Kitchen remodeling
Bathroom remodeling
Home additions & ADU
Roofing
Windows & doors
Driveway & pavers
FenceFree written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Construction in Pomona, CA
We’re Garden Grove Contractors, and we provide independent CGI service in La Verne, Pomona, and surrounding areas - from the Craftsman bungalows in Lincoln Park to the stucco tracts off the 60. We’re not a CGI dealer and not manufacturer-affiliated. What we are is a general contractor crew that has pulled, reframed, and reinstalled enough CGI windows and patio products in this city to know exactly how they behave in 95-degree heat and Santa Ana wind. Need CGI windows replaced, a sticky slider fixed, or an aluminum patio cover that stopped rattling? Call (877) 373-9230 for a free estimate.

Why Pomona Residents Choose Us for CGI Service
CGI products show up all over Pomona because they were a go-to line for SoCal tract builders and retrofit contractors through the 70s, 80s, and 90s. That means we see a lot of them, and we’ve learned their quirks: which series has roller issues, which window film peels first, which patio cover fasteners back out in wind. We source CGI expertise from real job experience, not a training manual.
Noel Cardenas, our owner, grew up in Garden Grove and learned construction through Santiago Canyon College’s trades program before spending years on residential and commercial builds across the greater LA basin. He’s the one who insists we never just swap a part and walk away. If a CGI window is failing because the original opening has no header, we fix the opening. If a patio cover is rattling because the fasteners are wrong for the beam, we replace the fasteners. That’s the difference between a parts-swapper and a contractor who owns the outcome. We also happen to work across the full envelope, kitchen to roofline, so we see how your CGI windows interact with your siding, your roof, and your walls.
When you call us for CGI service in Claremont, Pomona, and nearby cities, you get the same crew that handles full renovations in the area. We understand plaster-and-lath walls. We know what 1960s stucco hides. We’re local to the work, not a phone number that dispatches from three counties away.
Styles & brands we work with
- Kitchen remodeling
- Bathroom remodeling
- Home additions & ADU
- Roofing
- Windows & doors
- Driveway & pavers
- Fence
Common CGI Construction Problems We Solve in Pomona
These are the failures we actually see, not the ones in a warranty brochure.
- Warped or sticking vinyl windows. CGI Select Series vinyl frames can soften and swell when Pomona pushes past 100°F, particularly on south- and west-facing walls with no shade. We see it most in the older bungalow neighborhoods where existing window openings are undersized and the frame has nowhere to move. Sometimes a simple track cleaning and adjustment solves it. Sometimes the frame is gone and it’s a replacement.
- Sliding glass door rollers that bind or grind. CGI 6000 Series sliders in 1960s tract homes often sit in original aluminum tracks that have collected decades of grit. The rollers wear flat, the door tilts, the lock stops lining up. We replace the rollers, clean and true the track, and adjust the door so it actually glides. If the track is too far gone, we’ll tell you before you spend money on a repair that won’t hold.
- Peeling or bubbled Solar-X window film. After years of intense inland UV, the Solar-X film on older CGI windows starts to bubble and peel. It looks bad and it stops cutting heat. We remove the old film, clean the glass properly, and either re-film or upgrade the window depending on what makes sense for your budget and exposure.
- Rattling or leaking aluminum patio covers. Santa Ana events in Pomona work fasteners loose on CGI aluminum patio covers. Panels rattle, seams open, and the next winter rain finds its way in. We re-secure with the right fasteners, re-seal the seams, and check the pitch so water actually leaves the cover instead of pooling at the house.
- Failed window flashing and water intrusion. In older Pomona homes, original CGI retrofits were often installed without proper flashing or with the wrong sealant against plaster returns. Water follows, and by the time you see the stain, the sill or the framing behind it has started to go. We pull the window, repair what’s rotted, and reset it with correct flashing and sealant.
CGI Service in Pomona: What Local Conditions Mean for Your Project
Here’s a fact that shapes CGI work in Pomona more than most people realize. In the older blocks near Lincoln Park and the Pomona Arts Colony, it’s common to find foundation stem walls of original 1920s concrete with no rebar and cripple walls that have never been bolted. Any remodel that touches the sill plate triggers a mandatory seismic retrofit under current California code. That surprises out-of-town contractors who quote a simple window swap. It doesn’t surprise us, because we’ve done it enough. When we replace CGI windows in those homes, the conversation often starts with a window quote and ends with a bar, brace, and anchor retrofit that brings the whole wall into compliance. It’s not scope creep. It’s what the code has required for years, and any honest contractor doing work in Pomona’s older neighborhoods should tell you about it before they write the estimate. If they don’t mention it, they either don’t know the local housing stock or they’re hoping you won’t notice until the inspector shows up.
