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ECO Window Systems Construction in Cupertino, CA | Spruce Contractors
We’re an independent contractor providing ECO Window Systems installation, replacement, and retrofit work across Cupertino, from the 95014 flatlands to the hillside lots. The short version: we know these windows’ failure points cold, and we know how Cupertino’s Eichler-era post-and-beam walls, two-story conversion review, and wet-winter/hot-summer swing affect how they get installed. We are not authorized, sponsored, or endorsed by ECO Window Systems. We’re just the crew that has re-flashed, re-glazed, and replaced enough of their units in this city’s 1950s ranches to know exactly what goes wrong and how to fix it right. Call (877) 265-5771 for a free estimate.
Why Cupertino Residents Choose Us for ECO Window Systems Service
Most window crews can swap a vinyl slider into a clean opening. Cupertino’s older housing stock rarely offers a clean opening. The 1950s low-slung roofs and original single-coat stucco mean the first on-site visit often becomes a structural discovery, not just a bid. We’ve pulled ECO Window Systems aluminum sliders out of post-and-beam walls and found no continuous flashing, no thermal break, and sill framing that had been wicking moisture since the Ford administration.
Nate Calloway, our owner, grew up in Hillsborough watching older homes get opened up and rebuilt, then trained through College of San Mateo’s construction technology program before running projects across San Mateo and Santa Clara counties. His daughter recently started at Hillsborough City School, so when he talks about building things that last, he’s not reading from a brochure. Good work doesn’t need a lot of explaining – you can see it.
We specify OEM ECO Window Systems sash, hardware, and glazing components when the series still has parts available. When OEM is discontinued or backordered, we use quality aftermarket weatherstrip, flashing tape, and operators. If a frame is sound, we repair. If the failure is systemic, we tell you replacement is the better money.
Styles & brands we work with







Common ECO Window Systems Construction Problems We Solve in Cupertino
Here are the failures we see over and over in Cupertino homes, tied to why they happen here specifically:
- Binding vinyl slider tracks on 7000 Series units. The dry summer months dump grit and pollen into the tracks of single-hung and slider windows. First winter rain turns that into a grinding paste. The track binds, the sash drags, and homeowners start leaning on the lock to force it. We pull the sash, clean the track bed, and replace worn rollers or glide buttons before the frame itself starts to crack.
- Corroded aluminum sills on 2000 Series sliders in Eichler-style openings. Original thin-slab walls leave almost no room for flashing or thermal breaks. The aluminum frame sits close to the stucco, condensation forms, and the sill corrodes from the inside out. By the time you see white powder at the sill corner, the frame is losing structural bite. We re-flash every rough opening with corrosion-resistant tape and reset the frame plumb before patching.
- Fogged dual-pane IGUs on west-facing units. A decade of hot Cupertino summers bakes the sealant beads on west-facing glass. Where the original bead was thin from the factory, the seal fails and the unit fogs. This is a glass replacement, not a frame replacement. We measure the IGU, match the low-E coating, and swap the pane without disturbing the frame.
- Seized casement and awning operators. An ECO casement crank that never gets lubricated will strip its gear or seize the torque bar. We see this most on kitchen windows over sinks, where cooking oils mix with dust. It turns a two-minute fix into a full hardware replacement, but the replacement is clean and the sash rides true again.
- Frames racked by poor original installation. In some Cupertino ranch home additions from the 1970s and 1980s, the original window opening was never squared. The ECO frame gets shimmed hard to compensate, and over time the sash goes cockeyed. We remove the unit, square the opening, and reset it. The difference in operation is immediate.
ECO Window Systems Service in Cupertino: What Local Conditions Mean for Your Equipment
Cupertino’s single-story-to-two-story conversion review under the Municipal Code changes what windows get installed where. When a homeowner in the flat 95014 core wants to add a second story, the city’s design review process gives neighbors standing to object on privacy and viewshed grounds. That objection filters straight down into the window schedule. We frequently have to specify tempered glazing, obscure glass, or higher sill heights on second-floor ECO units before the permit will clear. That is not a requirement you will run into on a standard replacement one town over. It is a Cupertino-specific constraint, and it means the window quote and the permit package are tied together from day one. On a home off Voss Avenue, we re-flashed original ECO aluminum sliders set into post-and-beam framing, then switched the second-floor units to tempered glazing specifically to satisfy the privacy review. The first-floor sliders went back in plumb before the stucco patch.
