CGI Window Replacement Nationwide | Sightline Windows & Doors Lantana

CGI Window Replacement: The Lantana Owner’s Guide

CGI window replacement in Lantana typically runs $340-$780 per opening installed, depending on series, size, and whether the unit is impact-rated or standard vinyl. We stock CGI-compatible sashes, balances, and hardware for same-day replacement on most residential series, and we carry PGT, CWS, and ES Windows lines if your opening calls for a different performance tier. Most Lantana homeowners discover a CGI window needs replacement when the sash won’t stay open, the locking rail separates from the frame, or they feel salt-air draft around the weatherstripping after a storm season.

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Which CGI Models This Applies To

CGI manufactures several distinct series, and the replacement part you need depends on which line is in your wall. The Sentinel series uses a heavier extrusion with a 2-5/8 inch frame depth and integral interlock, while the Estate series runs a 2-3/8 inch frame with a removable glazing bead. The Targa impact-rated line carries a Miami-Dade NOA number stamped on the frame corner, usually beginning with 21- or 22- for units installed after 2017. Check the top sash track or the hinge side of the frame for a white adhesive label with the series name, date of manufacture, and the specific unit size code.

We are an independent service provider, not affiliated with CGI. For most Lantana homes built between 2015 and 2022, we see the Estate 4000 and Sentinel 3000 series most often. OEM sashes from CGI carry a 10-year warranty but run 3-4 weeks for delivery. We also source quality aftermarket equivalents from CWS and ES Windows that match the sightline and U-factor spec when the frame is sound and only the sash or balance assembly has failed. The wrong choice is ordering a sash without checking the frame square: a 1/4 inch racked opening will destroy a new sash in two years. We measure diagonals before we quote.

Signs Your CGI Window Replacement Is Failing

• The sash drops or won’t stay open. This usually means the coil balance or constant-force spring has lost tension. In Lantana’s salt air, we’ve seen balance springs corrode through in 6-8 years, half the rated lifespan, especially on east-facing windows that catch morning spray off the Intracoastal.
• Visible gap between the sash and frame when closed. The interlock rail or weatherstrip pile has compressed or pulled free. On CGI’s Estate series, the pile weatherstrip is replaceable separately; on older Sentinel units, it’s bonded to the sash and requires full sash replacement.
• Fogging between the glass panes. The insulating glass unit (IGU) seal has failed. Florida’s thermal cycling, 40 degrees some January mornings to 95 by afternoon, accelerates seal degradation. We measure the daylight opening and order a replacement IGU to the exact 1/16 inch, or replace the full sash if the frame shows UV chalking.
• Crank handle spins without moving the sash. The operator gearbox has stripped, common on CGI casement units after 8-10 years of operation. The operator arm and cover plate are replaceable separately on most series, but the mounting hole pattern changed in 2019, so we verify the stamp code before ordering.
• Frame corner separation or visible crack. This is structural failure, often from impact or from the thermal expansion mismatch between vinyl and the embedded steel reinforcement. In Lantana’s older homes near Ocean Avenue, we’ve found original CGI frames from the 2008-2012 building boom showing corner weld fatigue that requires full frame replacement, not just sash.

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Replacement Cost & What’s Included

These are installed prices with labor, disposal, and the Haven Standard documentation included. What moves the number: impact rating adds $200-$300 in material; second-story openings add $80-$120 for ladder work and safety rigging; stucco or Hardie board returns around the frame add 45-90 minutes of finish repair. We write every price before we start. The measured survey you keep and the final invoice are the same document, Haven Clause 1. Every replacement carries our 365-Day Done Right Promise, and we leave a documented photo record of the completed work.

DIY or Call Us?

There is safe checking, and there is unsafe attempting. A homeowner can verify the series label, measure the daylight opening width and height, and photograph any visible part numbers. That information saves us time and saves you money on the survey.

What we do not recommend: removing a sash with a failed balance spring, which is under tension and can release suddenly; cutting sealant from an impact-rated frame, which compromises the design pressure rating; or attempting to reglaze an IGU, which requires controlled environment fabrication. CGI’s impact sashes weigh 35-55 pounds depending on size, and a dropped unit will spider-crack the laminated glass or damage the low-E coating. Our technicians are background-checked, uniformed, and carry license numbers on the job record, Haven Clause 3. Call (561) 461-2062 to schedule your free estimate. We will measure, write the price, and let you decide.

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