







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Construction in San Antonio, TX | Sawyer Remodel San Antonio
We provide independent CGI window and door service across San Antonio, from Alamo Ranch to Universal City and every slab-on-grade neighborhood between. Our crew knows these window systems well because we’ve seen how San Antonio’s expansive clay soils, hail, and relentless sun stress them. If your CGI windows are binding, leaking, or just not closing square anymore, call Sawyer Remodel San Antonio at (432) 547-6806 for a free estimate.

What makes our CGI work here different is simple: we don’t just swap glass. We diagnose why the opening failed, fix the underlying slab or flashing issue, and only then reset or replace the window. That’s the difference between a repair that lasts one season and one that lasts a decade on San Antonio soil.
Why San Antonio Residents Choose Us for CGI Service

Luca Romano founded this crew after learning the trade at Los Angeles Trade-Technical College, then spending years swinging hammers across the Southwest. He still does a final walkthrough on every job himself. That’s how we ended up re-squaring five CGI Estate windows on a home off Culebra Road near Alamo Ranch after clay heave left the sashes dragging. Our tech pulled the brickmould, shimmed the frames back to level, replaced the weatherstripping with heavy-duty silicone bulbs, and reset the glazing beads. The owner said every window closed with a solid thunk for the first time in three years.
That’s the kind of repair you only get from a crew that’s actually worked on CGI products in this city’s specific housing stock, not one reading a manual. We carry OEM CGI hardware and glass packs whenever they’re available. When a series is discontinued, we source high-grade aftermarket weatherstripping and balance hardware that matches the original profile. Every job runs under The Relay Standard: a written price before work starts, live arrival time, and photo updates before and after.
Styles & brands we work with







Common CGI Construction Problems We Solve in San Antonio
Here are the CGI failure modes we see most often in San Antonio, and what’s actually causing them beneath the surface:
- Aluminum frames binding at corners: On homes over expansive clay, slab heave pushes the rough opening out of square. CGI aluminum frames are rigid, so they don’t flex with the movement – the corners bind and sashes stick or refuse to close squarely. We re-square the frame, shim it back to level, and reset the glazing before the window gets damaged further.
- Degraded glazing bead and weatherstripping on Estate windows: Older CGI Estate Collection windows on west-facing elevations bake in San Antonio’s sun. The glazing bead turns brittle, the weatherstripping flattens, and you get air leaks plus condensation between panes. We replace both with heavy-duty silicone profiles rated for our UV intensity.
- Warped vinyl frames on west-side homes: Prolonged heat does something to vinyl CGI frames in neighborhoods like Alamo Ranch: they warp slightly, throwing the lock off-center so the latch won’t engage. Sometimes it’s just a lock realignment. Sometimes the sash needs rebuilding. We’ll tell you which one before we touch it.
- Mullion gaps on wide openings after hail and wind-driven rain: When original flashing wasn’t stepped correctly for stucco or brick veneer, wind-driven rain finds the gap around CGI mullions. Hail accelerates the problem by denting the aluminum and breaking the seal. We pull the mullion, reflash it properly, and replace any damaged sections.
- Failed seals and interior fogging: San Antonio’s temperature swings – hot days, fast cool-downs after storms – stress the insulated glass units on older CGI models. Fog between the panes almost always means a failed seal. We source glass packs that match the original spec and install them with fresh glazing bead.
CGI Service in San Antonio: What Local Conditions Mean for Your Equipment

Here’s what contractors in flatter parts of Texas rarely deal with. On San Antonio’s northwest side, neighborhoods like Alamo Ranch and Helotes sit on what local crews call “roller coaster” slabs. The expansive clay heaves so dramatically between wet and dry seasons that floors visibly undulate. You can stand at one end of a hallway and see the swell in the middle.
For CGI windows and doors, that kind of movement means the rough opening changes shape after installation. Standard installs fail within a few years because the frame was anchored to a surface that never stops moving. Our fix is different: we anchor frames to floating headers and use perimeter backer rod so the window has room to flex with the structure instead of fighting it. If you’ve had a CGI window installed in Alamo Ranch and it’s already sticking or leaking, the slab moved more than the installer accounted for. That’s not a product failure – it’s an installation failure we know how to correct here in San Antonio.
CGI Models & Products We Service in San Antonio
We service the full CGI lineup: the Estate Collection, Classic Collection, Sentinel Series, and Craftsman Series. That includes aluminum and vinyl frames, impact-rated and non-impact glass, single-hungs, sliders, casements, and fixed picture windows. Our CGI sales & service work covers everything from single-sash replacements to full multi-opening repairs on existing installs.
For parts, we lead with OEM whenever the series is still in production. When it’s not, we use aftermarket weatherstripping and balance hardware that matches the original load rating and profile. The goal is simple: the window closes the way CGI built it to, with no compromise in air sealing or operation. We keep common San Antonio-specific failure parts stocked locally so we’re not waiting two weeks on a glazing bead.
See the difference
Before
After
Before
After
Before
AfterCGI Service Pricing in San Antonio

