







Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why San Diego Homeowners Choose CGI Construction
We provide independent CGI window and door repair, replacement, and installation across San Diego, working on everything from 1980s Estate Series fixed windows in Mission Hills to new Sentinel Series sliders in coastal condos near Point Loma. What separates our CGI work from a general handyman job is simple: our crews know the specific failure modes these products develop in San Diego’s marine and high-UV climate, and we price the fix in writing before any work starts. We’re not an authorized CGI dealer, and we won’t pretend to be one. We’re an independent San Diego Cgi service and remodeling contractor with two decades of hands-on experience keeping CGI windows and doors sealed, square, and sliding smoothly. If you’ve got a CGI unit fogging up, sticking, or leaking after a wet winter, call us at (619) 604-9624 and we’ll tell you exactly what’s wrong and what it costs to make it right.
Why Trust Penhallow Remodeling San Diego for Your CGI Construction?

Our owner, Trevor Nash, started with a framing hammer in a trade program at Los Angeles Trade-Technical College, where the instructors drilled one thing into every student: measure twice, cut once, and never hide a bad joint behind trim. That same habit carries into our CGI service work. We don’t mask a failed seal with a quick bead of caulk and call it fixed. We open the unit, identify why the seal or roller actually failed, and replace the component that caused the problem in the first place.
Every technician who walks into your home is background-checked, uniformed, and trained on CGI product lines specifically, including the Estate Collection, Sentinel Series, Tribute Series, and Elegance Series. We carry a working inventory of common CGI replacement parts such as balance shoes, rollers, weatherstripping, and glazing beads in our San Diego service vehicles, which means many CGI repairs get completed in a single visit. And every job, from a single window reglaze to a full-home impact window replacement, comes with our 365-Day Done Right Promise in writing. If the repair fails inside a year, we return at no charge. That’s not a slogan. That’s the guarantee Trevor signs his name to.
Styles & brands we work with







Common CGI Construction Problems We Fix in San Diego
After close to twenty years of running crews across San Diego, including El Cajon Cgi service work, we’ve learned that CGI products fail in predictable ways in our climate. Here are the five problems we see most often, along with the real reason they happen:
- Fogging and condensation between panes on older CGI Estate Collection units. The Estate line was popular in San Diego tract and hillside homes from the 1980s through the early 2000s. The insulated glass (IG) seals on those units eventually break down from decades of thermal cycling, warm days and cool coastal nights. Once the seal fails, moisture gets trapped between the panes and no amount of wiping fixes it. The fix is an IG unit replacement, not a new window, when the frame is still sound.
- Roller and track wear on large CGI Sentinel Series sliding glass doors. Sentinel sliders are heavy. Over years of use, the nylon rollers flatten, the stainless tracks develop grooves, and the door starts to drag or bind. We see this constantly in San Diego homes where a patio slider is the main access point to a deck or canyon-view patio. Replacing the rollers and adjusting the track usually restores the door to a one-hand glide.
- Powder coat chalking and pitting on CGI aluminum frames near the coast. Within about three miles of the ocean, salt air is relentless. CGI’s aluminum frames are durable, but the powder coat finish can chalk, dull, and eventually pit from constant salt exposure. This is cosmetic in most cases, but if pitting reaches the aluminum underneath, the frame can corrode and compromise the unit’s structural seal. Homes in Point Loma, Ocean Beach, and La Jolla see this faster than inland neighborhoods.
- Leakage around fixed CGI window frames after San Diego’s wet winters. San Diego doesn’t get much rain, but when it comes, it comes in bursts. The exterior sealant around fixed window frames degrades over time, especially on homes that get full western sun exposure. We get waves of calls every December and January from homeowners in Clairemont and Mira Mesa who noticed water staining around the interior casing after the first big storm. The typical culprit is degraded exterior sealant, not failed flashing.
- Hard-to-operate or dropping sashes on CGI double-hung windows. The balance shoes and spiral balances in CGI double-hung windows wear out over time. A window that suddenly slams shut or won’t stay open is almost always a failed balance mechanism. This is a straightforward repair with the correct OEM-spec replacement part, and it’s far cheaper than replacing the whole sash.
CGI Parts & Our Repair-vs-Replace Approach