We know, because on a 1923 Craftsman in Lincoln Park we replaced a set of failed CGI Select Series vinyl windows that had warped and were sticking shut. The original openings had no structural header at all, so we reframed each one with proper jack studs and a header, installed the new CGI windows with flashing, sealed the plaster returns, and addressed the seismic bolting while the wall was open. The homeowner now has smooth-operating windows, a tighter envelope, and a house that won’t come off its foundation in an earthquake. That project is the difference between a window installer and a contractor. We’re the latter.
CGI Models & Products We Service in Pomona
We work on the full range of CGI products commonly found in Pomona and Montclair homes: the Select Series vinyl windows, the 6000 Series sliding glass doors, Solar-X window film, and CGI aluminum patio covers. When parts are needed, we source OEM CGI replacement components when they’re available and cost-effective. For older lines where OEM parts are discontinued or backordered for months, we use quality aftermarket equivalents that meet or exceed original specs, and we tell you exactly what we’re using and why. We stock common rollers, fasteners, flashing, and sealant locally so most Pomona service calls don’t wait on a parts shipment from out of state. And we’ll always give you an honest repair-vs-replace assessment. Sometimes a roller swap is all you need. Sometimes the smarter move is a modern window or door that actually meets today’s energy and impact standards.
See the difference
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AfterCGI Service Pricing in Pomona
Here are the ranges we typically quote for CGI-related work in Pomona. The spread depends on the age of the home, the condition of the existing openings, and whether we’re doing a straightforward swap or reframing around plaster-and-lath walls.

| Service | Typical Pomona Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Roof Repair | $400 – $1,800 |
The free estimate we give you is a written line-item quote. No vague allowances, no change orders unless you change the scope yourself. Call (877) 373-9230 to schedule one. We’ll walk the property with you, look at the actual openings, and tell you what it’ll take.
Serving Pomona, CA - Our Local Coverage Area
We serve Pomona and nearby communities. Also see Los Serranos CGI service. Use the map below to see the area we cover. If you’re nearby, we can almost certainly help.
FAQs – CGI Construction in Pomona
Do you install CGI windows in older Pomona homes with plaster walls? Yes, and we do it the way those houses require: we cut back the plaster returns, inspect the framing, add a structural header if the original opening has none, and set the new window with proper flashing against the plaster. The wall then gets sealed and painted to match. Call (877) 373-9230 for an exact quote on your specific openings.
Why do my CGI vinyl windows stick in the summer? Vinyl expands in high heat, and in Pomona’s 95 to 105-degree inland summers, south- and west-facing CGI Select Series frames can warp enough to bind against the track or the sash. It’s a material response to heat, not a defect in your specific window. In some cases we can adjust or shave the track; in others the frame is permanently distorted and replacement is the honest fix.
Can you repair a cracked CGI aluminum patio cover panel? We can patch or replace a single panel, but first we check the reason it cracked. In Pomona, loose fasteners from Santa Ana wind events let panels flex until the metal fatigues. If we just patch the crack without re-securing the panel, you’ll be calling us again next year. We fix the panel and the fastener problem so the repair holds.
Do you offer impact-rated CGI windows for Pomona homes? Yes. Impact-rated windows are not required by code for most Pomona properties, but they make sense for homeowners who want extra protection against wind-blown debris during Santa Ana events, reduced outside noise, and a tighter energy envelope. We install impact-rated CGI windows and can help you decide whether the cost difference is justified for your specific exposure.
What’s the typical lifespan of CGI windows in Pomona’s climate? Expect 20 to 30 years from vinyl frames in Pomona’s inland heat, but the hardware, seals, and Solar-X film typically fail sooner. We see 10 to 15 years as the practical service life for rollers, balances, and film in full sun exposure on south-facing walls. If your windows are 20 years old and fighting you, a service call costs less than a full replacement. Call (877) 373-9230 and we’ll give you an honest read on what you have left.
Service Areas Near Pomona
We work throughout Pomona and the surrounding communities, including Corona, Garden Grove, Midway City, Stanton, and Westminster. If you’re in one of those areas and need CGI service, we’ll schedule the same local crew. We also cover CGI work further south in Ladera Ranch and east through CGI service in El Cerrito Corona. Our full coverage map is on the Pomona service area page.
Book Your CGI Service in Pomona Today
If your CGI windows are sticking, your slider’s grinding, or your patio cover rattles every time the wind picks up, call (877) 373-9230. We’ll put you on the schedule for a free estimate, walk the property with you, and tell you what it’ll take to make it right.
Written by Noel Cardenas, Owner at Garden Grove Contractors, serving Pomona and surrounding communities. The material you pick today is the problem you solve, or the one you live with, ten years from now.