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

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

As an independent CGI service provider in Tamiami, we measure, order, and install CGI custom and geometric windows with written pricing delivered before any work begins. Most custom CGI orders ship within 4-6 weeks from approved drawings, with standard geometric shapes like half-circles and trapezoids often moving faster than full custom arched units. In Tamiami, where the sun loads off Tamiami Trail and the afternoon storms roll hard off the Everglades, we specify CGI’s impact-rated custom lines with the glazing package matched to the exposure, not the catalog default.

Call (786) 321-9118

This page is for homeowners who already own CGI windows or have selected them for a new installation and need shapes or sizes outside standard rectangles. If you’re pricing custom or geometric CGI units for a Tamiami property, call (786) 321-9118 to schedule a measured survey. You’ll keep the document, and the written quote will match it.

How CGI Products Fail - and How We Fix Them

• Sparta series fixed geometric units: The thermal break in the Sparta line’s custom shapes can separate at the mitered corners where the extrusion is stress-bent for radius work. We’ve replaced six of these in Tamiami over the past two years, all on south-facing gables where expansion cycling is worst. We order replacement sashes with reinforced corner keys and specify a silicone structural back-bedding rather than the standard tape gasket.
• Impact-rated custom laminates delaminating at the edge: CGI’s impact custom units use a PVB interlayer that can fog at the perimeter if the glazing pocket drains poorly. In Tamiami’s humidity, we’ve found this on second-story geometric units where the sill slope was built flat. We re-glaze with a warm-edge spacer and verify the weep path before the sash goes back in.
• Sentinel series operable custom shapes: The hinge-side sag on Sentinel casements wider than 36 inches is a known issue when the shape is trapezoidal rather than rectangular. The weight distribution pulls the sash off the hinge axis. We spec the heavy-duty hinge kit CGI makes for this application, not the standard hardware, and we shim the frame dead plumb so the load runs true.
• Coastal series oversized custom rectangles: CGI rates the Coastal line up to 60-by-96 inches, but we’ve seen frame twist on a 72-inch-wide custom unit in a Tamiami Trail-area home where the rough opening wasn’t squared during original construction. We pull the unit, sister the jack studs, and reset with composite shims that don’t compress like wood.
• Factory color mismatch on replacement custom sashes: CGI’s bronze anodize shifts lot to lot, and a replacement geometric sash ordered three years after original install can read two tones different on the same elevation. We always request a current color chip from the factory and hold it against the existing frame in Tamiami daylight before approving production.

Our CGI Custom & Geometric Windows Process

1. 1
   Measured survey. Sonia Raman or a verified crew member records every rough opening to the sixteenth, notes wall thickness, sill condition, and exposure. You keep this document.
2. 2
   Drawing approval. For custom shapes, we generate a CAD submittal showing the sightline, the daylight opening, and the frame profile. You sign before we order.
3. 3
   Parts decision. We use OEM CGI components for warranty-traceable work. Where CGI has discontinued a profile, we source quality aftermarket with documented Miami-Dade NOA equivalency.
4. 4
   Installation. Background-checked, uniformed technicians arrive with license numbers verified under Haven Clause 3. We install, seal, and test every operable unit for air and water infiltration.
5. 5
   Documentation. You receive the photo record, the final scope matching your original quote, and the 365-Day Done Right Promise stamped under the Haven Standard.
6. 6
   Follow-up. We call at 30 days to confirm operation and again at 11 months as a courtesy reminder before the promise period closes.

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What CGI Custom & Geometric Windows Costs in Tamiami

These are the ranges we quote in writing for CGI custom and geometric work in the Tamiami market:

• Standard geometric replacement (half-circle, quarter-circle, trapezoid): $1,400-$2,200 per opening, installed
• Custom arched or radius unit: $2,800-$4,500 per opening, depending on degree of curve and impact rating
• Oversized custom rectangle (over 48 inches in either dimension): $2,200-$3,800 per opening
• Re-glaze of existing custom sash (impact laminate replacement): $680-$1,100 per sash
• Frame repair or rough-opening correction: $400-$900 additional, only if needed

What moves the price: impact versus non-impact glazing, the complexity of the shape, whether the original frame can be retained, and the condition of the rough opening. We do not quote until we measure. Call (786) 321-9118 for a free estimate - the written price you receive is the price on the final invoice.

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

We’ve installed and serviced CGI products across Tamiami and the neighborhoods abutting Tamiami Trail since 2012. Our crew knows the difference between a Sparta and a Sentinel frame profile without pulling the sticker. If CGI lead times stretch or a line discontinues, we pivot to PGT, CWS, ES Windows, or ECO Window Systems with matching Miami-Dade NOA documentation - specified by what the opening requires, not by what is in stock.

Every job carries the Haven Standard: written price before work starts, verified crews, evidence on every visit, and no surprises. The 365-Day Done Right Promise is stamped on the scope, not offered as a courtesy. Measure it right, order it right, install it once.

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