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
AfterTrusted Custom & Geometric Windows for Three Lakes Homeowners
Custom and geometric windows in Three Lakes, FL typically cost $1,200-$4,800 per opening depending on shape complexity, impact rating, and glazing specification. Sightline Windows & Doors Three Lakes installs arched, circular, triangular, and oversized custom windows across Miami-Dade County - including Coral Gables Custom & Geometric Windows - with written pricing before any work begins. Call (786) 808-5792 to schedule your measured survey.
Three Lakes homeowners know the challenge. You have a gable end that needs a half-circle transom, a stairwell landing that wants a pentagon, or a great room where a standard rectangle will not do. The subdivision was built between 1995 and 2005, and the original windows are failing at the seals. You have read the three-star reviews. You want the price in writing before anyone touches your drywall. We have installed 18,000+ windows and doors since 2012, every one with a written price before work started and a documented photo record when finished. Our technicians are background-checked, uniformed, and identified by license number before arrival. Live phone coverage is available 24/7 at (786) 808-5792.
What Our Custom & Geometric Windows Service Includes
Custom Impact Windows
Custom impact windows are non-rectangular openings fitted with laminated glass and reinforced frames that meet Miami-Dade’s HVHZ code for wind-borne debris. You need these when your home’s architecture includes shaped openings in the wind zone, or when you are replacing a standard impact unit with a custom profile that still must pass inspection. At Sightline Windows & Doors Three Lakes, we measure the rough opening to the sixteenth, specify the glass package by design pressure rating, and source from manufacturers who certify their custom shapes for Florida Product Approval. The measured survey you keep becomes the written quote. The quote becomes the invoice.
Geometric & Shaped Windows
Geometric and shaped windows include triangles, trapezoids, octagons, and other non-standard profiles that require templating rather than standard extrusion. You need these when you are matching existing architecture, replacing a failed shaped unit, or adding natural light to a vaulted ceiling without installing a standard window that breaks the sightline. We template on-site with digital measuring tools, transmit the file directly to the manufacturer, and verify the sightline - the visible glass area once the frame is installed - before you approve the order. Our documented photo record shows the template, the dry-fit, and the final installation.
Arched & Curved Windows
Arched and curved windows incorporate a radius top, full circle, or eyebrow arch that demands either a true curved frame or a segmented approximation depending on budget and performance requirements. You need these when replacing a failed radius unit in a Mediterranean or Spanish Colonial home common in Three Lakes and nearby Palmetto Estates, or when adding an architectural feature that standard rectangles cannot achieve. We distinguish between fixed arched transoms and operable radius windows, specify the correct flashing integration for Miami-Dade’s driving rain exposure, and document the arch rise and chord width in your written scope.
Oversized Openings
Oversized openings exceed standard manufacturer dimensions and require either a custom-built unit or a properly mulled combination of standard frames with structural support. You need these for two-story great rooms, picture windows capturing the canal views common in Three Lakes, or replacement of failed curtain wall sections in contemporary homes. We engineer the header support, specify the U-factor and SHGC (solar heat gain coefficient) for the southern exposure, and source from lines including ES Windows and ECO Window Systems that produce true oversized units rather than field-mulled approximations. The written price includes the structural review.
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.
Brands We Service for Custom & Geometric Windows
We specify custom and geometric windows from manufacturer lines chosen by what the opening requires, not by what is in stock. CWS produces custom impact-rated geometric shapes with Florida Product Approval for Miami-Dade’s HVHZ requirements; we have templated and installed dozens of CWS trapezoids and radius tops in Three Lakes homes built during the 2003-2007 construction wave. ES Windows manufactures oversized custom impact units with narrow sightlines for contemporary homes; we specify their line when the opening exceeds 72 inches in either dimension and the customer wants minimal frame intrusion. ECO Window Systems offers a mid-range custom geometric line with strong thermal performance; we match this to homes in The Crossings and Richmond West where energy efficiency is the primary driver and the shape is secondary.
Mr-Glass specializes in high-performance laminated glazing for custom applications where standard impact glass produces visual distortion at size. We have specified Mr-Glass for oversized circular openings in Pinecrest, Palmetto Bay, and Homestead Custom & Geometric Windows where the homeowner rejected the waviness common in lesser laminates. Whether you have CWS, ES Windows, ECO Window Systems, Mr-Glass, or any other make, we can template, specify, and install. We do not require that you purchased from us originally. Bring us your existing window details or a competitor’s written estimate and we will review it at no charge under our Free Second Opinion policy.
