CGI Window Installation Nationwide | Sightline Windows & Doors Boca Raton

CGI Window Installation: The Boca Raton Owner’s Guide

CGI window installation in Boca Raton typically runs $340 to $780 per opening for standard replacement, with impact-rated units starting around $520. We stock CGI frame assemblies, sash hardware, and glazing packages for same-day installation on most residential series. Most Boca Raton owners discover their CGI window needs attention when the sash won’t stay open in a southeast breeze, or when they notice daylight between the frame and the stucco after a storm season.

Call (561) 200-8592

Which CGI Models This Applies To

CGI manufactures several residential lines common in Boca Raton, and the part you need depends on the series stamped on the frame label. The Impact Resistant 300 Series and Sentinel by CGI use different frame depths, 2-5/8 inch versus 3-1/4 inch, and the hardware is not interchangeable despite similar appearances. The ES Impact Series (CGI’s aluminum-clad vinyl line) carries a separate parts catalog entirely.

To identify your unit, open the sash and locate the etched label on the glass spacer or the stamped metal tag on the frame jamb. You’ll need the series name, the nominal size (the “call size” is not the rough opening, measure the frame width and height to the nearest 1/8 inch), and the glass package code. OEM parts from CGI’s Opa-Locka distribution center carry a 10-year warranty and guaranteed fit. Quality aftermarket equivalents exist for hardware and weatherstrip, but we do not recommend aftermarket frame or sash assemblies for impact-rated units, the Miami-Dade NOA (Notice of Acceptance) certification travels with the original manufacturer. Sightline Windows & Doors Boca Raton is an independent service provider, not affiliated with CGI.

One compatibility gotcha we see in Boca Raton: the Sentinel by CGI line was refreshed in 2019, and post-2019 hardware kits use a 7/16 inch spindle diameter where pre-2019 units used 3/8 inch. The mounting hole spacing stayed the same, so the wrong kit will install but the operator will bind within a month.

Signs Your CGI Window Installation Is Failing

• Sash drops or won’t stay open. The balance shoe or coil spring assembly has worn out. In Boca Raton’s salt air, the nylon cam on CGI’s constant-force balance can degrade in 6 to 8 years, faster than the manufacturer’s 10-year specification suggests.
• Visible gap between frame and wall, or water staining on the sill. The installation flange has pulled, or the sealant bead has failed. This is not a window part failure, it is an installation failure, and it will rot the king stud if left unaddressed.
• Condensation between glass panes. The insulated glass unit (IGU) seal has failed. For impact-rated CGI units, the IGU includes laminated outer lite plus tempered inner lite, replacement requires matching the exact interlayer thickness to maintain the NOA.
• Operator handle turns but sash doesn’t move. The worm gear in the casement operator has stripped, or the scissor arm has corroded at the pivot. CGI operators use a zinc alloy housing that holds up poorly if the weep holes are clogged with Boca Raton’s fine limestone dust.
• Locking points misalign or won’t engage. The keepers have shifted due to frame racking, or the multipoint lock rod has bent from forced closure. On taller CGI units, the rod flexes if the sash is not supported during operation.

Before

After

Replacement Cost & What’s Included

The range exists because no two rough openings in Boca Raton are identical. A 1980s Spanish Colonial in Boca Del Mar with 1-inch stucco and no foam backing requires different remediation than a 2015 CBS home in Royal Palm Yacht & Country Club. Our written quote itemizes the frame cost, the glass package, the installation labor, and any stucco or trim repair, before any work starts. The 365-Day Done Right Promise covers the installation and the parts. We pull permits where required and pass inspection before final invoice.

DIY or Call Us?

There is no high-tension spring or electrical hazard in a CGI window, but there is a precision hazard. An owner can safely check the weep holes for blockage, verify the label information, and measure the frame for ordering. What goes wrong: installing a replacement sash without confirming the frame is square to 1/8 inch, which voids the warranty when the IGU fails six months later; using silicone instead of backer rod and polyurethane sealant at the perimeter, which leaks in the first driving rain; or forcing a balance shoe into a track cleaned with the wrong solvent, which cracks the nylon cam.

We carry CGI-compatible hardware, balances, and IGU specs on every truck. Measure it twice, write it down, then we can talk price. Call (561) 200-8592 to schedule your free estimate.

FAQs