measured survey caught the rot pattern before we quoted, and the written scope included reframing the rough opening, not just swapping the sash. That’s the difference between a window order and a window installation. Under the Haven Standard, the measurement document and the quote are the same paper. No change orders, no surprises.

Sonia Raman has directed Sightline’s operations since the company’s founding, and every custom or geometric opening we touch in Tamiami carries her specification: the right manufacturer for the opening’s performance requirement, not the product with the best margin that month.

What Our Custom & Geometric Windows Service Includes

Custom Impact Windows

Custom impact windows are manufactured to specific dimensional and shape requirements while maintaining Miami-Dade County’s HVHZ (High Velocity Hurricane Zone) certification. Standard impact windows come in rectangles; custom impact units can be trapezoids, triangles, or compound curves that still pass the TAS 201, 202, and 203 test protocols. In Tamiami, we specify custom impact windows when a homeowner is replacing a non-impact geometric unit but cannot alter the rough opening due to structural constraints or HOA architectural review board requirements.

We draw from PGT and CGI for custom impact lines, with ECO Window Systems for mid-tier projects where the opening size exceeds PGT’s standard catalog limits. Our measured survey documents the existing frame’s structural condition, the wall thickness (critical for proper jamb depth), and the sightline dimensions that determine whether the replacement will match or improve the glass-to-frame ratio. Every custom impact order includes a shop drawing signed by the customer before fabrication begins. Haven Clause 1: Have it in writing.

Geometric & Shaped Windows

Geometric and shaped windows are fixed or venting units manufactured to angles and curves outside standard 90-degree construction. Octagons, hexagons, elongated triangles, and eyebrow arches fall in this category. These are not retrofit adaptations of rectangular frames; they require dedicated extrusion dies or thermally broken aluminum bending equipment.

In Tamiami, we see geometric windows most often in gable-end installations, stairwell landings, and as accent elements flanking entry doors in Coral Way corridor homes. The critical factor is the template accuracy. We take a physical template or a digital scan of the existing opening, then verify against the manufacturer’s die library. Mr-Glass carries one of the deeper geometric catalogs for South Florida, and we have standing template agreements with their engineering team for compound shapes. If your existing geometric window has leaked or the insulated glass unit has fogged, we measure the visible glass dimensions to the sixteenth, not the nearest inch, because geometric replacement units have no adjustment tolerance.

Arched & Curved Windows

Arched and curved windows incorporate a radius in either the head, the sill, or both. True radius windows require the frame to be rolled or extruded to a specific dimension; segmented arches use flat lites joined at angles to approximate a curve. The distinction matters for price, energy performance, and sightline quality.

Tamiami’s Mediterranean and Spanish Colonial revivals often have true radius arches with 24-inch to 48-inch springline heights. We’ve replaced these with ViewLux thermally broken aluminum radius units where the original steel frame had corroded at the weld points. The process requires a radius template taken on-site, then verified by the manufacturer’s engineering department before release to production. Lead time for true radius units runs 8 to 12 weeks versus 4 to 6 for standard rectangles, and our written quote specifies the template approval deadline so you know exactly when the clock starts.

Oversized Openings

Oversized openings exceed the standard maximums for off-the-shelf window units, typically wider than 60 inches or taller than 96 inches in a single frame. These require reinforced sashes, heavier hardware, and often crane or boom-lift delivery for installation.

The newer construction in Doral and The Crossings has normalized 10-foot sliding walls and picture windows that start at 8 feet wide. In Tamiami proper, we more often encounter oversized openings in renovated 1950s ranch homes where two or three original windows have been combined into a single aperture for natural light. The structural header requirements change when you remove intermediate framing, and our measured survey includes a load-path assessment. We specify Therma-Tru for oversized door-adjacent openings where the window integrates with a patio door system, and CWS for standalone picture windows where thermal performance is the priority. The written scope includes the crane or lift rental, the permit, and the inspection sequence. No line item is buried.

Brands We Service for Custom & Geometric Windows

We maintain active specification and installation relationships with eight manufacturer lines, each chosen for specific performance characteristics rather than inventory convenience. For custom and geometric work in Tamiami, we most often draw from ECO Window Systems, Mr-Glass, and ViewLux.

ECO Window Systems produces a deep custom line with HVHZ certification on shapes up to 60 inches in any dimension, including trapezoids and pentagons. We’ve specified ECO for Tamiami installations where the homeowner needed impact-rated geometric units on a mid-tier budget and could accept a 6 to 8 week fabrication cycle. Their thermal break performance is verified with a U-factor of 0.30 or better on standard configurations.

Mr-Glass specializes in architectural glass and custom shapes, with particular strength in oversized lites and low-profile sightline frames. We use Mr-Glass for geometric accent windows where the design intent is maximum glass area and minimal visible frame. Their engineering team accepts digital templates directly from our field measurements, which reduces template error and shortens lead time by approximately 10 days.