Before
AfterSigns You Need Custom & Geometric Windows Right Now
- Visible seal failure in a shaped unit. Fogging between panes in an arched or geometric window cannot be repaired with standard sash replacement; the entire insulated glass unit must be fabricated to the custom shape. Delay risks water intrusion into the surrounding framing, especially during Three Lakes’ summer thunderstorms when wind-driven rain finds every gap.
- Cracked or delaminated impact glass. A spiderweb pattern in the laminated layer means the impact rating is compromised. In Miami-Dade County, this is not merely an aesthetic issue; your window no longer meets the code requirement for wind-borne debris protection that your insurance and occupancy depend upon.
- Frame rot or corrosion at the radius joint. Arched windows concentrate water at the bottom of the curve where the frame meets the sill. In Three Lakes’ subtropical climate with 60+ inches of annual rainfall, aluminum frames pit and vinyl frames degrade at this exact point. We document the condition with photos before quoting replacement.
- Operating hardware failure in a custom operable unit. Crank mechanisms, hinges, and locks for geometric shapes are not interchangeable with standard rectangular hardware. A casement triangle requires a specific hinge geometry and operator arm length. We source OEM hardware by manufacturer line or specify full replacement when the part is obsolete.
- Energy penalty from single-pane or non-low-E custom glass. Older custom windows in Three Lakes often were built with clear glass before current energy codes. You are cooling against solar gain that modern low-E coatings with argon fill would reject. We measure the existing U-factor and SHGC, then specify replacement glass packages that meet or exceed current Florida energy code.
Our Custom & Geometric Windows Process - Step by Step
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Measured survey and documentation. Our technician arrives in uniform, presents license number, and photographs the existing opening from interior and exterior. We measure width, height, depth, arch rise, chord length, and wall thickness to the sixteenth of an inch. You receive a copy of this survey before we leave. This is Haven Clause 1: Have it in writing.
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Performance specification and brand selection. We determine whether the opening requires impact rating, the design pressure rating for the exposure, and the optimal U-factor and SHGC for the orientation. We then specify from our eight manufacturer lines - PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux - by performance tier and price range, not by margin.
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Written quote with fixed pricing. The quote references the measured survey by job number and lists every line item: window unit, glazing upgrade, flashing, trim, disposal, and permit. The price cannot differ from the survey document. Haven Clause 5: No surprises. You approve in writing or request revision.
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Template transmission and manufacturing. For geometric and custom shapes, we create a digital template or physical mockup transmitted directly to the manufacturer. We verify sightline dimensions and confirm Florida Product Approval numbers for impact-rated units. Manufacturing lead time varies by complexity; we communicate this in the written scope.
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Installation with photo record and final documentation. Our crew arrives on the scheduled date, installs per the written scope, and photographs each phase: existing removal, rough opening condition, flashing detail, unit set, and finished interior and exterior. You receive the documented photo record. The 365-Day Done Right Promise is activated. Haven Clause 4: Evidence on every job.
How Much Does Custom & Geometric Windows Cost in Three Lakes?
A typical custom geometric window in Three Lakes runs $1,200-$4,800 per opening installed, with most homeowners in the $1,800-$2,800 range for standard shapes with impact rating. Arched and curved windows fall between $1,600-$3,200 depending on whether the radius is true or segmented. Oversized openings exceeding standard dimensions run $2,800-$4,800 due to structural engineering, crane or specialized handling, and custom glass fabrication. Custom impact windows with high design pressure ratings for canal-front or exposed locations add 15-25 percent for the laminated glass and reinforced frame package.
Several factors move the price within these ranges. The shape complexity determines whether standard extrusions can be adapted or full custom fabrication is required. Impact rating versus non-impact affects glass and frame cost significantly in Miami-Dade County. Glazing upgrades - triple-pane, low-E coatings, argon fill, or decorative glass - add incrementally. Interior and exterior trim replacement, stucco or drywall repair, and permit fees are line-itemed separately so you see exactly what you are paying for.
To avoid overpaying, obtain a written line-item quote that references a measured survey, not a phone estimate based on rough dimensions. Be wary of quotes that do not specify the manufacturer line, the Florida Product Approval number for impact units, or the exact glazing package. At Sightline Windows & Doors Three Lakes, our free estimate includes all of this documentation. There is no charge for the measured survey, and our Free Second Opinion policy means we will review any competitor’s written estimate at no cost.
