Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Before
After
Before
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Before
AfterCGI Custom & Geometric Windows in Miami Gardens: What to Know First
As an independent CGI service provider, we install and service custom and geometric CGI windows across Miami Gardens with written pricing delivered before any work begins. Most custom CGI orders survey to install in 4-6 weeks; geometric replacements where the frame is intact often finish in 2-3 weeks. We do not quote over the phone - Haven Clause 1 requires a measured survey you keep, and the written scope is the same document that governs the job.
This page is for Miami Gardens homeowners who already own CGI products or are specifying them for new openings: arched transoms above entry doors, circular gables in Andover and Lake Lucerne, oversized fixed glass in Bunche Park, or radius-topped casements matching original 1980s architecture near St. Thomas University. If the spec isn’t on the page, it isn’t part of the job. Call (754) 354-6649 to schedule your measured survey.
How CGI Products Fail - and How We Fix Them
- Escalade Series geometric sashes: seal failure in radius-topped units. The curved aluminum extrusion on Escalade half-round and quarter-round sashes creates a thermal bridge at the crown where the insulated glass unit seals experience accelerated fatigue. In Miami Gardens, the daily UV exposure plus afternoon rain cycling degrades the PIB primary seal faster than in square units. We measure the sightline gap with a feeler gauge, source the replacement IGU with warm-edge spacer specification, and document the argon fill rate with a handheld meter before installation.
- Sentinel impact-rated custom shapes: corner delamination at miter joints. Sentinel’s reinforced corners in geometric configurations carry extra laminate mass that can stress the corner keys in trapezoid and pentagon shapes after repeated positive/negative pressure cycles. We see this in gable-end installations near the Turnpike corridor where wind exposure is highest. Our fix: disassemble the affected corner, inspect the key for creep deformation, and replace with OEM corner key and structural silicone - never generic caulk - then pressure-test to ASTM E330.
- Sparta fixed geometric units: water intrusion at sill pan integration. Sparta’s sloped sill design in custom widths (common in Miami Gardens patio enclosures) depends on precise sill pan fabrication; when the original installer field-cut the pan rather than ordering the factory radius piece, water tracks behind the subsill. We remove the unit, fabricate a new pan from the shop drawing dimensions, and integrate with the drainage plane per CGI’s AAMA 711-13 detail - documented with photos at each layer.
- Impact-rated custom circles and ovals: laminated glass spider cracking from frame racking. Circular CGI units lack the diagonal bracing of rectangular frames; if the rough opening wasn’t plumbed to within 1/8 inch, seasonal expansion racks the frame and the laminated lite cracks in a characteristic star pattern. We don’t reglaze over a racked frame. We pull the unit, sister the rough opening if needed, reinstall with composite shims at 8-inch centers, and verify plumb with a digital level - the same one Sonia Raman has used since her building construction technology training at Miami Dade College.
- Escalade oversized fixed glass: coating degradation in south-facing elevations. Custom oversized Escalade units above 60 by 96 inches with low-E coatings on surface #2 show accelerated hazing in Miami Gardens when the interior shade remains down during peak solar hours - the coating traps heat against the glass. We diagnose with a handheld emissivity meter, confirm the coating position from the edge deletion pattern, and specify replacement with surface #3 low-E placement or a heat-strengthened substrate depending on the exposure analysis.
Our CGI Custom & Geometric Windows Process
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Measured survey you keep. We arrive with a printed checklist specific to the CGI series, record every sightline dimension to the nearest 1/16 inch, note the existing glazing specification from the etched mark, and photograph the installation condition. You receive this document before we leave.
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Written scope and price. The survey becomes the quote - same measurements, same spec, same line-item price. No allowance items, no “pending field conditions.” Haven Clause 1.
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Parts decision: OEM or verified equivalent. For geometric shapes, we default to CGI factory glass and extrusion where lead time permits. When a Miami Gardens homeowner needs faster turnaround and the application permits, we source from ES Windows or ECO Window Systems with matched performance certificates - never unverified aftermarket.
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Installation with evidence. Background-checked, uniformed technicians arrive with license numbers visible. We install per CGI’s published details, photograph each critical step, and record the final sightline measurement.
