Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
Why Houston Homeowners Choose CGI Construction
Penhallow Remodeling Houston is an independent provider of CGI repair in Houston, specializing in the Sentinel Series, Estate Collection, and Classic Series impact windows and doors. We’re not authorized by CGI, and that’s exactly why homeowners call us: our recommendations come from what we see in the field on Houston homes, not from a manufacturer’s playbook. If you have a CGI window that’s fogged, a sliding door that sticks, or a frame showing corrosion, call (254) 527-5340 for a straight answer and a written price before any work starts.
Houston’s heat and humidity do things to window glass, aluminum frames, and door hardware that few other climates can match. We know because we’ve opened up hundreds of CGI units in neighborhoods from Meyerland to Kingwood, and we’ve learned exactly where these products succeed and where they eventually need help. That’s the knowledge you’re paying for when you call us.
Trevor Nash leads our Houston service team, and he’ll tell you the same thing he tells every homeowner: give us the straight story on what you need, and we’ll give you the straight number on what it costs.
Why Trust Penhallow Remodeling Houston for Your CGI Construction?
Our crews have worked on hundreds of homes in Katy and across the Houston area originally built or remodeled with CGI windows and doors, giving us firsthand knowledge of how their aluminum and vinyl product lines perform in Gulf Coast heat, humidity, and storm exposure. We are an independent service provider, not authorized by CGI, so our recommendations are based solely on what we see in the field, not on a manufacturer’s playbook.
Trevor grew up in the San Fernando Valley outside Los Angeles, where he first learned that a straight wall is harder to build than it looks. He studied construction technology at Los Angeles Trade-Technical College before spending years swinging a hammer on everything from tract homes to full gut renovations. He and his crew have been serving Houston long enough to know the soil conditions near the Meyerland area and why they matter before you pour a single footing. That same hands-on, explain-everything approach carries into every CGI window and door job we take on.
Every job gets a written price before work starts. Every job includes our 365-Day Done Right Promise in writing: if the work fails inside the guarantee period, we come back and fix it at no charge. Our technicians are background-checked and arrive in uniform, so you know exactly who’s walking through your door. And a live person answers our phone 24/7, not a voicemail maze.
Styles & brands we work with
Common CGI Construction Problems We Fix in Houston
- Fogging between glass panes in CGI Sentinel Series fixed windows. This is the most common call we get. Houston’s prolonged heat and UV exposure break down the insulated glass seals over time, letting moisture creep between the panes. You end up with a window that looks cloudy from the outside and blocks your view from the inside. The fix is an insulated glass unit replacement, and we match the low-E coating and tint to the original so the new glass blends with the rest of the house.
- Corrosion at the bottom rail weep holes on aluminum CGI frames. In coastal-adjacent Houston neighborhoods with higher salt air, aluminum frames take a beating. The weep holes, which are designed to drain water away from the sill, start pitting and corroding first. Left unchecked, that corrosion spreads to the frame itself and compromises the seal. We clean, treat, and reseal when the frame is still sound, and we tell you honestly when it’s too far gone and a new impact-rated unit makes more sense.
- Roller and track wear on CGI Estate Collection sliding glass doors. Sliding doors that start dragging or jamming usually have worn rollers or a track that’s collected years of Gulf Coast grit. The problem is rarely the door slab itself. We remove the panel, inspect the rollers and track, and replace the worn hardware with components that match the original profile. The door glides again without forcing it.
- Deteriorated glazing gaskets and weatherstripping around operable sashes. Houston’s humidity eats rubber and vinyl seals. When the gaskets around a casement or awning window harden and crack, air and water start sneaking past the sash. You’ll feel a draft on a humid afternoon or see water beading along the inside track during a heavy rain. We replace the gaskets and weatherstripping with materials rated for our heat and moisture, restoring the seal without replacing the entire window.
- Hardware failures on discontinued CGI Classic Series casement windows. These older units are solid windows, but the crank mechanisms and locking hardware wear out after years of use. Finding the right replacement hardware isn’t a big-box store job. We source components that fit the original profile, whether that’s genuine CGI parts or high-grade aftermarket equivalents when the original has been discontinued.
CGI Parts & Our Repair-vs-Replace Approach
We use genuine CGI replacement parts whenever they’re available and cost-effective, but for discontinued trim, clips, and hardware we source high-grade aftermarket components that match the original profile. That matters because a cheap universal part from a hardware store often leaves gaps, binds, or fails within a season.
We’re honest about repair versus replacement. If the frame is sound and only glass or hardware is failing, we repair. If the frame is pitting, the thermal break is compromised, or the sash is racked, we suggest a new impact-rated unit instead of throwing good money at a frame that’s already losing its structural integrity. Our tech was called to a home in The Woodlands, TX area after a homeowner noticed persistent fogging in two CGI Sentinel Series fixed windows. We removed the sashes, confirmed failed insulated glass seals, and replaced the insulated glass units with upgraded low-E glass to match the original tint. Two weeks later the same client had us back to inspect all remaining CGI windows before hurricane season, and we replaced worn weatherstripping on three Estate Collection casements. That’s how the repair-versus-replace conversation should work, a plain assessment of what’s worth fixing and what’s not.
