Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why West Covina Homeowners Choose CGI Construction
Mason Remodeling Co West Covina provides independent CGI service in West Covina for window and roofing construction, repair, and installation, from mid-century tract homes near the hillsides to newer builds south of the freeway. We’re not a CGI dealer and we don’t work for the manufacturer, which means our crews assess what’s actually failing and tell you plainly whether a repair makes sense or a replacement is overdue. If you need CGI impact windows replaced, a roof redone, or a specific failure diagnosed, call (707) 760-7579 and we’ll give you a straight answer.
CGI’s Sentinel, Estate, and Targa lines are serious products built for hurricane zones. In West Covina, the challenge homeowners face is different: decades of hot, dry summers, Santa Ana wind bursts, and expansive clay soil that shifts under slab foundations and stresses window frames over time. Our techs understand how CGI’s aluminum and impact-rated glazing behaves in exactly these conditions, because we’ve been pulling failed units out of West Covina homes for years.
We are an independent CGI service provider. We are not affiliated with or authorized by CGI, and we say that up front because it matters. It means our recommendation to repair or replace is driven by what we find on your house, not by a corporate parts program.
- Independent CGI repair and replacement for Sentinel, Estate, Targa, and commercial storefront lines
- Written price before work starts on every job, no exceptions
- Crews verified by name and photo before arrival, under the Threshold Standard
- Background-checked, uniformed technicians who show photo ID at the door
- Live person answers the phone 24 hours a day, 7 days a week, including holidays
Why Trust Mason Remodeling Co West Covina for Your CGI Construction?
CGI windows and roofing are not a side project for us. Our crews know the Sentinel horizontal sliders, the Estate Series casements and picture windows, and the Targa impact line well enough to spot a failing seal before you see condensation on the glass. That knowledge came from doing the work, not reading spec sheets. On a 1990s ranch near Shadow Oak Park, our techs replaced four CGI Sentinel horizontal sliders that had persistent fogging and worn locking points. We pulled the old frames intact, installed new units with upgraded SS304 hinges and dual durometer weatherstripping, then hauled away the debris the same day. You should know what you’re getting before we ever pick up a tool.
Isaac Pruett, owner of Mason Remodeling Co West Covina and a General Contractor, grew up in Los Angeles and came up through the construction technology program at Los Angeles Trade-Technical College. He has been swinging hammers across the San Gabriel Valley for decades, including years of work in West Covina neighborhoods near Eastland Center where older homes needed everything from foundation attention to full window and roof overhauls. His crew works the way he does: show up when we said we would, explain what we found in plain language, and keep the scope honest from start to finish.
Every Mason Remodeling Co West Covina crew member is identity-verified and background-checked before they ever step on your property. You get the technician’s name and photo before the visit, and they arrive in a clean marked uniform with a photo ID badge at the door. We call this the Threshold Standard, and it’s not optional.
Styles & brands we work with
Common CGI Construction Problems We Fix in West Covina
- Fogging between panes on CGI Sentinel windows. This is a failed insulated glass (IG) seal. The argon or krypton gas between the panes escapes, moisture gets drawn in, and you end up with a foggy window that won’t clear. West Covina’s temperature swings between hot days and cool nights accelerate the seal fatigue on older Sentinels, especially on west-facing walls that get full afternoon sun. Fixing it means either replacing the IG unit if the frame is sound, or going to a full unit replacement if the frame shows corrosion.
- Corrosion at frame corners on CGI Estate Series windows. The Estate line uses heavier aluminum extrusions, and in West Covina’s hillside microclimates, morning condensation can sit at frame corners and slowly eat through the finish and into the aluminum. We see this most often on north-facing elevations that stay damp. If caught early, we can clean and reseal the corner. If the corrosion has penetrated, replacement is the honest answer.
- Sticking sashes on CGI Targa impact windows. Targa sliders and single-hungs accumulate fine dust and grit in the tracks, especially during Santa Ana wind events. That dust mixes with track lubricant and turns into a paste that binds the sash. We clean the track, replace rollers or balance springs as needed, and apply the right lubricant for impact-rated hardware. Skipping this maintenance leads to forced sashes and bent locking points.
- Leaking at mullion joints on CGI storefront systems. Commercial storefront assemblies in West Covina, particularly on older retail strips near Eastland Center and along the boulevard corridors, develop leaks where window mullions meet after years of minor seismic movement. The joint sealant fails and water gets behind the frame. We pull the trim, remove the old sealant, inspect the mullion for alignment, and re-seal with a commercial-grade product matched to the original.
- Worn locking points and hardware on CGI horizontal sliders. Locking points wear out over hundreds of open-close cycles, and worn locks on an impact-rated window are a security and performance issue. We replace the locking assemblies with OEM-style hardware so the window keeps its impact rating and actually locks the way it should.
CGI Parts & Our Repair-vs-Replace Approach
We stock common CGI-specific components locally: replacement rollers, balance springs, corner gaskets, and locking point assemblies. For weatherstripping and hardware, we source OEM-style components that preserve impact ratings. We do not cut corners with universal parts that compromise how a CGI window performs. When an IG unit fails but the frame is clean, we replace the glass unit. When a frame is older than about 15 years and shows corrosion or the glazing is obsolete, we tell you straight: replacement is the better investment. Putting new glass into a dying frame doesn’t serve anyone.
