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
PGT Construction in Cupertino, CA | San Bernardino Contractors
We provide independent PGT window and door service across Cupertino and nearby communities, from PGT repair in Los Altos to full impact-rated replacements on new custom builds here. What sets our PGT work apart here is that we understand the city’s design-review process and the realities of working on 1950s-70s ranch stock that’s constantly being torn down, expanded, or retrofitted. Whether you need one fogged sash replaced or an entire elevation re-glazed before a home addition, call (855) 473-5620 for a free estimate.
Why Cupertino Residents Choose Us for PGT Service
Ruben Castillo, our owner, learned framing and window installation the hard way: weekends reroofing houses and setting openings with his uncle in San Bernardino, then formal training at San Bernardino Valley College where he got serious about load paths and not cutting corners on anything structural. That background matters in Cupertino, where a window install that isn’t dead plumb will show up as a binding sash within six months. We know the PGT catalogue cold: WinGuard aluminum and vinyl impact series, the standard Aluminum and Vinyl non-impact lines, which series suits which opening, and where PGT’s frame and glass options fall short. Because we’re independent, not manufacturer-affiliated, we can sell a straightforward PGT replacement or push for an out-of-warranty fix when the frame is still sound. If it’s not built right the first time, you’re just paying for it twice.
Our crews have pulled PGT units out of Cupertino ranchers, Eichler-influenced tracts, and two-story custom rebuilds, so we’ve seen every failure mode this climate can throw at a window. We carry PGT OEM sashes, rollers, weatherstripping, and insulated glass units where they’re still available, and quality aftermarket hardware when OEM stock has dried up. The point is always the same: fix what’s fixable, replace what isn’t, and give you a straight answer either way. Browse our PGT sales & service page if you want the full breakdown of what we handle.
Styles & brands we work with
Common PGT Construction Problems We Solve in Cupertino
- Faded, chalky vinyl frames and cracked weatherstripping. Cupertino’s long dry summers mean south- and west-facing PGT vinyl units take relentless UV exposure. The frames go chalky, the weatherstripping hardens and splits, and air leaks start showing up on your cooling bill. We replace the gaskets and, when the frame is too far gone, we’ll tell you plainly that a replacement sash or full unit is the better call.
- Failed insulated-glass units with fogging or silica haze. The original dual-pane windows in Cupertino’s older builds are reaching end of life. Seal loss shows up as condensation you can’t wipe off or that gritty haze between the panes. We source PGT OEM replacement IGUs and swap them without disturbing surrounding stucco or trim.
- Worn tandem rollers and latches on WinGuard sliders and casements. Impact-rated units are heavy. When the rollers wear, the sash racks and the lock won’t engage. This is a safety concern on a window meant to protect against flying debris. We replace the tandem roller assemblies and adjust the latch points so the unit seals and locks the way PGT intended.
- PGT units left opening into newly framed rough openings during additions or rebuilds. Cupertino’s teardown-and-rebuild cycle means we routinely see an existing PGT window or slider that a framer left in place, now mismatched to a new opening. The sill and nailing fin never matched. We pull the unit, reflash the opening, and reset it properly so water stays outside.
- Single-pane and early dual-pane openings that don’t match any stock PGT size. Cupertino’s 1960s ranchers were framed for period windows that don’t align with modern PGT stock dimensions. We handle the custom-sizing and rough-opening rework rather than hoping a stock unit will squeeze in, which it won’t.
PGT Service in Cupertino: What Local Conditions Mean for Your Equipment
Cupertino’s 1950s-70s ranch stock was built with single-pane and early dual-pane openings sized for period windows, so a close-to-original PGT replacement often means custom-sizing and reworking the rough opening rather than dropping in a stock unit. The typical original window in a Pomona Avenue or Byrne Avenue rancher won’t match any current PGT production size, which means we’re routing out jambs, shimming, and reflashing to make the opening square and watertight before the new unit goes in—similar to the custom work we do for PGT service in Saratoga. On top of that, the city’s strict neighborhood design review, driven by tech-executive clients who expect a certain street profile, means any visible window change gets scrutinized for frame profile and finish. A homeowner who thinks they’ll swap in a white vinyl PGT slider on a house with a dark bronze aluminum original is in for a fight with the reviewers. We’ve been through enough of those reviews to tell you what will pass and what won’t before you spend a dollar. That’s the Cupertino-specific part: in most cities, a window is a window. Here, it’s a design-review submission.
