Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
CGI Custom & Geometric Windows in Hialeah Gardens: What to Know First
As an independent CGI service provider, we measure, order, and install CGI custom and geometric windows across Hialeah Gardens with written pricing locked before any work begins. Most custom CGI units - arched, round-top, trapezoid, and oversized geometric shapes - run 4 to 8 weeks from measured survey to installation, depending on glass specification and whether the opening requires impact-rated lamination. We do not quote over the phone; Haven Clause 1 requires the measurement and the written price to be the same document.
This page is for homeowners who already know they want CGI and need custom or geometric shapes that standard catalogs do not stock. If you’re comparing brands, we also specify PGT, CWS, ES Windows, and ECO Window Systems by what the opening requires, not by what is in stock. Call (786) 321-3812 to schedule your measured survey.
How CGI Products Fail - and How We Fix Them
- Sparta series fixed geometric units: seal failure at the mitered aluminum corners. The thermal break in Sparta’s narrow-profile frames leaves minimal material at the corner keys, and Hialeah Gardens’ afternoon heat cycling - especially on west-facing gables near Palm Springs North - accelerates the butyl migration that causes interior fogging. We re-glaze with OEM spacer and sealant rather than injecting desiccant, because injected repairs fail again within 18 months on geometric shapes where the glass cannot expand uniformly.
- Impact-rated custom shapes: laminated glass delamination at the sightline edge. CGI’s impact laminates use a .090 PVB interlayer that can separate when the geometric cut exposes the laminate edge to direct UV without proper edge deletion. We see this on radius-top units above 48 inches wide where the fabricator omitted the edge mask. Our fix is full glass replacement with verified edge-deleted laminate, not a topical seal.
- Sentinel series operable geometric windows: sash warpage binding the hinge track. Sentinel’s heavier wall thickness resists impact but creates thermal mass differentials on non-rectangular shapes; the longer diagonal on trapezoid sashes pulls the hinge side out of square. We shim the frame at rough opening rather than grind the sash, because grinding voids the structural warranty and the sash will re-warp next summer.
- Custom color anodizing: chalking and fade on south exposures. CGI’s standard anodize is 0.4 mil Class I, but Hialeah Gardens’ UV index averages 6.5+ year-round and degrades dark bronze anodize to gray within 7 years on unshaded elevations. We specify Kynar 500 fluoropolymer paint on replacement custom units for those exposures, and we document the original finish in the photo record so the match is verifiable, not guessed.
- Oversized fixed geometric units: structural silicone failure at the glazing bite. CGI allows up to 60 square feet on some fixed custom shapes, but the glazing pocket depth was not designed for the deflection load of a 5×12 unit in a Hialeah Gardens wind zone. We find the silicone bead shearing at the heel where the glass rocks in the pocket. Our repair removes the unit, adds setting blocks at quarter points per ASTM E1300, and re-glazes with Dow 983 structural silicone rated for the actual wind load, not the catalog default.
Our CGI Custom & Geometric Windows Process

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Measured survey. Sonia Raman or a verified crew member arrives with the measured survey form you keep. We record rough opening, plumb, level, square, and existing frame condition. On CGI retrofits, we note the series stamp in the frame pocket and photograph the glazing label for the parts record.
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Diagnostics and scope. We identify whether the failure is glass, frame, hardware, or installation, and whether OEM parts are available or a quality aftermarket solution meets the spec. We document this in writing.
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Written price. The quote you receive is the measured survey with line-item pricing attached. It does not change. Haven Clause 1.
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Fabrication and delivery. For custom CGI units, we verify the shop drawing against our field measurements before the factory cuts glass. We reject drawings with sightline mismatches; measure once, document it, then measure again.
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Installation and testing. The crew installs per CGI’s published installation instructions, not field improvisation. We operate every sash, check weatherstripping compression with a feeler gauge, and photograph the completed condition.
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Documentation and guarantee. You receive the photo record, the final scope document, and the 365-Day Done Right Promise stamped under the Haven Standard. If it’s not done right, we make it right.
Before
AfterWhat CGI Custom & Geometric Windows Costs in Hialeah Gardens
These are the ranges we have written on measured surveys for CGI custom and geometric work in Hialeah Gardens over the past 24 months. Your price is locked after survey, not estimated.
| Scenario | Typical Range |
|---|---|
| Standard geometric fixed unit, non-impact, up to 24 sq ft | $890 - $1,340 |
| Impact-rated custom shape, laminated glass, standard anodize | $1,650 - $2,400 |
| Oversized fixed geometric, 40-60 sq ft, impact-rated | $3,200 - $4,800 |
| Sparta series re-glaze, seal failure, standard size | $340 - $520 |
| Sentinel sash replacement, operable geometric, with hardware | $780 - $1,150 |
| Custom color match, Kynar 500 upgrade | +18% - 24% over standard anodize |
What moves the price: impact rating versus non-impact, glass size and thickness, finish specification, and whether the rough opening requires reframing for plumb. We do not charge for the measured survey or the written quote. Call (786) 321-3812 for your exact price - estimates are free.
Why Hialeah Gardens Homeowners Call Sightline Windows & Doors Hialeah Gardens for CGI Work

We are independently owned and operated under the Haven Standard, not a franchise or a manufacturer affiliate. That matters for CGI custom work because we can source across eight product lines - PGT, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux - when a CGI lead time or specification does not fit the opening. Our crews are background-checked, uniformed, and identified by license number before arrival, per Haven Clause 3. Every job leaves a documented photo record, not a verbal assurance. And the 365-Day Done Right Promise is written into the Haven Standard, not offered as a courtesy.
We have measured, ordered, and installed custom geometric windows across Hialeah Gardens since 2012, including the residential streets near Palm Springs North where street-level wind exposure and aging aluminum frames keep us busy year-round. We know what fails first in this climate, and we document what we find so you can verify it.
FAQs
No, if the repair uses OEM or equivalent-spec parts and follows CGI’s published installation guidelines. We document parts provenance and procedure in the photo record so warranty questions have evidence, not argument. Call (786) 321-3812 if you need a warranty review before deciding.
Standard custom shapes run 4 to 6 weeks; oversized or specialty impact laminates run 6 to 8 weeks. We verify factory lead time at the measured survey and write it into the scope document so you have a date, not a guess. Call (786) 321-3812 to check current lead times.
Yes, we match anodize or Kynar 500 paint from the original specification, documented by the frame stamp and our field photograph. We do not eyeball color; we order from the documented code. Call (786) 321-3812 to schedule a finish verification.
Replace if the glass is impact-rated and the laminate edge is exposed; repair with re-glazing if the frame is sound and the failure is seal-only. We diagnose at the measured survey and tell you which path costs less over the unit’s remaining life, not just today. Call (786) 321-3812 for a free second opinion on any written estimate.
Yes, for all impact-rated and structural modifications; we include permit costs in the written quote and schedule inspection. Non-impact replacement-in-kind may not require permitting, and we note this in the scope so you know what was filed and what was not. Call (786) 321-3812 to confirm permit requirements for your specific job.
Written by Sonia Raman, Owner, Sightline Windows & Doors Hialeah Gardens at Sightline Windows & Doors Hialeah Gardens, serving Hialeah Gardens and nearby areas.










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