CGI Custom & Geometric Windows Nationwide | Sightline Windows & Doors Plantation

CGI Custom & Geometric Windows in Plantation: What to Know First

As an independent CGI service provider, we measure, specify, and install CGI custom and geometric windows across Plantation with a written price before any work starts and a documented photo record when the job is done. Most custom CGI orders in Broward County run 6-10 weeks from measured survey to installation, with arched and oversized units trending toward the longer end. A typical CGI geometric window replacement in Plantation ranges from $1,400 to $3,800 per opening depending on series, glazing package, and whether the original frame can be retained.

Call (754) 704-3597

This page is for Plantation homeowners who already own CGI windows or have selected CGI for a custom or geometric replacement - arched tops, circular units, trapezoids, or oversized combinations - and need an installer who works with the product line directly, not a generalist who orders from a catalog. If you’re comparing CGI against PGT or CWS for a shaped opening, we can review any written estimate at no charge. Call (754) 704-3597 to schedule your measured survey.

How CGI Products Fail - and How We Fix Them

• Sparta series fixed geometric units: seal failure in the curved top lite. The Sparta’s single-lite arched design puts constant thermal stress on the curved IG edge where it meets the rectangular base. In Plantation’s afternoon sun load, we’ve tracked seal breaches at year 8-12 that fog from the top down, not the bottom up. We specify OEM IG replacement with warm-edge spacer upgrade; aftermarket dual-seal units without the proper radius tolerance will fail again in 18 months.
• Sentinel impact-rated geometric windows: hinge fatigue on outswing casement shapes. The Sentinel’s heavier laminated glass in trapezoid and pentagon configurations loads the hinge side unevenly. We see sagging strike misalignment in Jacaranda and Plantation Acres homes where the original installer used standard-weight hardware. Our fix: OEM heavy-duty hinge kit with reinforced jamb prep, measured to the original CGI shop drawing so the sash stays true through its full swing arc.
• ImpactVue oversized custom combinations: interlock gasket compression set. CGI’s ImpactVue line allows large custom assemblies, but the bulb gasket between meeting rails takes a permanent set after 6-8 years of South Florida heat cycling. The symptom is wind noise at the mullion, not water intrusion - yet. We replace with OEM-spec EPDM interlock gasket, not generic bulb stock, and re-torque the mullion screws to CGI’s assembly spec so the compression is even across the full rail length.
• Escalade series radius windows: frame deflection in retrofits without proper buck framing. The Escalade’s narrow frame profile looks clean, but a curved top without adequate structural support behind the fin will rack under impact-test-level pressure. We’ve corrected three Plantation retrofits where the original contractor furred out the radius and left the frame floating. Our repair strips back to the rough opening, installs a curved buck per CGI’s field modification bulletin, and resets the unit on composite shims with structural sealant bedding.
• Custom color anodized geometric units: chalking and finish degradation on south and west elevations. CGI’s anodized finishes hold well on standard rectangles, but the extrusion stretch around tight radius corners thins the anodic coating microscopically. In Plantation’s UV exposure, chalking appears first at the crown of arched heads. We source factory-match touch-in repair kits for minor degradation; for extensive chalking, we specify replacement extrusions with Kynar 70% PVDF respray, which carries a 10-year chalk rating versus anodize’s 5-year fade threshold in this climate.

Before

After

Our CGI Custom & Geometric Windows Process

1. 1
   Measured survey with documented rough opening. We arrive with the laser, the level, and the camera. Sonia Raman or a verified crew member records width, height, diagonal, and plumb at three points each, plus the radius for any curved element. You keep a copy; this becomes the basis for the written quote.
2. 2
   Series identification and failure diagnosis. We locate the CGI serial stamp - usually on the hinge jamb or top rail - and cross-reference to the original order spec. For geometric units, we verify whether the original was a factory assembly or a field-mulled combination, which changes the repair path entirely.
3. 3
   Parts decision: OEM, factory-authorized, or documented equivalent. We default to OEM for IG units, hardware, and gaskets. Where OEM lead time exceeds your tolerance, we source from CGI’s authorized component suppliers and document the substitution in writing. No unapproved aftermarket parts on impact-rated units - that voids the structural warranty.
4. 4
   Installation or replacement per CGI assembly manual. For custom shapes, we reference the original shop drawing or request it from CGI’s technical services. Every mullion, every shim, every sealant bead is photographed before trim covers go on.
5. 5
   Operational test and documented handoff. We cycle the sash, check the weep drainage, verify the lock engagement, and shoot the final photo set. The 365-Day Done Right Promise is stamped on your invoice under Haven Clause 5: No surprises. If it’s not done right, we make it right.
6. 6
   Cleanup and written record delivery. You receive the measured survey, the scope-of-work invoice with line-item pricing, the photo record link, and the warranty document. The price on the invoice matches the price on the proposal - Haven Clause 1.

What CGI Custom & Geometric Windows Costs in Plantation

These are real ranges from recent CGI jobs we’ve written in Plantation, not placeholders. Your measured survey will produce a fixed dollar figure.

What moves the price: retaining the original frame versus full-frame replacement; impact-rated versus non-impact glazing; custom color or finish match; and whether the rough opening needs structural correction. We do not quote by phone for custom shapes - the radius, the jamb condition, and the frame squareness all affect the number. Call (754) 704-3597 for your free measured survey and written estimate.

Why Plantation Homeowners Call Sightline Windows & Doors Plantation for CGI Work

We’ve installed and serviced CGI products in Plantation since the line was primarily a commercial specification, before the residential Sparta and Escalade series expanded into Broward County. That history means our crew recognizes the older commercial-grade hardware and the newer residential extrusions without guessing.

The Haven Standard governs every opening: Have it in writing, Arrive on schedule, Verified crews, Evidence on every job, No surprises. Our technicians are background-checked, uniformed, and identified by license number before arrival - Haven Clause 3. Every job leaves a documented photo record, not as an upsell, as standard evidence.

We also specify PGT, CWS, ES Windows, and ECO Window Systems. If CGI’s lead time or price point doesn’t fit your project, we can cross-reference performance specs and present an alternative with the same written-price guarantee. No brand is pushed by margin; every line is specified by what the opening requires.

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