CGI Window Installation Nationwide | Sightline Windows & Doors Lantana

CGI Window Installation: The Lantana Owner’s Guide

CGI window installation in Lantana typically runs $340-$780 per opening for standard impact-rated units, with most residential jobs completed in one working day. We stock CGI-compatible hardware, fasteners, and flashing systems on every Sightline truck, and we measure, quote, and install under the same Haven Standard document. Most Lantana homeowners discover their CGI window needs attention when the sash won’t lock flush after a storm season, or when they notice daylight between the frame and the wall that wasn’t there when the house was new.

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Which CGI Models This Applies To

CGI manufactures three residential window series we install regularly in Lantana: the Estate Series (aluminum impact-rated), the Sentinel Series (vinyl impact-rated), and the WinGuard Aluminum line. Each uses distinct frame depths, glazing stops, and anchor patterns. The Estate Series carries a 4-9/16 inch frame depth with a integral nail fin; the Sentinel vinyl line runs 3-1/4 inch with a block-frame option for stucco returns. The model number is stamped on the spacer bar visible when you open the sash, or on the original installation label often found on the head jamb behind the blinds.

We are an independent service provider, not affiliated with CGI. For hardware failures, we source OEM latches, balances, and weatherstripping direct from CGI’s Opa-locka distribution center. For installation components, we often use Florida Building Code-approved equivalents from our inventory, documented in your written scope with the manufacturer and rating printed beside each line item. One compatibility gotcha we see in Lantana: the Estate Series 4000 double-hung uses a proprietary tilt-latch clip that looks identical to the WinGuard version but mounts on a 3/16 inch different centerline. The wrong clip cracks the sash rail within two cycles.

Signs Your CGI Window Installation Is Failing

• The sash drifts closed or won’t stay open. This points to a failed balance system, either the coil spring or the block-and-tackle cartridge depending on your CGI series. In Lantana’s salt air, we’ve seen balance corrosion accelerate from ten-year expected life to six when the weep holes are painted shut and condensation pools in the frame.
• Visible gap between frame and wall, or interior drywall cracking at the perimeter. The installation fasteners have backed out, or the original installer missed structural members and the frame has shifted under wind load. This is structural, not cosmetic, and it compromises the impact rating.
• Water staining on the sill or below the window after ordinary rain. The pan flashing was omitted or the end dams were cut short during original installation. CGI windows are water-managed, not water-tight; they rely on proper sill pan and weep path. Block those, and the water finds your drywall.
• Lock won’t engage or requires force to latch. Either the keep has shifted with frame movement, or the multipoint lock mechanism has seized from grit and salt accumulation. Forcing it bends the cam and converts a $45 hardware fix into a $220 sash replacement.
• Condensation between the glass panes. The insulating glass unit seal has failed. CGI’s standard IGU warranty is ten years from manufacture, but the installation date and the glass stamp date often differ by eight to fourteen months. We photograph the etched stamp and check both dates before quoting.

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Replacement Cost & What’s Included

What drives the range: the series (Estate aluminum commands more than Sentinel vinyl), the opening size, whether the original installation was flashed correctly, and whether we need to match stucco texture or interior trim. Every quote is a written line-item document you keep. The price on that document is the price on the final invoice. Haven Clause 1, Have it in writing, means we do not start work until you have the number in hand. Our 365-Day Done Right Promise covers labor and installation materials; manufacturer defects pass through to CGI’s warranty, which we document and file on your behalf.

DIY or Call Us?

There is safe checking, and there is work that requires a crew.

An owner can verify the model stamp, photograph the failure, and confirm whether the weep holes are clear. Do not attempt to remove a fixed sash or operate on the balance system. CGI impact-rated windows contain tempered or laminated glass under spring tension; a released balance or dropped sash can cause serious laceration. We have replaced units in Lantana where a homeowner’s pry bar slipped and shattered the IGU, turning a $280 hardware call into a full replacement.

Frame removal and reinstallation affects the wall’s water barrier and the structural attachment to the FBC-required wind load. If your original installer skipped the sill pan or used the wrong fastener spacing, that error is now your problem on resale inspection. We pull permits when required by Palm Beach County, pass inspection, and leave the photo record and permit closure in your file. Call (561) 461-2062 to schedule your free estimate. Bring a competitor’s written quote and we will review it at no charge.

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