Call (254) 527-5340 if you’re not sure which side of that line your CGI product falls on. We’ll tell you straight.
Our CGI Service Process – Step by Step
- 1
Diagnosis. We inspect your CGI windows or doors on site. We check the glass seals, frame condition, weep holes, hardware, and weatherstripping, and we compare what we find to the failure patterns we’ve documented across Houston homes over the years. You get a clear explanation of what’s wrong and a written price for the fix before anything gets touched.
- 2
Repair or installation. We remove the affected sash or panel, replace the failed component (insulated glass, roller, gasket, hardware, or full frame), and reassemble everything to the manufacturer’s torque and alignment specs. We work clean, protecting the surrounding trim and flooring as we go.
- 3
Testing. Every repaired or replaced CGI unit gets tested for smooth operation, proper drainage through the weep system, a tight air seal, and no visible gaps or racking. We open, close, lock, and cycle each sash or panel the way you’ll use it daily.
- 4
Warranty and follow-up. You get a written guarantee on every CGI job, backed by our 365-Day Done Right Promise. If the repair fails inside the guarantee period, we come back and fix it at no charge, no service call, no re-inspection fee. The price on day one is the price on the invoice.
See the difference
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AfterCGI Products We Service & Install in Houston
We service and install the CGI product lines most common across Houston homes: the Sentinel Series impact windows, Estate Collection impact windows and hinged patio doors, and Classic Series impact windows. These cover fixed, casement, awning, and sliding configurations, plus the hinged patio doors that show up on a lot of 1990s and 2000s Houston builds.
We stock locally the fast-moving components for these lines, insulated glass units, rollers, gaskets, weatherstripping, crank mechanisms, and locking hardware, so we can turn around most repairs without waiting weeks for a factory shipment. When a part falls outside local stock, we know which suppliers get it to Houston fastest.
We Also Service These Brands
Penhallow Remodeling Houston is a General Contractor that works across the building envelope. Beyond CGI windows and doors, we install KraftMaid cabinetry, Cambria and Silestone countertops, and Kohler fixtures in kitchens and bathrooms throughout the Houston area. That cross-brand experience means we understand how your CGI products integrate with the rest of your home, not just how they work in isolation.
FAQs – CGI Construction Service in Houston
Can you repair a CGI Sentinel Series impact window that has lost its seal and is fogged? Yes, in most cases we can replace the insulated glass unit rather than the entire window. We match the low-E coating and tint to the original glass, confirm the frame is still sound, and reseal everything to factory tolerance. The repair typically runs a fraction of what a new impact window costs. Call (254) 527-5340 and describe what you’re seeing, and we’ll give you a written quote.
Do CGI Estate Collection sliding doors use a standard roller that any hardware store part can replace? No, and that’s the problem with off-the-shelf rollers. Estate Collection sliding doors use a specific roller profile, and a generic universal roller often sits too high or too low in the track, binds, or wears out within a season. We source rollers that match the original profile exactly, which keeps the door gliding smoothly and protects the track from unnecessary wear.
My CGI window frame has white chalky residue on the aluminum. Is that a warranty issue? The chalky residue is aluminum oxidation, a form of corrosion common on aluminum frames exposed to Houston’s humidity and, in coastal-adjacent neighborhoods, salt air. It’s rarely covered under warranty because it’s an environmental wear issue, not a manufacturing defect. What matters is how deep the corrosion goes. If it’s surface-level, we clean, treat, and reseal the frame. If it’s pitting and spreading, the frame’s structural integrity is compromised, and we’ll recommend a new impact-rated unit.
Can you source CGI replacement hardware for a discontinued Classic Series casement window? Yes. For discontinued Classic Series hardware, we go to our supplier network and source either remaining genuine CGI stock or high-grade aftermarket components that match the original crank mechanism or locking assembly. The key is matching the mounting points and the operating geometry exactly, which is what separates a proper repair from a workaround. Call (254) 527-5340 with your window’s location and we’ll identify the hardware before we quote.
Is it worth repairing a CGI impact window with a broken laminated glass pane, or should I replace the whole sash? That depends on the condition of the frame and the sash. If the frame is square and sound, replacing the laminated insulated glass unit makes sense and costs less than a full window replacement. If the frame has corrosion, the thermal break is compromised, or the sash is racked, you’re better off replacing the whole unit with a new impact-rated window. We’ll tell you which route makes sense after we inspect it, not before.
How much does CGI construction cost in Houston? Here’s what we see across Houston for the services tied to CGI work:
| Service | Typical Houston Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Repair | $400 – $1,800 |
These ranges reflect the scope of the job, the number of units, the CGI product line involved, and whether we’re repairing components or replacing full frames. Call (254) 527-5340 for an exact quote based on what you have and what’s actually wrong. Estimates are always free.
Book Your CGI Service in Houston, TX
If your CGI windows or doors are fogged, sticking, corroding, or leaking, don’t wait for the next heavy rain to find out the seal is gone. Call (254) 527-5340 and we’ll schedule a service visit at a time that fits your schedule. You’ll get a written diagnosis, a written price, and our 365-Day Done Right Promise in writing before any work starts.
Written by Trevor Nash, Owner at Penhallow Remodeling Houston, serving Houston since bringing the Kingswell standard to Texas.