PGT Models & Products We Service in Cupertino
We service the full PGT residential lineup: WinGuard Aluminum Impact-Resistant Series (fixed, casement, and sliding-glass door units), WinGuard Vinyl Impact-Resistant Series, the standard Aluminum Series, and the standard Vinyl Series. For repairs, we source PGT OEM replacement sashes, glass, rollers, and weatherstripping where still available. When OEM is discontinued, which happens often on 20-year-old units, we use quality aftermarket hardware that matches the load rating and geometry. We keep common PGT roller assemblies and weatherstripping profiles on hand for faster Cupertino turnaround, and anything we don’t stock gets ordered before we open up your wall. Our service covers all of Cupertino, from the flats near Stevens Creek Boulevard up to the hillside lots near Rancho Rinconada. See our Cupertino service area page for the neighborhoods we cover most often.
See the difference
Before
After
Before
After
Before
AfterPGT Service Pricing in Cupertino
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition (with window/door scoping) | $45,000 – $130,000 |
What drives the cost in Cupertino? Three things: whether you’re doing standard or impact-rated glazing, how much rough-opening work the original framing requires, and whether the project needs design-review revisions to pass. A straight replacement of a few standard PGT vinyl sliders sits at the low end. A full elevation of WinGuard impact units on a custom rebuild, with the structural rework that goes with it, lands higher. Your free estimate includes a site visit, measurements, and a written line-item quote with no change orders for anything we’ve already scoped. Call (855) 473-5620 to schedule yours.
Serving Cupertino, CA — Our Local Coverage Area
We’re based in the Cupertino area and know this community well, and we also offer Cupertino Home Remodeling. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – PGT Construction in Cupertino
In most cases, yes, if the change is visible from the street and your property falls within the city’s design-review overlay, which covers much of Cupertino’s older residential neighborhoods. This applies especially when you’re changing frame material, color, or profile rather than doing a like-for-like swap. We can tell you during the estimate whether your project needs a design-review submittal and help you prepare the documentation. Call (855) 473-5620 for an exact read on your house.
Sometimes. PGT has changed their finish lineup over the years, and the original bronze or off-white on a 1960s unit may no longer be in production. If the frame is still sound, we’ll source the closest available match or, when that’s not possible, we’ll say so and quote a full replacement that satisfies design review. Don’t pay for a mismatch that reviewers will reject. Call (855) 473-5620 and we’ll tell you what’s actually possible.
Standard PGT window replacement on a Cupertino home typically runs $4,500 – $15,000 depending on the number of openings and rough-opening work involved. Impact-rated WinGuard installation runs $8,000 – $25,000 because the units, glass, and hardware carry a premium, and the installation tolerances are tighter. Your exact number depends on how many windows, what series, and whether you’re on the flatlands or a hillside lot. Estimates are free, so call (855) 473-5620 to get your line-item quote.
We’ll assess it. If the frame is sound, the glass is clear, and the unit is still square, we’ll pull it, reflash the opening, and reset it properly. If the frame has rot or the insulated glass has failed, reusing it is a bad investment. The teardown-and-rebuild cycle in Cupertino means this question comes up constantly. We’ll give you an honest answer either way. Call (855) 473-5620 to have us look at it.
Usually repair. A binding slider on a PGT unit is most often worn tandem rollers or a racked sash, both of which we can fix with OEM or aftermarket parts. If the frame is cracked or the glass has failed, we’ll recommend replacement instead. In Cupertino, where the dry summer dust grinds rollers and the winter rains expose any seal gap, having a slider that actually locks matters. Call (855) 473-5620 for a diagnostic visit.
Service Areas Near Cupertino
We service PGT windows and doors throughout Cupertino and into the surrounding South Bay and Peninsula communities. Our crews are also active in PGT service in Sunnyvale, where the same mid-century ranch stock and design-review issues apply, and in PGT service in Loyola for homeowners on the west side of the valley. If you’re in a neighboring city and need independent PGT service, call (855) 473-5620 and we’ll let you know if we cover your street.
Book Your PGT Service in Cupertino Today
One contractor, every phase: from the roof down to the pavers, and every PGT window in between, you pick the brand and we handle the build, including our General Contractor in Cupertino services. Call (855) 473-5620 to schedule your free estimate, or reach out for a same-week diagnostic visit if you have a fogged glass unit or a slider that won’t lock. We’ll measure, quote, and walk you through what design review requires.
Written by Ruben Castillo, Owner at San Bernardino Contractors, serving Cupertino since he picked up his first PGT sash and learned to read a nailing fin.