Our repair-versus-replace decision comes down to frame condition, remaining serviceable life, and whether the current unit meets modern standards. If a repair makes sense, we do it. If replacement is what your house actually needs, we quote it honestly and explain why. Call (707) 760-7579 if you want a straight read on a CGI unit that’s giving you trouble.
Our CGI Service Process – Step by Step
- 1
Diagnosis. We inspect the unit or roofline, identify the failure mode, and show you what we found in plain terms. For a foggy Sentinel, that means confirming the IG seal is blown. For a roof, that means identifying the exact leak path or wear point.
- 2
Written scope and price. You get a written line-item price before any work begins. That includes labor, materials, and any disposal. The number on the written estimate is the number on the final bill, unless we find something structurally unsafe that we have to tell you about before proceeding.
- 3
Repair or install. Our verified crew does the work using the correct parts and tools for the specific CGI product. For window replacement, we pull the old frame carefully to minimize damage to surrounding stucco or drywall. For roofing, we protect the existing roof where work is isolated.
- 4
Test and verify. We run every window through full open-close cycles, check weatherstripping seals, and confirm locking points work. On roofing, we water-test repaired areas and inspect seams.
- 5
Warranty and follow-up. Every completed project carries our 365-Day Done Right Promise. If the work is not right within a year of completion, we make it right at no cost to you. That promise is written, plain, and applies to CGI work just like every other project we take on.
See the difference
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AfterCGI Products We Service & Install in West Covina
We work across the core CGI residential and commercial lines, including CGI in San Dimas and surrounding areas. CGI Sentinel Impact Windows (horizontal sliders, single-hungs, fixed lites, and casements), CGI Estate Collection Windows (heavier extruded aluminum frames, picture windows, and specialty shapes), CGI Targa Series Impact Windows (sliders and multi-panel doors), and CGI Commercial Storefront Systems for retail and mixed-use properties. The work spans impact window installation, full window replacement, and roof replacement or repair where CGI-rated products are installed. Rollers, balance springs, and corner gaskets for these lines are stocked locally in our West Covina operation.
We Also Service These Brands
CGI is not the only line we carry parts for, and we also offer CGI service in Pomona. Our West Covina crews regularly install and service cabinetry from KraftMaid, surfaces from Cambria and Silestone, and fixtures from Kohler. If your project involves multiple brands across a kitchen, bath, or roof, you don’t have to juggle different contractors.
FAQs – CGI Construction Service in West Covina
Is Mason Remodeling Co West Covina authorized by CGI?
No. We are an independent CGI service provider, not a CGI dealer or an authorized warranty station. That independence is what lets us tell you honestly whether a repair is worth doing or whether replacement is the better call.
Can you replace just the glass in my CGI Sentinel window, or do I need a full unit replacement?
It depends on the frame. If the aluminum frame is structurally sound and the glazing pocket is intact, we can replace the insulated glass unit without pulling the frame. If there’s frame corrosion, a bent extrusion, or the unit is older than about 15 years, we typically recommend full replacement. Call (707) 760-7579 and we’ll assess it in person and give you a written answer.
How do I know if my CGI Estate Series window qualifies for a repair under warranty?
That’s between you and the manufacturer or the original installer. We don’t process CGI warranty claims. What we can do is inspect the window, document the failure, and give you a written diagnosis you can use when you talk to whoever holds the warranty. We’ll also quote a repair or replacement price so you know your options either way.
Why is there condensation between the panes of my CGI impact window?
Condensation between the panes means the insulated glass seal has failed. The desiccant inside the spacer is saturated, and the air or gas between the panes is now carrying moisture. That’s a physical seal failure, not a cleaning issue. On CGI Sentinel units this is one of the most common failures we see in West Covina, especially on sun-blasted western exposures. Replacement is the long-term fix.
CGI windows are rated for hurricanes, but can they handle West Covina’s hot, dry summers?
They can, but the heat exposes a different failure mode than the coastal corrosion CGI products are built to resist. The IG seals on older units dry out and crack faster in sustained high heat, and that’s the source of most fogging we see. The frames themselves hold up fine; the seals are the first component to go. If you’re seeing early fogging, call (707) 760-7579 for a diagnosis before the failure spreads.
Can you install a CGI skylight or roof window without disturbing my existing tile roof?
We can, in most cases. Cutting a new roof opening into an existing tile roof requires careful flashing integration and a plan for handling the tiles we remove. The work is disruptive to that section of the roof, but we protect the surrounding area, re-bed displaced tiles, and leave the roof watertight. The job takes longer than a flat-roof skylight, so we walk you through the exact process and timeline before we write the price.
How much does CGI construction cost in West Covina?
Here are the market-calibrated ranges for the CGI work we do in West Covina:
| Service | Price Range |
|---|---|
| Impact Window Installation | $8,000 – $25,000 |
| Window Replacement | $4,500 – $15,000 |
| Roof Replacement | $8,000 – $20,000 |
These ranges reflect typical West Covina projects. The final number depends on how many openings you’re doing, the CGI product line, access conditions on a hillside lot, and whether we’re doing a clean replacement or dealing with rot or structural issues. Call (707) 760-7579 for an exact quote, estimates are free.
Book Your CGI Service in West Covina, CA
If you have a CGI window that’s fogging, a roof that’s leaking, or an installation you’ve been putting off, call (707) 760-7579. A live person answers, day or night, and we’ll schedule a free estimate. You’ll get a written price before any work starts, and every completed job carries the 365-Day Done Right Promise.
Written by Isaac Pruett, Owner at Mason Remodeling Co West Covina, serving West Covina since 2004.
