CGI Windows & Doors Service Nationwide

Why San Francisco Homeowners Choose CGI Windows & Doors

Meridian Windows and Doors San Francisco provides independent Cgi in San Francisco service, repair, and replacement across San Francisco, working on everything from CGI 400 Series single hungs in Richmond District Victorians to 9500 Series three-panel sliders in Mission Bay condos. We are not a CGI dealer or authorized service center, which means our recommendations are based on what the window actually needs, not on what the manufacturer wants us to sell. Our techs have years of hands-on tear-down and rebuild experience with CGI’s extruded aluminum product line, and we stock OEM-equivalent parts milled to CGI’s original profiles. Call (831) 273-7126 for a written estimate on any CGI window or door in San Francisco.

Call (831) 273-7126

CGI earned its reputation building aluminum windows and doors that hold up to coastal weather, and San Francisco throws plenty of that at a window. The difference with our shop is that we work exclusively on the product architecture CGI uses: aluminum frames with deep pocket sills and snap-on glazing beads. That means we know which sealants survive the persistent marine layer on the west side and which shims hold a square reveal on a 40-year-old condo rough opening. If you own CGI windows in San Francisco, we can likely fix them faster and for less than a full replacement, and we will tell you straight when replacement is the better call.

Why Trust Meridian Windows and Doors San Francisco for Your CGI Windows & Doors?

Elliot Vance, owner of Meridian Windows and Doors San Francisco, completed his carpentry and building trades program at Los Angeles Trade-Technical College before spending nearly two decades installing and retrofitting windows and doors across California. His crew has worked neighborhoods all over San Francisco, including a stretch of Victorians near Alamo Square where a 100-year-old frame and a modern double-pane unit rarely agree on the first measurement. Elliot still does his own final walk-through on every job because he would rather find the gap himself than hear about it from a homeowner.

That experience matters specifically for CGI work because CGI’s product line does not behave like wood or vinyl. The aluminum frames expand and contract at different rates than the glass, the snap-on glazing beads seat differently at 50 degrees in the fog than they do at 90 degrees in the sun, and the stainless rollers on the sliding doors react to salt air in ways that generic window techs misdiagnose. We have rebuilt enough CGI 400 and 450 Series units to know the difference between a worn pile weatherstrip and a bowed header, and we will not sell you a fix that does not address the actual problem. Every CGI service call we run in San Francisco comes with a written price before work begins and our 365-Day Done Right Promise: if the repair fails within a year, we come back at no charge.

Common CGI Windows & Doors Problems We Fix in San Francisco

• Shrunk glazing beads on west-facing exposures. CGI’s hard black neoprene glazing bead shrinks over time when it sits in direct afternoon sun and salt-laden fog, which is exactly what happens on Richmond and Sunset District windows facing the Pacific. The bead pulls back from the frame corners, glass starts to rattle, and water weeps past the seal during heavy fog and winter storms. We replace the bead with the correct durometer neoprene, re-seat the glass, and re-seal the pocket sill.
• Snapped die-cast zinc cam locks on 450 Series horizontal rollers. The stem on these locks shears after years of torque against accumulated salt, especially in units near the bay. The handle turns freely but the lock never engages, which is a security issue. We keep replacement die-cast cam locks milled to CGI’s original profile and swap them in on-site.
• Interlocking meeting rails worn flat on 400 Series single hungs. The pile weatherstrip on the meeting rail compresses and wears flat, leaving a gap as small as 1/16 of an inch. That gap is enough to fog the glass in neighborhoods near the Presidio where the air sits wet for months. We replace the pile weatherstrip with the correct pile height and density for CGI’s rail profile, which restores the seal and stops the fogging.
• Seized stainless steel roller cartridges on 9500 Series sliders. Grit from hillside runoff works into the bottom track and grinds against the stainless rollers until they lock up. The door gets harder to move, then stops moving. We pull the panel, clean the track, and install new stainless roller cartridges so the door glides instead of dragging.
• Left sash dropping off its rollers on CGI 450 horizontal rollers. The nylon carriage inside the roller assembly cracks after years of lugging against salt air and repeated use. The sash drops, the corner keys bind, and the window jams. On a 4th-floor Telegraph Hill condo, we pulled a 450 where exactly this had happened, slid in a new OEM-spec stainless roller cartridge, re-squared the sash on the corner keys, and added new pile weatherstrip. The window now glides with two fingers and the rattling against the west wind is gone.

CGI Parts & Our Repair-vs-Replace Approach

We stock OEM-equivalent extruded aluminum sash rails, stainless rollers, and die-cast cam locks milled to CGI’s original profile, meaning the same metal alloy and anodized finish as the original parts. These run about 30 to 40 percent below dealer list price. When the frame itself is still square and the glass is intact, we rebuild the operating hardware first. That means new rollers, new locks, new weatherstrip, and a re-seal of the glazing bead before we ever recommend pulling the whole window.

The threshold for replacement is specific: if the header or sill is bowed beyond 1/8 of an inch, the frame is no longer square, and no amount of hardware work will fix that. At that point we will show you the measurement, explain what it means, and give you a written price for a full frame replacement or our Window Replacement services depending on what the rough opening will accept. You will never get a pressure pitch to replace a window we can honestly repair. Call (831) 273-7126 and we will tell you which side of that line your window falls on.

Our CGI Service Process – Step by Step

1. 1
   Diagnosis. We measure the frame for square, check the glass for seal failure, inspect the rollers, locks, and weatherstrip, and identify the actual failure point. For CGI units, that means checking the glazing bead seating and the pocket sill drainage channels, which are the two places San Francisco’s marine layer does the most damage.
2. 2
   Repair or install. We rebuild the operating hardware with OEM-equivalent parts milled to CGI’s profile, or we install the new unit if replacement is the right call. For insert window replacement, we set the new CGI window into the existing frame and shim it square; for full frame replacement, we pull the old frame, flash the opening properly, and set the new frame level and plumb.
3. 3
   Test. Every CGI window and door gets cycled open and closed at least ten times after service. We check the lock engagement, the weatherstrip seal, and the drainage. If it does not run clean, we fix it before we leave.
4. 4
   Warranty. Every job is covered in writing by our 365-Day Done Right Promise. If the repair or installation fails within that year, we return at no charge. That includes a free second visit if needed during the guarantee period.

CGI Products We Service & Install in San Francisco

We service and install CGI’s core aluminum product lines: the 400 Series single hung, the 450 Series horizontal roller, the Estate Collection casement and awning, and the 9500 Series three-panel sliding door. We also handle retrofit and installation work on existing CGI units, including full frame replacement and insert window replacement for San Francisco homes that need new glass without disturbing the original trim or siding. We keep common OEM-equivalent parts for these lines in local stock so most repairs do not wait on a shipment.

We Also Service These Brands

While this page covers our CGI work specifically, our San Francisco crew also services and installs PGT, CWS, ES Windows, and ECO Window Systems products. The value of running eight manufacturer lines is that we are not trying to force a CGI window into a job that calls for something else.

FAQs – CGI Windows & Doors Service in San Francisco

Book Your CGI Service in San Francisco, CA

If your CGI windows or doors need service in San Francisco, call (831) 273-7126 and we will schedule a diagnosis. You will get a written price before any work starts, and the work is covered by our 365-Day Done Right Promise. Call us today and we will set a time that works.

Written by Elliot Vance, Owner at Meridian Windows and Doors San Francisco, serving San Francisco and the Bay Area. Measure twice, order once – the window doesn’t care about your schedule.