







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why Orange County Homeowners Choose CGI Construction
We provide independent CGI Construction in Orange County, CA window, door, and exterior system service from coastal Laguna Niguel up through Anaheim’s older tracts. Our crews repair, retrofit, and replace CGI products without being tied to the manufacturer, which means we can give you the honest recommendation: repair when the frame is solid, replace only when the aluminum is too far gone. If you own a home in Orange County with CGI Sentinel, Estate, Clarity, or Targa products and something’s fogged, stuck, or leaking, call (424) 541-1701. We’ll give you a written number before anyone picks up a tool.
CGI products are engineered for hurricane zones, and they hold up remarkably well in Orange County’s dry Mediterranean climate. But holding up isn’t the same as never failing. Salt air eats at aluminum frames in beach cities like Huntington Beach and Newport Beach. Santa Ana winds that hit 60+ mph throw debris hard enough to stress impact glass. We see these failures every month, and we’ve built our service approach around fixing them the right way, not the fast way.
Why Trust Penhallow Remodeling Orange County for Your CGI Construction?

Trevor Nash grew up on the San Gabriel Valley side of Los Angeles, learned the trade at Los Angeles Trade-Technical College, and has spent decades running crews across Southern California. His team has worked throughout Orange County for years, including Irvine Cgi service projects in older residential neighborhoods near the Spectrum where 1980s and 1990s builds are now due for window and exterior updates. He’s the kind of contractor who gives you the number first, then picks up the tool.
Our technicians know CGI products at the component level. When we open a CGI Sentinel casement with a fogged pane, we already know the likely failure point: the desiccant has saturated inside the insulated glass unit, and the perimeter seal has degraded. When a CGI Estate slider sticks, we’re checking the roller hardware and the track alignment, not guessing. That detail work matters, because a wrong diagnosis costs you money. We carry OEM-compatible hardware and source factory glass packs when a warranty or exact match matters. For older out-of-warranty CGI units, we’ll recommend premium aftermarket sealed units that often outperform the original at a lower price. We’re independent, not a CGI-authorized dealer. That means we can tell you when repair beats replacement without any pressure to sell a new window.
Styles & brands we work with







Common CGI Construction Problems We Fix in Orange County
- Fogging and condensation between panes in CGI Sentinel Series windows. This is the most common issue we see in Orange County, and it almost always traces back to a failed seal on the insulated glass unit. Once the seal lets go, moisture gets in and the desiccant material saturates. In coastal cities like San Clemente and Laguna Beach, the salt-laden air accelerates this process by several years compared to inland homes. The fix is a new IGU (insulated glass unit), not a new window.
- Salt-air pitting and corrosion on CGI aluminum frames. If you live within a few miles of the coast in Orange County, you’ve probably noticed the white chalky bloom on your aluminum frames. That’s oxidation from salt spray. Left alone, it can progress to actual pitting and structural weakness around the corners and fasteners. We clean, treat, and seal frames where the corrosion is surface-level. If the frame has lost structural integrity, we’ll show you and quote replacement honestly.
- Sticking or misaligned sash rollers on CGI Estate Collection sliders. Estate sliders use stainless steel rollers that run on aluminum tracks. Over a decade or so, the roller bearings wear down, the track collects grime, and the sash starts dragging. Orange County’s dry air seems like it would help, but it actually contributes: the dust from our chaparral hills is fine and abrasive. We replace the roller assemblies, clean and re-lube the track, and realign the sash. Smooth operation after that.
- Impact glass stress fractures from Santa Ana wind-blown debris. CGI impact glass is laminated and tough, but a 60 mph gust can fire a roof tile or a piece of hardscape material hard enough to crack the outer pane. The laminate layer holds the glass together, which is exactly what it’s designed to do, but the crack still needs attention. We can often replace just the laminated unit without touching the frame.
- Water intrusion around CGI Clarity retrofit window flanges. Retrofit installations depend on the integrity of the original rough opening and the new flange seal. In 1950s-1970s stucco homes across Fullerton, Orange, and Garden Grove, the original window openings often aren’t square, and the stucco varies in thickness. If the retrofit flange wasn’t properly bedded in sealant, you get leaks that show up as drywall staining below the window. We pull the trim, reseat the flange with the right sealant, and test with water to confirm the fix.
CGI Parts & Our Repair-vs-Replace Approach