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Testing and sign-off. Operable units get full cycle testing; fixed units get smoke-pencil air infiltration verification at the perimeter. You sign the completion checklist.
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365-Day Done Right Promise activates. The photo record, the signed checklist, and your copy of the warranty are uploaded to your file. If it’s not done right, we make it right - written into the Haven Standard, not a verbal assurance.
Before
AfterWhat CGI Custom & Geometric Windows Costs in Miami Gardens
| Scenario | Typical Range | What Moves the Price |
|---|---|---|
| Geometric IGU replacement (half-round, quarter-round) | $680 - $1,400 | Radius size, low-E coating position, argon fill |
| Custom arched sash replacement (Escalade/Sentinel) | $1,200 - $2,400 | Impact rating, laminate thickness, hardware finish |
| Oversized fixed glass (Sparta, above 60″ × 96″) | $2,800 - $5,500 | Crane or boom access, heat-strengthened vs. annealed |
| Full custom geometric unit with frame | $3,500 - $7,200 | Shape complexity, factory lead time, Miami-Dade NOA requirement |
| Site-measured survey and written estimate | Free | Always included, never a promotion |
Price drivers specific to Miami Gardens: wind-exposure ratings above 140 mph for homes near the Palmetto Expressway corridor; Miami-Dade Notice of Acceptance documentation for impact-rated custom shapes; and access constraints in gated communities like Andover where equipment staging requires coordination. Call (754) 354-6649 for your exact quote - estimates are free, and we offer a free second opinion on any written estimate you’ve already received.
Why Miami Gardens Homeowners Call Sightline Windows & Doors Miami Gardens for CGI Work
We’ve installed and serviced 18,000+ openings since 2012, and the geometric and custom CGI jobs are the ones where measurement discipline matters most - a quarter-inch gap in a rough opening for a radius-topped unit becomes a quarter-inch leak path that no caulk closes. Our technicians carry the full CGI specification binder plus cross-reference sheets for PGT, CWS, ES Windows, and ECO Window Systems, so when a CGI lead time stretches past a homeowner’s need, we specify the equivalent performance from another verified line rather than leave the opening boarded.
The Haven Standard governs every engagement: Have it in writing, Arrive on schedule, Verified crews, Evidence on every job, No surprises. Calls are answered by a live person, 24/7 - not a voicemail queue. Sonia Raman and her crew have worked steadily across Miami Gardens, including jobs near St. Thomas University where wind-exposure ratings and insurance documentation come up in almost every conversation. We quote exact U-factor and SHGC values on every estimate, not brand names.
FAQs
No - CGI’s product warranty covers manufacturing defects regardless of who installs or services the unit, provided the work follows published specifications and uses OEM or approved components. We document both. Call (754) 354-6649 if you’d like us to review your warranty documents before we begin.
Factory lead time is typically 4-6 weeks for custom extrusions and shaped glass; standard geometric sashes in common radii sometimes ship in 2-3 weeks. We do not quote delivery dates we cannot verify with the factory. Call (754) 354-6649 to check current lead times for your specific shape.
Yes - we record the frame finish code, hardware series, and sightline dimension from your existing installation and spec the new unit from CGI’s current catalog. Where a series has been discontinued, we cross-reference to the replacement profile and document the match for your approval before ordering. Call (754) 354-6649 to schedule a match survey.
Replace if the frame is racked, the sill pan is improperly integrated, or the IGU seal has failed - repairs to these conditions are temporary and typically cost 60-70% of replacement without solving the root cause. Repair is viable for isolated hardware failure or weatherstripping degradation in otherwise square, dry frames. We diagnose and document both paths with photos; you choose. Call (754) 354-6649 for an exact assessment.
Yes - Miami-Dade requires permits for all impact-rated window replacements and any new opening modification. We pull the permit, schedule inspection, and pass it. The permit number appears on your final documentation. Call (754) 354-6649 to confirm permit requirements for your specific project.
Written by Sonia Raman, Owner, Sightline Windows & Doors Miami Gardens at Sightline Windows & Doors Miami Gardens, serving Miami Gardens and nearby areas.