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
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Before
AfterES Windows Custom & Geometric Windows in Three Lakes: What to Know First
We provide independent ES Windows service for custom and geometric windows in Three Lakes, with most measured surveys scheduled within 48 hours and installations following 2-4 weeks after approval depending on glass fabrication. A typical custom ES Windows geometric unit runs $1,800-$4,500 installed, and we put that range in writing before any work starts - Haven Clause 1 means the measured survey and the quote are the same document. This page is for ES Windows owners in Three Lakes dealing with arched tops, trapezoids, oversized openings, or shaped units that no longer seal, operate, or pass inspection. Call (786) 808-5792 to schedule your free measured survey.
How ES Windows Products Fail - and How We Fix Them
- ES-5000 series fixed geometric units: The thermal-break aluminum frame separates at the mitered corners of trapezoid and pentagon configurations after 6-10 years in Three Lakes sun. The corner keys oxidize faster than on rectangular units because the angled cuts expose more raw aluminum to the joint. We disassemble the frame, replace the corner keys with marine-grade aluminum versions, and reseal with Dow 795 silicone rather than the factory butyl - it holds through Killian Corridor humidity cycles.
- ES-8000 impact-rated arched windows: The laminated glass delaminates at the springline (where the arch begins its curve) because the heat-soak process doesn’t account for the asymmetric stress distribution in curved laminates. We see this on south-facing elevations in Three Lakes where afternoon temperatures spike. Our fix: specify a full heat-strengthened lite with SentryGlas interlayer rather than PVB, which we order through our ES Windows distributor with the original NFRC certification intact.
- ES-2000 series oversized fixed units: The glazing tape compresses permanently under the weight of large rectangular lites, creating a visible gap at the sill and water intrusion during Miami’s summer storms. These units often exceed 60″ x 96″ and the original glazing tape was specified for standard sizes. We reglaze with structural silicone bedding and add setting blocks at quarter-points rather than third-points - the load distribution matches the actual deflection curve of the oversized lite.
- ES-5000 geometric operable units (quarter-circles, eyebrows): The sash warps along the curved rail because the extrusion wall thickness is uniform and doesn’t account for the greater thermal expansion on the outer radius. The sash drags, then the keeper misaligns. We true the sash rail on a custom jig, replace the weatherstrip with compression-fit bulb seal rather than fin seal, and reset the hardware to the corrected closure position.
- ES-8000 custom combination units (rectangle over arch):strong> The interior drywall bead cracks at the mullion between the rectangular and arched sections because the two frames expand at different rates - the arch has more surface area relative to its volume. We see this on Three Lakes homes built 2015-2019. Our repair includes installing a slip-joint mullion cover that accommodates 3/16″ differential movement, then refinishing the interior trim to match.
Our ES Windows Custom & Geometric Windows Process
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Measured survey: Sonia Raman or a verified crew member arrives with a printed license number, measures the rough opening to 1/16″, records frame plumb and square readings, and photographs existing conditions. The customer keeps this document.
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Diagnosis and specification: We determine whether the failure is frame, glass, glazing, or hardware, then specify the exact ES Windows series or compatible aftermarket solution. For geometric units, we verify the original template or create a new one from field measurements.
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Written quote: The price is calculated from the measured survey - no separate “final invoice” that differs from the estimate. Haven Clause 1. The quote lists line-item costs for materials, labor, and any crane or scaffold required for oversized Three Lakes installations.
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Fabrication and scheduling: Custom ES Windows geometric units typically require 2-4 weeks for glass fabrication and frame assembly. We coordinate delivery to avoid storage damage in humid conditions.
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Installation and testing: The crew installs per ES Windows published guidelines, verifies operation, checks seal continuity with a smoke pencil, and photographs every stage for the documented photo record.
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Final documentation: The customer receives the completed photo record, the 365-Day Done Right Promise under the Haven Standard, and a copy of the final scope showing zero deviation from the original quote.
Before
AfterWhat ES Windows Custom & Geometric Windows Costs in Three Lakes
| Scenario | Typical Range |
|---|---|
| ES-5000 trapezoid or pentagon replacement, standard size | $1,800 - $2,800 |
| ES-8000 impact-rated arched unit, up to 48″ wide | $2,400 - $3,600 |
| ES-2000 oversized fixed unit, reglaze and reseal | $1,200 - $2,200 |
| ES-5000 geometric operable, sash true and hardware reset | $900 - $1,500 |
| ES-8000 combination unit, mullion modification and trim | $2,800 - $4,500 |
Price movers: impact-rated versus non-impact glass, crane rental for second-story oversized units in Three Lakes, interior trim complexity on geometric shapes, and whether the original template still exists. We do not quote until we measure. Call (786) 808-5792 for your free measured survey - the written price follows the same document.
Why Three Lakes Homeowners Call Sightline Windows & Doors Three Lakes for ES Windows Work
We’ve installed and serviced 18,000+ openings since 2012 under the Haven Standard, and a measurable portion of those have been ES Windows geometric and custom units in the Three Lakes area - particularly homes backing the Killian Corridor where the glazing specification matters for both impact code and FPL bill. Our technicians carry license numbers, not business cards. The 365-Day Done Right Promise is stamped on every job, not offered as a courtesy. And because we specify across eight manufacturer lines - PGT, CGI, CWS, ECO Window Systems, and others - we can recommend an ES Windows solution when it’s the right fit, or an alternative when the opening demands it. Measure once, quote it straight, install it right - nothing else belongs on the invoice.
FAQs
No - if the repair uses OEM-specified parts and procedures. As an independent ES Windows service provider, we source factory-equivalent components and document the work to preserve any remaining warranty coverage. Using non-certified hardware or untrained labor can void protection, which is why we specify parts by ES Windows part number and install to published tolerances. Call (786) 808-5792 to review your warranty status.
Typically 2-4 weeks from template approval, compared to 1-2 weeks for standard rectangles. The glass cutting, edge work, and heat treatment for shaped lites require specialized equipment that fewer plants maintain. We coordinate directly with the fabricator to avoid the 6-8 week delays common when installers treat custom work as standard orders.
Yes, within the ES Windows standard color range - white, bronze, and silver are consistently available, with custom color matching to a physical sample when needed. We keep a color chip library from previous Three Lakes jobs and can verify match before ordering. Custom anodize or Kynar finishes add 2-3 weeks and $400-$800 per unit.
Repair when the frame is sound and the failure is isolated to glass, glazing, or hardware - typically 40-60% of replacement cost. Replace when the frame has structural damage, the unit has failed before, or the energy performance no longer meets current code. We document both options in writing with 10-year cost projections. Call (786) 808-5792 for the measured survey that determines which path applies.
Yes, for all impact-rated and oversized replacements - Miami-Dade County requires permits for any window replacement where the opening is modified or the product is rated for hurricane protection. We pull the permit, schedule inspection, and pass it. The permit number appears on your final documentation. Non-impact repairs that don’t alter the rough opening typically don’t require permitting, and we’ll state that clearly in the quote if applicable.
Written by Sonia Raman, Owner, Sightline Windows & Doors Three Lakes at Sightline Windows & Doors Three Lakes, serving Three Lakes and nearby areas.