ViewLux covers the premium tier for radius and true-arch units, with thermal performance specifications that meet or exceed Energy Star requirements for South Florida climate zones. We’ve installed ViewLux radius windows in Pinecrest and South Miami renovations where the architectural review committee required historically accurate proportions with modern energy performance, and we bring the same precision to Coral Gables Custom & Geometric Windows projects.

Whether you have ECO Window Systems, Mr-Glass, ViewLux, or any other make currently installed, we can assess, specify, and replace. Our measured survey identifies the existing manufacturer and series when possible, and we cross-reference against our specification library to ensure the replacement meets or exceeds the original performance values.

Before

After

Signs You Need Custom & Geometric Windows Right Now

• Fogging or condensation between glass panes. This indicates seal failure in the insulated glass unit (IGU). In geometric and shaped windows, IGU replacement is often not economically viable because the lite shape requires custom fabrication anyway. The moisture you see today becomes mineral staining tomorrow, and the reduced visibility is permanent.
• Water intrusion at the frame-wall interface during heavy rain. Tamiami’s wet season delivers 5 to 7 inches monthly from June through September. Geometric windows with improper flashing integration, common in 1980s and 1990s installations, channel water behind stucco rather than out to the exterior. The damage extends beyond the window to the framing and interior finishes.
• Visible frame corrosion or vinyl degradation. Coastal salt exposure accelerates aluminum oxidation, and South Florida UV exposure brittles vinyl in 15 to 20 years. Geometric frames are harder to source as replacement parts than rectangles, so frame degradation often necessitates full unit replacement.
• Draftiness or temperature stratification near the window. Older geometric units were often single-pane or early-generation dual-pane without low-E coating. The U-factor of a 1990s aluminum geometric window can exceed 1.0, versus 0.30 or better for current specifications. You are paying to condition air that exits immediately.
• Difficulty operating venting geometric units. Trapezoid and arched venting windows use specialized hinge and lock hardware that wears unevenly due to the asymmetrical sash weight. If the hardware is no longer manufactured, the window becomes a fixed unit by default, eliminating ventilation in rooms that may lack alternative airflow.

Our Custom & Geometric Windows Process - Step by Step

1. 1
   Measured survey with documented photo record. Our technician arrives at your Tamiami property with a background check verification and license number provided in advance. We photograph the existing opening from interior and exterior, measure rough opening dimensions to the sixteenth, assess wall thickness and structural condition, and document any water damage or framing compromise. You keep a copy of the survey before we leave.
2. 2
   Written quote with shop drawing approval. Haven Clause 1 requires that the measurement and the quote be the same document. Your written scope specifies the manufacturer, series, glass package, hardware finish, and installation details including permit and inspection responsibility. For custom and geometric units, we include a shop drawing for your signature before releasing to fabrication. No work proceeds without your written approval of both price and specification.
3. 3
   Permit application and fabrication. We pull the permit for all custom and geometric window installations in Tamiami, including the structural review where oversized openings require header modification. Fabrication lead times range from 4 weeks for standard custom shapes to 12 weeks for true radius or compound curves. We communicate factory completion dates weekly during the cycle.
4. 4
   Installation with real-time documentation. Our crew arrives on the scheduled date, verified under Haven Clause 3, and installs per the written scope. We photograph each phase: existing removal, rough opening condition, flashing integration, frame installation, and final trim. These images are uploaded to your project record within 24 hours of completion.
5. 5
   Inspection, walkthrough, and 365-Day Done Right Promise activation. We coordinate the municipal inspection, then conduct a walkthrough with you using the original scope as the checklist. The 365-Day Done Right Promise is stamped on your completion documents, not offered verbally. If anything is not done right, we make it right. Evidence on every job, no surprises.

How Much Does Custom & Geometric Windows Cost in Tamiami?

Custom & Geometric Windows Near Tamiami - Our Service Area

We install and replace custom and geometric windows throughout Tamiami and the surrounding metro core, including Custom & Geometric Windows in University Park, Custom & Geometric Windows in Westchester, Olympia Heights, Doral, The Crossings, Glenvar Heights, Kendall, South Miami, Three Lakes, Miami Springs, and Pinecrest. Typical response time for a measured survey is 24 to 48 hours from your call, with installations scheduled once fabrication is complete. Whether your property is a 1960s ranch on Coral Way or a new build in Doral, we specify from the same manufacturer lines and apply the same Haven Standard documentation.

Frequently Asked Questions - Custom & Geometric Windows in Tamiami

Schedule Your Custom & Geometric Windows Service in Tamiami Today

Call (786) 321-9118 to schedule your free measured survey. Our phone is answered by a live person 24 hours a day. You’ll receive a written price before any work starts, a documented photo record when the job is done, and the 365-Day Done Right Promise on every installation. No obligation, no change orders, no surprises. Haven Clause 1: Have it in writing.

Written by Sonia Raman, Owner at Sightline Windows & Doors, serving Tamiami since 2012.