Pricing for CGI work in San Antonio depends on the scope: a weatherstripping replacement costs far less than re-squaring five frames after a slab heave. Here’s where our typical jobs land:
| Service | San Antonio Price Range |
|---|---|
| Impact Window Installation | $8,000 – $25,000 |
| Window Replacement | $4,500 – $15,000 |
| Roof Repair (CGI-adjacent flashing & mullion work) | $400 – $1,800 |
| Metal Roof Installation (full system) | $15,000 – $40,000 |
What drives the number is what’s underneath the window: if the opening has moved, you’re paying for structural correction plus the window work. A free estimate from us includes the diagnosis, the measurements, and a written line-item price. Call (432) 547-6806 and we’ll put the exact number in writing before any work starts.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – CGI Construction in San Antonio
Yes, in most cases. If the slab has shifted but the frame is still structurally sound, we can re-square the window by shimming the frame back to level, resetting the glazing bead, and replacing worn weatherstripping. If the slab movement is severe enough that the opening is no longer square by more than a quarter inch, we’ll recommend realigning the opening structurally before reinstalling the window. Skipping that step means the window fails again within a few years. Call (432) 547-6806 for a diagnosis – the estimate is free.
Older CGI Estate windows are worth repairing if the frames are square, the glass packs are intact, and the only failures are weatherstripping, glazing bead, or hardware. For more extensive updates, explore our Bathroom Remodeling in San Antonio. Those repairs typically run a few hundred dollars. If the frames have corroded from years of San Antonio sun, the seals have failed on multiple panes, or the aluminum is dented from hail, replacement starts to make more financial sense. We’ll give you both numbers and let you decide – no pressure either way.
Yes, we install CGI windows in both stucco and brick veneer openings across San Antonio as your trusted General Contractor in San Antonio. The key difference is flashing: stucco requires stepped flashing with weep screeds, while brick veneer needs through-wall flashing that drains to the exterior. We cut the existing cladding back, install the window on a floating header when slab movement is a concern, and rebuild the flashing to match the cladding system. The work gets done to code and pulled permits pass inspection.
Look for dents in the aluminum frames, cracks in the glazing bead, broken seals showing fog between panes, and water staining around the interior trim after storms. Hail in San Antonio often hits the mullions and meeting rails hardest. If your window still opens and closes but you can see dent marks on the metal or moisture between the glass, get it checked before the seal failure spreads to the insulating gas fill. Call (432) 547-6806 and we’ll do a hail assessment as part of a free estimate.
In most cases, yes. CGI has discontinued certain profile designs and glass options over the years, but we have access to aftermarket suppliers who replicate the original extrusion dimensions and glass spec closely. For a single damaged window on a multi-window elevation, we can often match the sightlines well enough that the repair is nearly invisible from the curb. If an exact match isn’t possible, we’ll show you side-by-side photos before ordering anything so you know exactly what’s going in.
Service Areas Near San Antonio
Our crew covers San Antonio and the surrounding metro, including CGI service in New Braunfels, CGI service in Alamo Heights, Universal City, Timberwood Park, and Kirby. If you’re within 45 minutes of San Antonio and own a home with CGI windows or doors, we’ll come out for the free estimate. See our full San Antonio service area for details on coverage zones.
Book Your CGI Service in San Antonio Today
If your CGI windows are sticking, leaking, fogging, or just not closing the way they should, don’t wait for the next storm to make it worse. Call Sawyer Remodel San Antonio at (432) 547-6806 for a free estimate. We’ll come out, diagnose the real problem, and put a written price in your hands before any work begins.
Written by Luca Romano, Owner at Sawyer Remodel San Antonio, serving San Antonio since 2005. The craft comes first. Everything else follows.











