







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Construction in San Antonio, TX | Elmstead Remodeling San Antonio
CGI window and door service in San Antonio comes down to two things: knowing the product and knowing the ground it sits on. We provide independent CGI service across San Antonio, and the one thing that makes our work here different is that we account for the limestone and clay under nearly every home. If you need a straight answer about your CGI windows or doors, call (432) 233-0976 for a free estimate and a written price before any work starts.
Why San Antonio Residents Choose Us for CGI Service

We work on CGI products every week, and we’ve spent years understanding how they behave in San Antonio specifically. Graham Stein learned the trade at Los Angeles Trade-Technical College and has framed, finished, and fixed homes across this city, including work near the King William Historic District where older windows demand patience. His crew writes every scope of work down before a single tool leaves the truck. The written price you sign is the price you pay, no line items added after demo day.
We’re an independent CGI service provider. We’re not manufacturer-affiliated or authorized, and we won’t pretend otherwise. That independence means we’re honest about repair-versus-replace. If a frame is racked from foundation settlement, a new sash alone won’t solve it, and we’ll tell you before you spend money on parts. Our team knows CGI’s product lines the way a mechanic knows a specific engine: what fails, when it fails, and whether a repair will actually hold up in this climate.
Styles & brands we work with







Common CGI Construction Problems We Solve in San Antonio
Here’s what we actually see on CGI windows and doors in San Antonio, tied to the conditions that cause them:
- Fogging or seal failure in dual-pane impact glass. San Antonio’s intense UV and summer heat beat on west-facing walls relentlessly. The insulated glass units in CGI Sentinel Series windows and Estate Collection windows eventually lose their seal, and condensation shows up between the panes. It’s a gradual failure, but once it starts, it doesn’t reverse.
- Casement and sliding windows that bind or misalign. Expansive clay soil shrinks during drought and swells after rain. Slab-on-grade homes shift, and window frames rack slightly out of square. A CGI casement that operated fine in January might stick in August. We re-shim frames to true square and replace worn balances with CGI OEM parts when available.
- Corrosion and pitting on aluminum cladding. Hard water irrigation overspray is a real problem in Alamo Heights and Terrell Hills, where sprinklers hit window frames daily. The mineral deposits eat into CGI’s aluminum cladding over time, leaving pitting that looks bad and weakens the surface. We clean, treat, and refinish where possible, or replace cladding if it’s gone too far.
- Caulking and flashing deterioration after thermal cycling. San Antonio swings from 100-degree afternoons to cool nights. Materials expand and contract thousands of times. Caulk around CGI door and window frames dries, cracks, and pulls away, and water intrusion follows during sudden downpours, especially where limestone-hardened soil lets runoff pool against foundations.
- Operation stiffness in CGI Targa Series windows. The Targa line uses a specific balance and track setup. When dust and fine limestone grit collect in the tracks, the window gets harder to open. We clean and lubricate with products that won’t attract more grit, and replace worn hardware when cleaning isn’t enough.
CGI Service in San Antonio: What Local Conditions Mean for Your Equipment

San Antonio is the only major Texas city without a zoning code. That single fact changes how CGI windows get installed and how they fail. A 1960s ranch can sit next to a modern three-story infill, and the new structure might cast shade on your west wall or redirect drainage toward your foundation in ways no code ever anticipated. We see CGI window installations that need custom flashing and shimming precisely because neighbors changed the water path. There is no ordinance to fall back on. The fix is field experience, which is what we bring.
Around Alamo Heights and Terrell Hills, bedrock can sit a foot below the surface. It changes anchoring and flashing decisions on exterior openings. Our crews have replaced CGI windows in those neighborhoods and learned to plan for the limestone before the first hole gets drilled.
CGI Models & Products We Service in San Antonio
We service the CGI Sentinel Series impact windows, CGI Estate Collection windows, CGI Clad Ultimate casements, and the CGI Targa Series. Our approach is always OEM first. We prefer CGI replacement sashes, balances, and weatherstripping whenever they’re available to preserve the impact rating you bought the window for. When OEM lead times are unacceptable or a trim piece has been discontinued, we’ll specify a proven aftermarket option with a clear explanation of what it means for your window’s performance. For broader questions about product selection or sales, see CGI sales & service.
See the difference
Before
After
Before
After
Before
AfterCGI Service Pricing in San Antonio

Here’s what CGI window work costs in San Antonio. These ranges are based on the projects we’ve completed across the city:
| Service | Typical Range |
|---|---|
| Impact Window Installation | $8,000 – $25,000 |
| Window Replacement | $4,500 – $15,000 |
| Storm Damage Emergency Repair | $400 – $1,800 |
What drives the price is scope: how many windows, what CGI line, whether the rough opening needs reframing after slab settlement, and what flashing condition we find. Your free estimate includes a written line-item price before any work starts. Call (432) 233-0976 for an exact number.
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
Can you replace just the glass in my CGI Sentinel impact window, or do I need the whole sash? In most cases you can replace just the insulated glass unit, as long as the sash and frame are still square and the seals are the only failure. If the frame has racked from slab movement, a glass-only fix won’t last, and we’ll tell you that before ordering parts. Call (432) 233-0976 for a free assessment.
Are CGI windows rated for the hail and wind we get in San Antonio? Yes. CGI’s impact-rated lines are tested for hurricane-level wind and flying debris, which covers the hail and straight-line winds we get in San Antonio. The rating applies to the full installed assembly, which is why flashing and anchoring matter as much as the glass itself.
Why do my CGI casement windows bind in the summer but not in winter? It’s almost always frame racking from expansive clay soil. Summer drought shrinks the soil under the slab, the foundation shifts slightly, and the window frame goes out of square. We re-shim the frame and replace worn hardware to bring operation back.
Do you stock CGI replacement parts locally, or do I have to wait weeks? We keep common CGI balances, weatherstripping, and hardware in stock for fast San Antonio turnaround. Factory OEM sashes and insulated glass units are ordered per job; lead times vary, so call (432) 233-0976 and we’ll give you a realistic arrival window before you commit.
Will my CGI window warranty still be valid if you do a repair? It depends on the specific warranty terms and the repair. Independent service doesn’t automatically void it. We’ll review what you have, explain what’s covered, and use OEM parts whenever possible to keep your protection intact.
Service Areas Near San Antonio
We serve San Antonio and the surrounding communities, including Schertz, Fair Oaks Ranch, Bulverde, Converse, and Live Oak. If you’re in one of those areas with a CGI window or door issue, reach out. See CGI service in Schertz or CGI service in Fair Oaks Ranch for location-specific details. For a full picture of our coverage, visit our San Antonio service area page.
Book Your CGI Service in San Antonio Today
Call (432) 233-0976 to schedule your free CGI service estimate in San Antonio. We answer the phone with a live person, not a recording. Write it down, price it once, do it right.
Written by Graham Stein, Owner at Elmstead Remodeling San Antonio, serving San Antonio since 2005.