We prefer genuine CGI replacement parts, and we’ll tell you that straight. Balance shoes, rollers, weatherstripping, and glazing beads that came from the CGI factory are built to the original tolerances, so they fit right and preserve whatever manufacturer warranty remains on the unit. For components that CGI no longer produces, which happens on some of the older Estate and Tribute product lines, we source high-quality aftermarket equivalents from established millwork suppliers in the San Diego area. We never install a part that we wouldn’t put in our own house.
When it comes to repair versus replacement, we’re honest about the math. A single failed IG seal on a well-maintained frame is almost always worth repairing. But if multiple panes have failed, or the aluminum frame shows corrosion that’s eating into the structural channel, replacement is the smarter long-term spend. We’ll walk you through the cost difference and let you decide. Call (619) 604-9624 if you want an exact price on your situation.
Our CGI Service Process – Step by Step
We keep the process simple because we’ve learned that San Diego homeowners appreciate clarity more than ceremony. Here’s what happens when you call us about a CGI window or door issue:
- 1
Diagnosis. We inspect the unit in place, checking the glass seal, hardware, frame condition, and surrounding flashing. We’ll tell you exactly what’s failed and why, in plain English. If you don’t know what a balance shoe is, we’ll explain it.
- 2
Written price. Before any work begins, you get a written number. Not a range, not a verbal estimate. The price you see on day one is the price on the invoice. If we find something else wrong once we open the unit, we stop and call you before spending another dollar.
- 3
Repair or replacement. We use genuine CGI parts wherever they’re available, and we protect your home while we work: drop cloths, shoe covers, and a clean work area. For window replacements, we remove the old unit, inspect the rough opening, re-flash with stainless steel Z-bar where needed, and seal with high-grade polyurethane.
- 4
Testing. We operate the window or door through its full range of motion, check the seal, and verify drainage. In San Diego’s climate, we also check for UV degradation on any new exterior sealant and use products rated for coastal exposure when the home is within the marine layer zone.
- 5
Warranty. Every repair and installation comes with our 365-Day Done Right Promise in writing. If something fails within the year, we come back and fix it. No service call fee, no re-inspection charge.
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AfterCGI Products We Service & Install in San Diego
Our Cgi in Chula Vista and San Diego crews service and install across the major CGI product families, including the Estate Collection, Sentinel Series, Tribute Series, and Elegance Series. That covers fixed windows, double-hung windows, casement windows, sliding glass doors, and impact-rated units. We stock common CGI replacement parts including rollers, balance shoes, weatherstripping, and glazing beads locally, which speeds up most single-unit repairs. On larger jobs, such as a full-home impact window replacement, we coordinate material delivery directly with our San Diego suppliers so the project timeline stays predictable.
We Also Service These Brands
While this page is about CGI, we’re not a single-brand shop. Our San Diego crews regularly work with KraftMaid cabinetry, Cambria and Silestone countertops, and Kohler fixtures on larger remodeling projects. If your CGI window replacement is part of a bigger kitchen or bath renovation, we can handle the whole job as your General Contractor, not just the windows.
FAQs – CGI Construction Service in San Diego

Yes, it’s one of the most common CGI repair calls we get in San Diego. The nylon rollers on Estate and Sentinel sliding doors flatten over time, and the stainless track develops wear grooves. A door that drags or binds usually needs new rollers and a track adjustment, which runs a few hundred dollars. A door that’s completely seized may need track replacement. Call (619) 604-9624 and we’ll diagnose it over the phone, then give you a written price after we see it in person.
We use genuine CGI parts whenever they’re available, which covers most current production windows and doors. For discontinued components on older units, we source high-quality aftermarket parts from established San Diego millwork suppliers. We’ll always tell you which you’re getting and why, before the work starts.
Yes, in most cases we can. CGI’s bronze finish is a powder coat with a specific tone, and we’ve matched it successfully on replacement units and frame touch-ups across San Diego. On a recent Mission Hills project, we replaced two failed Estate fixed windows with new impact units in the same bronze finish and reinstalled the original interior casing. The match was seamless enough that the homeowner’s neighbor asked when we’d be coming to do their house.
This is a smart question to ask before the roofer shows up. CGI skylights need to be properly re-flashed and sealed when the roofing material is replaced, or you’ll get leaks at the curb the first wet winter. We coordinate with your roofing contractor to pull the skylight, inspect the frame and glass seal, re-flash it correctly, and reset the unit. Roof repair and skylight service in San Diego typically runs $470 to $2,125 depending on what’s needed. Call (619) 604-9624 and we’ll give you a written price for the skylight scope.
Yes, and that’s usually the right call. Condensation between the panes means the insulated glass seal has failed. If your frame is in good shape, we can install a new IG unit without replacing the whole window, which saves you hundreds per opening. If multiple panes have failed or the frame shows corrosion, we’ll tell you honestly that replacement makes more sense. Estimates are free, and the price you get is in writing.
Here are the price ranges we work with for San Diego homes:
| Service | Typical San Diego Price Range |
|---|---|
| Window Replacement | $5,310 – $17,700 |
| Impact Window Installation | $9,440 – $29,500 |
| Roof Repair (including skylight re-flashing) | $470 – $2,125 |
Your exact price depends on the number of openings, the CGI series you’re matching, whether you need impact-rated glass, and the condition of the existing frames. Call (619) 604-9624 for an exact quote on your home. Estimates are free, and the number we give you is the number on the invoice.
Book Your CGI Service in San Diego, CA
If your CGI windows or doors need attention, call us at (619) 604-9624. We’ll schedule a time that works for you, show up in the window we gave, inspect the unit, and hand you a written price. Tell me what you need, I’ll tell you what it costs, and we’ll go from there. That’s how Trevor runs every job in San Diego, and it’s how we’ve kept homeowners coming back for two decades.
Written by Trevor Nash, Owner at Penhallow Remodeling San Diego, serving San Diego neighborhoods from Point Loma to Rancho Santa Fe since 2004.


