New windows and doors improve comfort, cut energy bills and add long-term value to your home. Juniper Windows San Antonio pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
CGI Windows & Doors in San Antonio, TX | Juniper Windows San Antonio
We provide independent CGI windows and doors service across San Antonio, from single-sash repairs in Monte Vista to full frame replacements in Stone Oak. We’re not a CGI dealer or authorized warranty center. What we are is the crew that has disassembled and rebuilt CGI products across Bexar County for over a decade, so we know exactly how these windows fail under our heat, UV, and shifting clay soil. Call (903) 488-7019 for a free estimate. If you own CGI products and need them working right, we can help.
Why San Antonio Residents Choose Us for CGI Service
Most window companies in San Antonio will happily sell you a new product. Fewer know what to do with the CGI units already in your home. Our technicians have torn down 1980s Thermal Series double hungs, rebuilt Estate Collection casements, and replaced glazing beads on Sentinel Series impact windows. That’s the difference between a sales pitch and a repair. Sean Mackey, our owner, picked up his fundamentals at Los Angeles Trade-Technical College before spending years on residential and light commercial installs across Southern California. He brought that same no-shortcuts approach here, and he’s been serving San Antonio homeowners for well over a decade. We stock factory-spec CGI balances, locks, and weatherstripping profiles because generic aftermarket parts rarely match CGI’s exact tolerances. If a sash binds or a lock stops throwing, we’d rather install the part CGI engineered for the frame than force something close enough. You can read more about our approach on our CGI sales & service page.
Common CGI Windows & Doors Problems We Solve in San Antonio
- Fogged or hazy glass in original CGI Thermal Series units from the 1990s. San Antonio’s temperature swings and high UV break down the edge seals on insulated glass units, letting argon escape and moisture creep between the panes. We order exact-size replacement IGUs from a trusted national fabricator rather than forcing generic units into a CGI frame.
- Warped or cracked vinyl frames on south-facing CGI windows. Surface temperatures on south and west elevations in San Antonio routinely exceed 140°F in July and August. That heat softens vinyl over time, causing sashes to bind, tilt latches to misalign, and air leaks at the meeting rail. We see this most often in 1970s-90s brick veneer homes in neighborhoods like Helotes and Leon Valley.
- Corroded roller assemblies on CGI horizontal sliders. In older San Antonio neighborhoods built on expansive clay, foundations shift with moisture cycles. A frame that’s out of square by even a quarter inch puts uneven pressure on slider rollers, which leads to corrosion, flat spots, and a door or window that drags. We realign and replace roller cartridges, then shim where the frame allows.
- Failed compression seals and weatherstripping on CGI casement operators. Winter cold snaps in San Antonio expose every gap in a seal. Summer droughts dry out and crack the same weatherstripping, letting dust and humidity inside. We replace worn CGI bulb seals and compression strips with factory-profile material so the window actually closes tight again.
- Shattered or cracked impact glass in CGI Sentinel Series windows. Hail season in San Antonio is real. When an impact-rated unit takes a hit, the inner laminate may hold while the outer pane cracks. We assess whether the glass pack can be replaced or whether the full sash needs a new IGU, and we’ll tell you straight what’s worth repairing.
CGI Service in San Antonio: What Local Conditions Mean for Your Equipment
San Antonio’s downtown and near-northside neighborhoods sit atop the Balcones Escarpment, where limestone bedrock is only 1 to 3 feet below the surface. That means homes in Monte Vista and Olmos Park often have zero room for foundation give. When a CGI window opening is out of square because the frame was installed tight to limestone, every square of a replacement sash has to match the original rough opening or the unit will bind within months. We measure each opening at multiple points before ordering any sash or frame component. It’s not the kind of detail a manufacturer brochure covers, but it’s exactly the kind of thing that determines whether your replacement window operates smoothly for two years or twenty. In our San Antonio service area, we treat every CGI job as if the opening is fighting back, because around the Escarpment, it usually is.
