CGI Window Installation Nationwide | Sightline Windows & Doors Weston

CGI Window Installation: The Weston Owner’s Guide

CGI window installation in Weston typically runs $340-$680 per opening for standard vinyl and aluminum frames, with impact-rated CGI units starting around $890 installed. We stock common CGI hardware and glazing components on our trucks, and most replacements are completed in a single visit once the measured survey is done. Homeowners usually notice the problem first as a draft they cannot trace, or a sash that no longer seats flush against the weatherstrip after a storm season.

Call (754) 812-9260

Which CGI Models This Applies To

CGI’s product stack breaks into three series most common in Weston: the Estate Series (aluminum impact), the Sentinel Series (vinyl impact), and the commercial-grade Targa line. The Estate 200 and 400 series share the same sill track profile but use different balance shoe widths - 5/8 inch versus 3/4 inch - and swapping them will bind the sash within two cycles. Sentinel vinyl frames carry a date stamp on the interior jamb label; pre-2018 units used a co-extruded weatherstrip that CGI has since discontinued, so we source a compatible aftermarket from our supplier in Pompano Beach that matches the durometer and fin profile.

We are an independent service provider - not affiliated with CGI - which means we specify parts by what the opening requires, not by what a single manufacturer catalog limits us to. For Estate aluminum frames, we keep OEM sash locks, tilt latches, and balance assemblies on the truck. For the discontinued Sentinel weatherstrip, we use an aftermarket equivalent with a 10-year field performance record in coastal Broward. The jamb label is the fastest identifier: a four-digit code starting with “ES” denotes Estate Series, “SE” denotes Sentinel, and the two digits that follow indicate the frame depth in inches.

Signs Your CGI Window Installation Is Failing

• Visible daylight between sash and frame. The compression seal has flattened or the glazing bead has pulled away from the leg. In Weston, the combination of salt air and thermal cycling hardens EPDM faster than inland specs suggest - we typically see this at 8-12 years on south-facing elevations.
• Sash drops or will not stay open. The balance assembly has lost tension or the pivot bar has cracked at the stress riser. CGI’s pre-2016 spiral balances had a known corrosion vulnerability where the tube meets the bracket; we replace these with a stainless-steel version.
• Condensation between glass panes. The insulating glass unit (IGU) seal has failed. This is not a frame problem but an IGU problem, and it requires full glass replacement, not defogging - the desiccant is already saturated.
• Operation grows rough or noisy. The sill track has deformed from impact loading, or the sash rollers have flat-spotted. On Estate Series sliders, the brass roller wheels oxidize in coastal air and develop flat spots that grind the track.
• Lock hardware does not engage fully. The keeper has shifted due to frame racking, or the lock mechanism itself has worn cam lobes. A lock that requires force to close is a lock that will soon fail to secure at all.

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Replacement Cost & What’s Included

The range reflects three variables: frame material (aluminum vs. vinyl), impact rating requirement, and whether the existing rough opening needs remediation. Every quote is the measured survey you keep - Haven Clause 1 - and the written scope does not change once work starts. The 365-Day Done Right Promise covers labor and installation; manufacturer defects are handled through CGI’s own warranty channel, which we facilitate.

DIY or Call Us?

There is one thing a homeowner can safely check: the jamb label. Write down the series code, the date stamp, and the NFRC performance numbers. That information determines whether the part you need is still manufactured.

Everything after that carries risk. Removing a sash to access a balance exposes the IGU to handling damage - a $400 mistake for a $20 part. Impact-rated glazing is heavy; a 36-by-72 Estate Series double-hung weighs over 80 pounds. And any work that disturbs the weatherstrip barrier compromises the pressure rating that the window was certified to. We have re-measured openings where a homeowner’s self-repair created a 3/16-inch rattle that the original frame did not have. Measure it right the first time. The window does not care how confident you were.

Call (754) 812-9260 to schedule your free measured survey. We will bring the parts that match your label, not the parts that are closest.

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