Custom & Geometric Windows Near Three Lakes - Our Service Area
We install custom and geometric windows throughout Three Lakes and surrounding communities including The Crossings, Palmetto Estates, Richmond West, Kendall, South Miami Heights, Palmetto Bay, Pinecrest, Cutler Bay, Olympia Heights, Princeton, and Coral Gables. Response time to Three Lakes properties is typically same-week for measured surveys, with installation scheduling based on manufacturing lead time for custom shapes. We have templated arched units in the Mediterranean-style homes of Coral Gables, oversized openings in Pinecrest’s contemporary builds, and geometric replacements in the 1990s-era subdivisions of Kendall where original shaped windows are now failing. Every visit produces the documented photo record and written scope that Haven Standard installations require.
Serving Three Lakes, FL - Our Local Coverage Area
We’re based in the Three Lakes area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
Frequently Asked Questions - Custom & Geometric Windows in Three Lakes
Custom and geometric windows are non-rectangular window units manufactured to specific shapes, sizes, and performance requirements rather than pulled from standard inventory. They include triangles, trapezoids, arches, circles, octagons, and oversized rectangles that exceed manufacturer stock dimensions. At Sightline Windows & Doors Three Lakes, we template, specify, and install these units from eight verified manufacturer lines with written pricing before any work begins. Call (786) 808-5792 for a free measured survey.
The measured survey and templating visit takes 60-90 minutes; manufacturing lead time for custom shapes typically ranges 4-8 weeks depending on complexity and the manufacturer line specified. Installation of a single custom unit takes 2-4 hours; multiple units or oversized openings with structural modification may extend to a full day. We communicate manufacturing and installation timelines in the written scope before you approve. Call (786) 808-5792 to schedule your survey and receive a timeline specific to your opening.
Custom and geometric windows in Three Lakes typically cost $1,200-$4,800 per opening installed, with most projects falling in the $1,800-$2,800 range for standard custom shapes with impact rating. Arched units run $1,600-$3,200; oversized openings run $2,800-$4,800. The exact price depends on shape complexity, impact rating requirements, glazing package, and trim conditions. Call (786) 808-5792 for a free estimate with written line-item pricing - estimates are free, and we offer a Free Second Opinion on any competitor’s written quote.
Yes. We specify and install custom geometric units from CWS, ES Windows, ECO Window Systems, and Mr-Glass, and we service existing units from these and other manufacturer lines. We source OEM parts when available and specify full replacement when parts are obsolete or when the cost of repair approaches replacement. Bring us your existing window details or a competitor’s estimate and we will review at no charge. Call (786) 808-5792 to discuss your specific manufacturer line.
We answer calls live 24/7 at (786) 808-5792. For custom geometric windows, true emergency response is limited by the need for custom fabrication; we cannot manufacture a shaped unit on-site. We can, however, board and weather-seal damaged openings same-day to secure the home, then expedite templating and manufacturing. If your custom window is cracked, leaking, or structurally compromised, call (786) 808-5792 immediately and we will dispatch a technician to assess and secure.
Every installation is covered by our 365-Day Done Right Promise: if it is not done right, we make it right. This is written into the Haven Standard, not offered as a courtesy. Manufacturer warranties on the window unit itself vary by line - PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux each carry their own product warranties that we document in your written scope. The documented photo record supports any future warranty claim. Call (786) 808-5792 for warranty specifics by manufacturer line.
Clear interior access to the window opening and remove window treatments if possible; we need to measure the rough opening, not just the visible frame. Gather any existing documentation: original builder specifications, previous repair records, or competitor quotes. Note any symptoms you have observed: fogging, leaks, operation difficulty, or visible damage. We bring our own measuring tools, documentation equipment, and identification. The visit produces the measured survey you keep and the written quote that becomes the final invoice. Call (786) 808-5792 to schedule - estimates are free with no obligation.
Schedule Your Custom & Geometric Windows Service in Three Lakes Today
Call (786) 808-5792 to schedule your free measured survey. A background-checked, uniformed technician will arrive with license number in hand, document your opening, and leave you with a written price that will not change. Live phone coverage is available 24/7. The Haven Standard governs every installation we complete: Have it in writing, Arrive on schedule, Verified crews, Evidence on every job, No surprises.
Written by Sonia Raman, Owner at Sightline Windows & Doors, serving Three Lakes since 2012.