CGI Window Installation Nationwide

CGI Window Installation: The San Francisco Owner’s Guide

If you have a CGI window that needs installation or replacement in San Francisco, most full-frame installations run between $850 and $1,900 per opening depending on size, series, and whether we’re working on the first floor or a third-story bay window. We stock installation hardware for most CGI product lines and can typically schedule a measure-and-install within the same week once we’ve confirmed the exact model. The way most San Francisco homeowners find us is simple: they hear a whistle near the frame on windy afternoons, notice the sash no longer closes flush against the weatherstrip, or spot condensation between panes that used to be clear.

Call (831) 480-4124

That last one is the giveaway for a failed insulated glass unit, not necessarily a failed frame. And in a city where the marine layer sits on the Sunset and Richmond districts for months at a time, a window that has lost its seal does more than fog. It lets the damp in, quietly, until the frame itself starts to swell or the hardware corrodes. Keith Yamada and our crew have replaced enough CGI units along the western neighborhoods to know what that salt-air exposure does over a decade, and it’s why we read the existing frame carefully before pulling a single panel off the wall.

Which CGI Models This Applies To

CGI’s window lines break down into a few families that matter when you’re matching hardware or a replacement sash: the Estate Collection (aluminum, impact-rated), the Estate Series 100/200, and the newer Clarity vinyl line that CGI introduced for coastal residential work. Each has different frame depths and glazing bead profiles, which means a sash from a Series 100 will not drop into a Series 200 frame even if the glass dimensions are identical. That’s the compatibility gotcha we see most often: the opening is the same size, but the frame pocket depth is off by a quarter inch, and the result is a window that binds or leaks at the sill.

To identify your CGI model, look for a silver or white label etched on the top edge of the sash, or a paper label on the frame’s left jamb. If the label is gone, we measure the frame channel and bead profile, and that gets us to the series without guesswork. On the OEM-versus-aftermarket question: for anything still under CGI’s published warranty window, we use OEM parts, period. For out-of-warranty hardware like balances and tilt latches, there are quality aftermarket matches that perform as well for less money, and we’ll show you both numbers before you decide. We’re an independent San Francisco installer, not affiliated with CGI directly, which means our loyalty is to the frame in front of us and the family living behind it.

Signs Your CGI Window Installation Is Failing

• Condensation between the panes. The desiccant seal in the insulated glass unit has failed, and now the argon or krypton fill is gone. It will not dry out on its own in San Francisco’s damp climate; the only lasting fix is IGU replacement or a new sash.
• A whistle or hiss near the frame on windy days. This is almost always a failed compression seal at the weatherstrip or a frame joint that has opened up a millimeter. In the Sunset District, where the wind rolls off the Pacific with real consistency, a small gap becomes a draft you can feel from across the room.
• The sash drops when you let go of it. The spring balances have lost tension or snapped. This is the part that wears first on any double-hung, and CGI’s aluminum balances in older Estate windows are especially prone after ten or twelve years of coastal salt air.
• Hardware feels gritty or the lock no longer catches cleanly. Salt corrosion works on the cam and keeper faster than you’d expect. A lock that half-engages means the window is not doing its job, and it’s also the first place an intrusion attempt will test.
• You see daylight or feel air at the sill corners. The frame has shifted, or the original install left a void at the corners that foam or backer rod never filled. This is an installation defect, not a CGI product defect, and it’s the most common reason we get called to re-install windows another crew put in.

Replacement Cost & What’s Included

In San Francisco, a full CGI window installation runs $850 to $1,900 per opening. The spread comes down to three things: whether it’s a fixed picture window (least expensive) or a double-hung with hardware and balances (more labor), whether the frame is being replaced or we’re doing a sash-and-seal retrofit into an existing frame, and access. Third-floor work with no elevator means renting a lift or setting up scaffolding, and that cost shows up clearly on your estimate, not buried in a change order.

Every price we give is a written number before any work starts. It includes the window or component, all installation hardware, fasteners, sealants, shims, interior and exterior trim removal and reinstallation, and full cleanup. We use pet-safe sealants wherever they exist, and our crew runs drop cloths before a single tool comes out of the van. If the finished work is not right, the 365-Day Done Right Promise means we come back and make it right. No debate, no countdown. That’s the point of putting it in writing.

DIY or Call Us?

There’s a version of this job we are fine with a homeowner doing themselves, and there’s the version we’d rather you not attempt. Safe for a competent DIYer: cleaning the tracks, testing the lock operation, and marking where you feel a draft so you can describe it to us accurately. That information makes our first visit faster, and faster means fewer billable hours.

Where DIY goes wrong fast is pulling a sash or attempting to re-seat a frame that has shifted. A window under tension, a snapped balance, or a glazing bead that flies off under load can take a finger or send glass across a room. And in a San Francisco home, pulling a window on a foggy afternoon means your interior is now open to the same air that feeds the mold on the north side of every building in the Outer Sunset. If the window is fogged, binding, or whistling, call (831) 480-4124 and let us take the measurement. The estimate is free, and you’ll know the exact number before you decide anything.

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