Free written scope consultation - allowances, timeline, and change-order rules on paper before a single trade is scheduled
CGI Windows & Doors: The San Jose Owner’s Guide
We stock and install CGI-compatible windows and doors across San Jose, with typical installed replacement costs running $5,310-$17,700 depending on opening size, series, and whether the frame needs rework. Most CGI parts we carry on the truck, and we can measure, quote, and start the same day you call. Most San Jose homeowners discover a CGI part has failed when the sash won’t stay open, the lock won’t engage, or they feel a draft along the sill that wasn’t there last season.
Which CGI Models This Applies To
CGI manufactures three residential series that circulate widely in San Jose: the Estate Series (aluminum impact), the Sentinel Series (vinyl impact), and the WinGuard Vinyl line. The Estate Series uses a heavier extruded aluminum frame with a 2-5/8 inch frame depth, while Sentinel and WinGuard Vinyl share a 3-1/4 inch pocket depth but use different balance systems and glazing beads. To identify your exact part, check the etched mark in the glass corner for the series code, then measure the visible glass width and height to the nearest 1/8 inch. The sash label, usually found on the top rail behind the screen, carries the manufacturing date and NFRC rating.
CGI’s OEM parts come through their Florida distribution network with a 10-14 day lead time to California. We also source quality aftermarket equivalents from AmesburyTruth and Caldwell for balances, locks, and rollers, which meet the same AAMA 101 specifications and carry comparable warranties. For impact-rated units in San Jose, we stay with OEM glass and frame components. Swapping a non-impact roller into an impact-rated sash voids the Miami-Dade NOA certification, and that matters if you ever sell the home or file an insurance claim after a wind event.
Signs Your CGI Windows & Doors Is Failing

- Sash drops or won’t stay open. The coil balance has lost tension or the pivot bar has worn flat. In San Jose’s dry summers, the lubricant dries and the metal wears faster than the manufacturer spec suggests.
- Lock won’t engage or feels loose. The keeper has shifted or the cam lock has rounded off. We see this often in Willow Glen homes where the original installation left the frame slightly out of square.
- Draft along the sill or jamb. The weatherstrip has compressed or the sill track has worn low enough that the sash no longer seats fully. Coastal moisture from the Bay accelerates the compression set in silicone bulb seals.
- Rolling resistance or grinding when sliding. The tandem roller assembly has flat-spotted or the axle has corroded. Debris in the track acts like sandpaper once the roller shield cracks.
- Condensation between glass panes. The insulated glass unit (IGU) seal has failed. In San Jose’s temperature swings, 10-15 years is realistic for IGU longevity; south-facing units go sooner.
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For a standard CGI window replacement in San Jose, budget $5,310-$17,700 installed. A single-hung or slider in a stock size with no frame damage sits at the lower end. Oversized openings, stucco return repair, or upgrading from non-impact to impact-rated glass push toward the upper end. That price includes removal and disposal of the old unit, installation of the new sash or full frame, new fasteners and sealant, interior and exterior trim adjustment, and cleanup. We pull a permit when the replacement alters the rough opening or changes the egress dimensions, and we pass inspection before we invoice.
Under Clause 1 of the Haven Standard, you get the written price before anyone starts. The quote is flat, line-itemed, and includes our 365-Day Done Right Promise. Every visit produces a documented photo record, included standard, so you see what we found and what we did.
DIY or Call Us?

An owner can safely check the sash label, measure the visible glass, and vacuum debris from the track. Do not attempt to remove a coil balance or adjust an impact-rated sash yourself. The spring tension is significant, and the interlayer in impact glass behaves differently than standard laminated glass if the sash slips. Incorrect reinstallation can also compromise the water management path, channeling rain into the wall cavity instead of out the weep holes.
We’ve rescued more than one San Jose homeowner who watched a video, bought the wrong roller, and scratched the sill track trying to force it in. Measure twice, permit once, then we talk timeline. For a part match that actually fits and a crew that cleans up after, call (669) 271-8644 and we’ll schedule your free estimate.
FAQs
Expect 20-30 years for the frame and 10-15 years for the IGU and moving hardware, though south-facing units and those near the Bay see faster seal degradation. Call (669) 271-8644 for an exact quote on your specific unit - estimates are free.
Hardware like locks, keepers, and rollers can usually be swapped individually. IGU fogging and frame corrosion require full sash or frame replacement. We assess on site and quote both paths when both exist.
A standard sash replacement takes 2-3 hours per opening. Full-frame replacement with stucco repair runs 1-2 days. We quote the timeline in writing with the price, and no work proceeds on a change until the change order is signed.
We carry common balances, rollers, locks, and keepers for Estate, Sentinel, and WinGuard Vinyl series. Specialty glass and frame extrusions order in with a 10-14 day lead time. We confirm parts availability when you call so you’re not waiting for a second trip.
Written by Grant Rowan, Owner, Rowan Construction Group San Jose at Rowan Construction Group San Jose, serving San Jose and nearby areas.







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