The older Cupertino tracts also carry shallow-pitched or flat roof planes. Tight attic clearances mean second-floor window placement interacts with roof framing in ways that never show up on a blueprint. When you are adding a second story to a 1950s ranch, the window head heights and eave lines have to be worked out on site, not pulled from a catalog. We handle that coordination as part of the construction scope, not as an afterthought.
ECO Window Systems Models & Products We Service in Cupertino
We work on the full ECO Window Systems line that shows up in Cupertino homes:
- 7000 Series vinyl single-hung – the most common unit in newer retrofits and second-story additions. We stock replacement balances, tilt latches, and sash locks for this series locally.
- 2000 Series aluminum slider – the original-fit unit in many Eichler-era and 1950s ranch openings. We handle full frame extraction, sill repair, and re-flashing for these.
- Casement and awning units – primarily in kitchens and baths. We replace operators, hinges, and multi-point hardware.
- Fixed picture and architectural windows – common on the street-facing walls of newer contemporary customs. We handle IGU replacement and structural glazing reseal.
When a 7000 Series sash needs replacement, we order OEM where the series is still supported. For 2000 Series aluminum frames that have been out of production for years, we use quality aftermarket weatherstrip and flashing components plus custom-cut glazing. We keep common hardware and sealant stock in our local inventory so Cupertino jobs do not stall waiting on a parts truck.
See the difference
Before
After
Before
After
Before
AfterECO Window Systems Service Pricing in Cupertino
| Service | Typical Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| Home Addition (window scope included) | $45,000 – $130,000 |
| Roof Repair (flashing integration around new windows) | $400 – $1,800 |
What drives the price on an ECO Window Systems job in Cupertino: whether the original frame is salvageable or needs full extraction, whether the opening has hidden post-and-beam structure, whether tempered glazing is required by the conversion review, and whether stucco patching or re-flashing is needed. A free estimate from us includes opening up the wall to inspect what is actually there, not just measuring glass. Call (877) 265-5771 to schedule one.
Serving Cupertino, CA — Our Local Coverage Area
We’re based in the Cupertino area and know this community well, with ECO Window Systems repair in Los Altos and surrounding areas. Use the map below to see our full service coverage — if you’re nearby, we can almost certainly help.
FAQs – ECO Window Systems Construction in Cupertino
Yes, often. When a second floor is added or an existing one is re-windowed, Cupertino’s design review may require tempered or obscure glazing on any window that looks into a neighboring yard or window. We specify the glazing during the permit phase so the window order is not rejected or delayed. Call (877) 265-5771 if you are planning an addition and want the window schedule tied to permit reality.
Sometimes. If the aluminum frame is structurally sound and the corrosion is confined to the sill track, we can remove the sash, clean and treat the corrosion, re-flash the opening, and reinstall with proper thermal breaking. If the frame has corroded through or the glass has lost its seal, replacement is the better money. We will tell you straight either way.
From ECO Window Systems service in Saratoga to Cupertino, the winter rains drive water into any gap or void in the flashing. The summer heat then bakes trapped moisture into the frame and accelerates corrosion. We install with heavier flashing tape, corrosion-resistant fasteners, and proper sill drainage, because a window that survives one wet season and one hot summer here is a window that will last.
Yes. We measure the original rough opening, and we do not assume the old frame was square. We square the opening first, then order the correct ECO series and size. If the opening has settled racking, we address the framing before the window goes in. Call (877) 265-5771 and we will measure the actual opening, not guess at it.
Yes on the permit. Cupertino requires permits for window replacement when the opening changes size or when structural framing is involved. An ADU or second-story addition triggers plan review, neighbor notification, and possibly the viewshed/privacy requirements on glazing. We pull the permits, sequence the inspections, and coordinate the window schedule with the larger scope. Call (877) 265-5771 for a straight answer on your specific project.
Service Areas Near Cupertino
We serve Cupertino and the surrounding communities. Our regular service area includes Santa Cruz, Twin Lakes, Pasatiempo, Live Oak, Soquel, and Capitola. If your project sits outside Cupertino proper, we are happy to take a look. We also run ECO Window Systems service in Prunedale and ECO Window Systems service in San Martin for clients on the southern end of the county. For broader coverage, see our Cupertino service area page. For more on the full scope of brands we install and service, see ECO Window Systems sales & service.
Book Your ECO Window Systems Service in Cupertino Today
If your ECO Window Systems windows are binding, fogging, corroding, or simply not keeping the weather out, we will open the wall, tell you what is actually going on, and give you a written line-item quote. Free estimates for all Cupertino work and ECO Window Systems in Sunnyvale. Call (877) 265-5771 today to schedule.
Written by Nate Calloway, Owner at Spruce Contractors, serving Cupertino and the surrounding Bay Area communities.