CGI Models & Products We Service in San Antonio
We work on the full CGI product range found in San Antonio homes: Thermal Series single-hung and sliding windows, Estate Collection casements and picture windows, Sentinel Series impact-rated windows, and Classic Series double hungs. Our parts approach is simple: use factory-spec CGI components whenever the profile matters (balances, locks, weatherstripping, tilt latches), and use exact-size replacement glass from a trusted fabricator when the IGU fails. For frames twisted beyond shimming or glass packs that have delaminated, we’ll recommend full sash or frame replacement over repeated patch repairs. We’d rather tell you the truth on the front end than chase a repair that won’t hold.
CGI Service Pricing in San Antonio
- Single sash IGU replacement (fogged or cracked glass): $280 – $540 depending on glass size and coating
- Balance cartridge replacement for one sash: $120 – $220
- Weatherstripping and seal replacement per window: $90 – $180
- Slider roller assembly replacement: $140 – $260 per panel
- Full sash replacement (warped or damaged frame): $380 – $800
What drives the cost: glass dimensions, whether we’re replacing one sash or two, whether the frame is still square, and whether parts are in our local stock or need to ship. Every job gets a written price before we start, and that number is the number. No estimate that morphs into a surprise invoice. Call (903) 488-7019 for an exact quote. Estimates are free.
Serving San Antonio, TX - Our Local Coverage Area
We’re based in the San Antonio area and offer our Window Replacement in San Antonio, so we know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – CGI Windows & Doors in San Antonio
How do we fix fogged glass in our CGI windows from the 1990s without replacing the whole frame?
You replace only the insulated glass unit, not the frame. We remove the glazing beads, pull the failed IGU, and order an exact-size replacement from a national fabricator that matches the original glass dimensions, thickness, and coating. In most San Antonio homes, a 1990s CGI Thermal Series frame is still structurally sound, so replacing just the glass runs $280 to $540 per sash and takes one visit. Call (903) 488-7019 for a free estimate.
Are CGI windows from the early 2000s in San Antonio worth repairing, or should we upgrade to impact glass?
It depends on the frame condition and where the window sits. If the vinyl frame is square, the seals are intact, and the only issue is a failed balance or worn weatherstripping, repair makes sense. If you’re on a south or west elevation with warped sashes and failed seals, upgrading to impact-rated glass may be the smarter long-term move, especially with San Antonio’s hail exposure. We’ll give you both numbers in writing and let you decide. Call (903) 488-7019 to schedule an assessment.
Why do our CGI sliding windows in an older Monte Vista home stick when it rains?
Monte Vista sits on the Balcones Escarpment with limestone very close to the surface. When rain soaks the clay soil, the foundation moves slightly, and a frame that was square in dry weather is suddenly binding. The slider rollers or track take the brunt of it. We realign the frame, replace worn roller assemblies, and shim where the geometry allows. Call (903) 488-7019 for a free estimate.
Can you retrofit our existing CGI single-hung windows to improve energy efficiency without full frame replacement?
Yes. The most common retrofit we do on CGI single-hung windows in San Antonio is replacing the original single-pane or failed double-pane glass with a modern low-E IGU, then installing fresh compression seals and pile weatherstripping. That combination cuts heat gain and air leakage without tearing out the frame. If the frame itself is warped or cracked, we’ll tell you that too, and give you a full replacement price.
What is the most common CGI problem you see in San Antonio’s northwest suburbs like Helotes?
Failed insulated glass units in builder-grade 1990s CGI windows, usually showing up as fogging between the panes. The high UV and heat in Helotes accelerate edge-seal failure. We replace the IGU with an exact-size unit and typically finish the job same day. Call (903) 488-7019 for a quote.
Service Areas Near San Antonio
We provide CGI windows and doors service throughout San Antonio and the surrounding communities. You’ll find our crews in Fair Oaks Ranch, Windcrest, Leon Valley, Castle Hills, and Floresville. If you’re in CGI service in Fair Oaks Ranch, or need CGI service in Windcrest, we’re close by and ready to help.
Book Your CGI Service in San Antonio Today
If your CGI windows are fogged, binding, or leaking air, don’t wait for the next cold snap to find out. Call (903) 488-7019 to schedule your free estimate. Sean Mackey and our San Antonio crew will give you a written price before any work starts, and that’s the price you pay. We answer the phone live, 24/7.
Written by Sean Mackey, Owner at Juniper Windows San Antonio, serving San Antonio since 2001.
Six Reasons Homeowners Choose Juniper Windows San Antonio
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.