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CGI Construction in Redwood Shores, CA | Gold Star Contractors
CGI windows and doors fail differently in Redwood Shores than anywhere else on the Peninsula, and that’s where most contractors get it wrong. We provide independent CGI service across Redwood Shores, from full window replacements to roof repair on the same stucco-and-slab homes we’ve worked in for years, unlike CGI in San Mateo. The one thing that makes our work here different? We build every CGI install around the bay mud, shallow groundwater, and salt fog that define this city. Not affiliated with or authorized by CGI, and we don’t pretend to be. Call (833) 382-8544 for a free estimate on your CGI project.

Why Redwood Shores Residents Choose Us for CGI Service
CGI makes a genuinely good window, but the product is only half the equation here. The other half is how it gets installed, and in Redwood Shores that means understanding what happens when engineered fill settles under a slab-on-grade home. Our crew has spent years repairing and replacing CGI units in 1980s and 1990s stucco homes throughout the 94065 zip, so we know which failures are the window’s fault and which ones trace back to the ground it sits on. Noel Carranza, our owner, came up through construction technology at Fullerton College and spent his twenties doing concrete work, finish carpentry, and everything in between before building Gold Star Contractors. That background matters when a CGI window is racked out of square because the fill beneath the wall has shifted. We diagnose the whole opening, not just the glass. You can learn more about our CGI sales & service approach if you want the full picture.
Styles & brands we work with







Common CGI Construction Problems We Solve in Redwood Shores
- Salt-pitted hardware and corroded fasteners. The marine layer off the bay hangs over Redwood Shores year-round, and the salt content in that air is relentless. We regularly replace CGI window locks, hinges, and corner hardware that have corroded into uselessness, then upgrade the fasteners to materials that hold up better in this environment.
- Fogged glazing and failed seals. The original CGI units installed when these homes were built are now 30 to 40 years old. The frames are often still sound, but the seals between panes have given up. We diagnose whether a sash replacement makes sense or if the whole unit has to go.
- Racked windows and patio doors that stick. Settlement on engineered fill is a fact of life in Redwood Shores, not a defect in the window. When the slab shifts, CGI frames get pulled out of square and the sash binds or the sill leaks. We fix the opening first, then the window.
- Moisture staining at bay-facing sills. Condensation from marine-layer fog attacks bay-facing walls here like nowhere else. We see CGI frames where the vinyl is fine but the surrounding stucco is rotted, the waterproofing has failed, and the sill is quietly rotting from the inside out.
- End-of-life weatherstripping on otherwise good frames. A 1990s CGI double-hung can have plenty of life left in the frame while the weatherstripping has hardened and cracked. That’s a repair we’ll recommend honestly, not a replacement we’ll push to pad the invoice.
CGI Service in Redwood Shores: What Local Conditions Mean for Your Equipment
Redwood Shores sits entirely on engineered fill in the tidal flats of San Francisco Bay. Every construction project here contends with bay mud, high groundwater, and fill-area foundation requirements that do not exist even a mile inland in Redwood City or CGI in San Carlos. For CGI window and door service, that changes how we approach every opening. Near the Redwood Shores lagoon, on a two-story stucco townhome, our crew pulled a set of fogged, salt-pitted CGI vinyl sliders that had been leaking at the sill for years. We found shallow bay mud under the slab had let the wall settle. We reframed and re-flashed the openings before installing new CGI windows with upgraded glazing, then rebuilt the bay-facing stucco to keep the marine layer out. The homeowner’s morning fog condensation problem stopped once the sills were sealed and squared. That’s the difference between swapping a window and fixing a house.
CGI Models & Products We Service in Redwood Shores
We service the CGI lines that actually show up in Redwood Shores homes: CGI Premium Vinyl Windows, including the double-hung and slider replacement series common throughout this city’s 1980s and 1990s housing stock; CGI Aluminum Series windows and patio doors; and CGI Sentinel vinyl windows, which were marketed to coastal and high-moisture climates and are found in homes with the worst bay-facing exposure. Our parts approach is simple: we source OEM CGI replacement sashes, hardware, and weatherstripping when the frame is sound and worth saving. When a 30-year-old unit needs a better seal than the original design ever provided, we specify quality aftermarket glass and flashing. We tell you honestly which direction makes sense for your home and your budget.
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AfterCGI Service Pricing in Redwood Shores
Here’s what CGI-related work typically costs in Redwood Shores. These ranges reflect the scale of jobs on this city’s stucco homes, from targeted fixes to full replacements.
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Roof Repair | $400 – $1,800 |
| Roof Replacement | $8,000 – $20,000 |
What drives the cost in Redwood Shores specifically is the sill and flashing detail. On engineered fill with high groundwater, we build a perimeter detail that crews inland never have to touch. Your free estimate includes a full inspection of the openings, the surrounding stucco, and the foundation condition under the affected walls. Call (833) 382-8544 and we’ll give you a written line-item quote before any work starts.
Serving Redwood Shores, CA — Our Local Coverage Area
We’re based in the Redwood Shores area and know this community well for our Home Remodeling in Redwood Shores. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.

FAQs – CGI Construction in Redwood Shores
No. We’re an independent contractor with deep experience servicing and installing CGI products in Redwood Shores, but we are not affiliated with, authorized by, or endorsed by CGI. What that means for you is we can recommend repairs and parts without a manufacturer’s sales agenda driving the decision.
Window replacement on a Redwood Shores home typically runs $4,500 to $15,000, impact window installation $8,000 to $25,000, and roof repair $400 to $1,800. The bay mud and fill conditions under your foundation can add scope to the opening work, which is why we inspect first and quote honestly. Call (833) 382-8544 for an exact number on your house. Estimates are free.
Yes, when the frame is sound and original parts are the right call. We source OEM CGI replacement sashes, hardware, and weatherstripping for repairable units. When aftermarket glass or flashing will perform better than the original design in Redwood Shores conditions, we say so and explain why.
Most single-window or patio door replacements run a day once we’re on site. Larger multi-window jobs on two-story homes typically take two to five days depending on how much reframing and stucco repair the bay-facing walls need. We’ll give you a firm schedule before we start.
We service CGI Premium Vinyl Windows, the Aluminum Series, and CGI Sentinel vinyl windows, plus the patio doors in those product families. If you’ve got a CGI unit we haven’t mentioned, call us with the model number and we’ll tell you whether we can source parts for it.
Service Areas Near Redwood Shores
We’re based close by and regularly work in Redwood Shores service area neighborhoods as well as neighboring cities. You’ll find us in CGI service in Belmont, CGI service in Foster City, San Carlos, and San Mateo. If your home sits on bay fill anywhere in the mid-Peninsula, we understand the conditions.
Book Your CGI Service in Redwood Shores Today
Got a fogged CGI slider, a sticking patio door, or a roof leak on your Redwood Shores home? Call (833) 382-8544 to schedule your free estimate. We’ll inspect the openings, check the foundation, and give you a written quote that tells you what needs fixing and what can wait.
Written by Noel Carranza, Owner at Gold Star Contractors. One call, done right, that’s the only way I know how to run a job.