CGI OEM parts, including factory glass packs and hardware kits, are available to independent contractors. We order them when the job calls for it: warranty scenarios, color-matching on a newer product line, or when a customer simply wants factory parts. OEM parts come with the manufacturer’s own warranty and exact color and dimension match.
For out-of-warranty CGI products, especially those that are 12 years old or more, the math changes. A premium aftermarket insulated glass unit from a reputable local fabricator often carries a comparable seal warranty and will cost 20-40% less than the CGI factory unit. The visual difference is undetectable. We’ll price both and let you choose. As for repair versus replace, our rule is simple: if the frame is square, structurally sound, and can hold a new sealed unit properly, we repair. If the frame is warped, corroded through, or the sash has twisted, we recommend replacement with a comparable impact-rated product. We won’t talk you into a new window to boost our invoice. Trevor didn’t build his reputation that way.
We stock common CGI hardware locally: roller assemblies, locking handles, casement cranks, and weatherstripping profiles for the Sentinel and Estate lines. That means most hardware repairs are a one-visit job. For glass pack replacements, the unit is fabricated to size and typically installed within five business days. Call (424) 541-1701 for a written quote before any work starts.
Our CGI Service Process – Step by Step
- 1
Inspection and diagnosis. A background-checked, uniformed technician visits your Orange County home, examines the CGI unit in question, and documents exactly what’s wrong. For a fogged Sentinel window, that means confirming seal failure and measuring the existing IGU thickness and glass type. For a sticking Estate slider, we inspect the rollers, track, and frame alignment before making any recommendation.
- 2
Written recommendation. You get a written price before any work starts, not a verbal range. The quote separates parts from labor, and it states whether we’re using OEM or aftermarket parts and why. If replacement is the honest answer, the quote includes the comparable impact-rated product we recommend, with the same written guarantee attached.
- 3
Repair or installation. We schedule a real arrival window and show up in it. The work is done by the same technician who did the diagnosis, in uniform, with the necessary parts on hand. We protect flooring and furniture, and we leave the work area cleaner than we found it.
- 4
Testing and verification. For window service, we operate every sash and lock, check the seal line for any gaps, and confirm drainage pathways are clear. For exterior and roof work, we water-test where applicable and document the finished condition with photos.
- 5
365-Day Done Right Promise. Every job carries our written guarantee. If the repair fails inside the guarantee period, we come back and fix it at no charge. No service call fee, no re-inspection charge, no argument. That’s the Kingswell standard we’ve operated under since 2004.
See the difference
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AfterCGI Products We Service & Install in Orange County
We service the full residential CGI lineup that’s common in Orange County homes. That includes the Sentinel Series impact windows, the Estate Collection windows and doors, Clarity retrofit windows for homes with existing interior trim that the homeowner wants to preserve, and the Targa Series impact windows. We handle casements, single and double hungs, horizontal sliders, picture windows, and hinged doors. Locally, we keep hardware and weatherstripping for the Sentinel and Estate lines on hand. Glass packs and larger components are sourced per job, either OEM from CGI or through our local fabricator network. This means fast turnaround without waiting on a freight shipment from the East Coast.
We Also Service These Brands
CGI is one part of what we do as a General Contractor. Our Orange County customers also ask us to work on kitchens and baths where the cabinetry is KraftMaid, or the countertops are Cambria or Silestone. We install Kohler fixtures regularly. If your home has a mix of brands, which most do, we’re equipped to handle everything in one coordinated project with one written price.
FAQs – CGI Construction Service in Orange County

If your CGI Sentinel windows are still under the manufacturer’s warranty, we use OEM glass packs and hardware whenever the work falls under warranty scope. That preserves the original warranty. For out-of-warranty work, we’ll recommend the most cost-effective correct fix, whether OEM or premium aftermarket. Call (424) 541-1701 and we’ll walk through your specific situation.
Most of the time, we replace just the insulated glass unit, not the frame. A fogged Sentinel window almost always means seal failure in the glass pack, while the aluminum frame is fine. Removing the sash, installing a new OEM or aftermarket IGU, and reassembling runs roughly a third of the cost of a full window replacement. We only recommend a full replacement when the frame itself is warped, corroded, or structurally compromised.
If you’re in Anaheim, Orange, or Fullerton Cgi service areas, you’re roughly 10-15 miles from the coast, and hurricane-force storms aren’t a realistic threat. But Santa Ana winds are. A 60 mph gust in a canyon or on a hillside above the 55 freeway throws landscaping rock and roof tiles hard enough to break standard glass. Impact windows also cut outside noise substantially, which matters near the freeways. For inland Orange County, we often recommend a more economical double-pane replacement and reserve impact-rated glass for homes in wind-exposed locations or higher-end remodels. Like our tech in Laguna Niguel, we’ll be straight with you about what’s worth the cost.
Two causes: worn roller bearings and accumulated grime on the track. Orange County’s fine dust and dry air work into the roller assemblies over time. We replace the rollers, clean the track, and realign the sash. The fix usually takes under an hour per slider and restores the original easy operation.
Yes. That’s the whole point of the Clarity line: the retrofit installation leaves your interior trim, casing, and woodwork untouched. We match the new retrofit unit to your existing stucco exterior opening and install from the outside. Inside, nothing changes. Colors, frame profiles, and grid patterns can be matched to what you already have or updated deliberately if you’re doing a broader refresh.
How much does CGI construction cost in Orange County?
| Service | Price Range |
|---|---|
| Impact Window Installation | $8,000 – $25,000 |
| Window Replacement | $4,500 – $15,000 |
| Roof Replacement | $8,000 – $20,000 |
Those ranges reflect typical Orange County projects. Impact window installation depends on window count, size, and whether we’re doing full-frame or retrofit. Window replacement varies by material, glass package, and labor required to work around existing stucco. Roof replacement ranges with square footage, pitch, and whether we’re doing a tear-off or an overlay. Every estimate is written, itemized, and fixed before work begins. Call (424) 541-1701 for your exact number.
Book Your CGI Service in Orange County, CA
From CGI Sentinel seal failures along the coast to Estate sliders dragging in inland Orange County, we know these products and we know this market. Call (424) 541-1701 or request service online. You’ll speak to a live person, not a voicemail. You’ll get a written price before any work begins, and a 365-day written guarantee with it. That’s how we do business in Orange County.
Written by Trevor Nash, Owner at Penhallow Remodeling Orange County, serving Orange County since 2004.


