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
AfterCGI Custom & Geometric Windows in Doral: What to Know First
We install and service CGI custom and geometric windows in Doral as an independent CGI service provider, with most measured surveys scheduled within two business days and written quotes delivered before any work begins. Custom shapes - arches, circles, trapezoids, and oversized rectangular units - typically run 4-6 weeks from signed quote to install, depending on CGI’s current production queue for the Impact and Estate series. Our pricing starts around $1,200 per opening for standard geometric shapes in aluminum impact-rated frames, with complex curves and oversized units running higher.
This page is for Doral homeowners who already own CGI products or are specifying them for a new build or renovation, and need someone who knows the difference between a Series 800 arch-top and an Estate Collection radius window without looking it up. Call (786) 460-1563 to schedule your free measured survey.
How CGI Products Fail - and How We Fix Them
- Impact-series laminated glass delamination at the radius - In CGI’s Impact line, the curved corners of geometric units see concentrated thermal stress where the aluminum frame meets the laminated lite. The interlayer separates in a wedge pattern starting at the throat of the curve. We see this most in west-facing Doral elevations where afternoon heat builds against the frame. Our fix: we specify a warm-edge spacer upgrade on replacement and verify the glazing pocket depth with a feeler gauge before ordering, not after the unit arrives.
- Estate Collection double-hung sash drop on arched tops - The Estate series uses a heavier 3-1/4″ frame depth, and the arched top rail adds asymmetric weight to the upper sash. Balance springs fatigue 30-40% faster than in rectangular units, especially in the 6/0 and larger sizes. We replace with OEM-spec balances rated for the actual sash weight, not the catalog standard, and we weigh every sash on a digital scale before specifying.
- Series 800 fixed geometric water intrusion at the sill pan - CGI’s Series 800 fixed units ship with a standard sill pan that works fine for rectangles. On trapezoids and polygons, the angled jambs create low points where water pools if the pan isn’t field-notched and sealed. We fabricate custom sill pan extensions from .040″ aluminum and bed them in SikaFlex-221, then document the weep path clearance with photos.
- Oversized custom unit frame racking during install - CGI will build up to 60″ x 120″ in some Impact configurations, but the frames flex in the middle if the rough opening isn’t plumb within 1/8″ over the full height. We’ve rescued three Doral jobs where another installer forced the unit in and cracked the corner keys. We pull a laser level on every oversized opening and shim the sill before the unit touches the block.
- Spandrel glass thermal stress fracture in commercial-geometric applications - CGI’s spandrel lites in custom shapes often get specified with ceramic frit on surface #2, but the Doral sun load on dark-colored curtainwall spandrels can exceed 140°F surface temperature. The thermal gradient between fritted and clear edge zones fractures the lite from the corner inward. We spec heat-strengthened spandrel with a 50mm minimum frit-to-edge setback, and we document the edge deletion on the shop drawing approval.
Our CGI Custom & Geometric Windows Process
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Measured survey - Sonia Raman or a licensed technician arrives with a digital measuring system, pulls a laser level on the rough opening, and records frame depth, squareness, and plumb to 1/16″. The customer keeps this document. Measure it right the first time. Everything else follows from that.
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Diagnostics and scope - We identify the CGI series, manufacturing date code, and any field modifications. For repairs, we determine whether the failure is glazing, hardware, or frame, and whether OEM parts are still available or a quality aftermarket substitute is warranted.
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Written quote - Haven Clause 1: the price is fixed to the measured survey. The quote specifies CGI model, glass package, hardware finish, and installation method. No change orders.
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Fabrication and delivery - For custom units, we verify CGI’s shop drawings against our field measurements before releasing to production. We catch discrepancies here, not on the truck.
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Install and test - Background-checked, uniformed crew with license number confirmed before arrival. We install per CGI’s published guidelines, not shortcuts. Every unit is operated, every weep path is cleared, and every seal is photo-documented.
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Documentation and guarantee - The customer receives the photo record, the completed scope document, and the 365-Day Done Right Promise stamped under the Haven Standard. Haven Clause 4: Evidence on every job.
Before
AfterWhat CGI Custom & Geometric Windows Costs in Doral
These are real ranges from our 2024 Doral jobs, written before any work started:
| Scenario | Typical Range |
|---|---|
| Standard geometric (circle-top, trapezoid) in Impact series, installed | $1,200 - $2,400 |
| Large radius or arch-top, Estate Collection, impact-rated | $2,800 - $4,500 |
| Oversized fixed custom (50″+ width), Series 800, with crane set | $5,500 - $8,000+ |
| Geometric sash replacement (glass + balance hardware), existing frame | $650 - $1,100 |
| Field-measured survey and written quote | No charge |
What moves the price: curve complexity (true radius vs. segmented), impact rating vs. non-impact, glass package (Low-E, tinted, laminated), and whether the rough opening needs reframing. We also carry PGT, CWS, ES Windows, and ECO Window Systems if a cross-brand solution fits the opening better. Call (786) 460-1563 for an exact quote - estimates are free.
Why Doral Homeowners Call Sightline Windows & Doors Doral for CGI Work
We’ve worked windows and doors across South Florida since 2012, with crews who’ve put in time at projects throughout Doral, including work near Beacon Lakes and the commercial corridors along NW 87th Avenue. That local footing means we know which elevations cook which frames, and we know CGI’s lead times before their website updates them.
The Haven Standard governs every job: written price before work starts, verified crews with license numbers, documented photo records, and the 365-Day Done Right Promise. We’re not the fastest - we’re the ones who measure twice and show you the document. Eight manufacturer lines means we specify what the opening requires, not what we need to move. If your CGI unit is repairable, we say so. If it’s not, we say that too, and we show you why in the photo record.
FAQs
No. CGI’s product warranty covers manufacturing defects in materials and workmanship, regardless of who installs or services the unit. As an independent CGI service provider, we follow CGI’s published installation guidelines and use OEM-spec parts where required, so warranty claims remain valid. We document our work to support any future claim you need to file with CGI directly. Call (786) 460-1563 if you have a specific warranty concern - we’ll review it at no charge.
Usually, yes. CGI’s anodized and painted finishes have shifted slightly over production years, so we pull the manufacturing date code from your frame and cross-reference CGI’s current color run. For older Estate Collection units, we sometimes need to submit a physical sample for custom color matching. We tell you before ordering, not after the unit arrives.
Repair makes sense when the frame is sound and the failure is isolated to glass, hardware, or seal. Replace when the frame is corroded, the geometry has shifted, or the energy performance no longer meets current Florida code. We assess both paths during the free measured survey and give you a written price for each. Call (786) 460-1563 to schedule.
Standard custom shapes from CGI’s Impact line currently run 4-6 weeks from drawing approval. Estate Collection and oversized units can extend to 8-10 weeks. We verify CGI’s production queue at quote time and update you if it shifts. Rush orders are not available - we don’t promise what we can’t control.
Yes, for any job requiring structural modification or impact-rated replacement per Miami-Dade County code. We pull the permit, schedule inspection, and pass it. The permit cost is itemized in your written quote, not added later. Non-impact maintenance glass replacements in existing openings typically don’t require permitting - we tell you which category your job falls into before you sign.
Written by Sonia Raman, Owner, Sightline Windows & Doors Doral at Sightline Windows & Doors Doral, serving Doral and nearby areas.