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ES Windows Construction in Portola Valley, CA | Daly City Construction
We provide independent ES Windows service across Portola Valley, from glazing and hardware repair to full window and door replacement in new builds, remodels, and fire-hardening retrofits. The one thing that makes our ES Windows work here different is the Western Hills WUI code: every unit we set or reseal in Portola Valley has to satisfy ember-resistant venting and noncombustible assembly review, not just look right and close tight. We are not an ES Windows authorized dealer, and we don’t pretend to be. We’re a licensed general contractor in Portola Valley that has installed and serviced ES aluminum and vinyl window systems across San Mateo County for years, and we know exactly how these units behave in Portola Valley’s fog, wind, and redwood-and-wildfire terrain. Call us at (866) 505-5254 if you have ES windows or doors that need attention.
Why Portola Valley Residents Choose Us for ES Windows Service
Most window crews can swap a sash and call it done. ES Windows are different. The Series 800 aluminum sliders and vinyl double-hung units have specific glazing channels, roller geometries, and frame tolerances that don’t forgive generic replacement parts. Our crews know which ES glazing gaskets shrink first, which slider tracks pack with debris, and which dual-pane seals fail on the fog-exposed side of a house. Noel Cabrera, owner at Daly City Construction, trained in construction technology at City College of San Francisco and spent years on residential jobs across San Mateo County before focusing on the kind of window and door work that holds up to coastal fog and mountain wind. Tell me what the house needs, not what you think it needs, then we’ll figure out the right fix. That’s how we approach every ES Windows job in Portola Valley, whether it’s a fogged insulated glass unit on an Alpine Road rancher or a full replacement set for a new ADU that has to pass Western Hills review.
Styles & brands we work with
Common ES Windows Construction Problems We Solve in Portola Valley
- Fogged dual-pane insulated glass on fog-exposed elevations. Portola Valley sits in the fog-influenced foothills of the Santa Cruz Mountains. West-facing and ridgeline windows take seasonal fog drip for months, and ES dual-pane units eventually lose their edge seal. We replace the insulated glass unit with OEM or equivalent IGUs and reset the glazing so condensation doesn’t return with the next wet season.
- Glazing gasket and weatherstrip shrinkage on ES aluminum sliders. Wind-driven rain and fog drip work their way past aged gaskets, especially on older Series 800 sliders. We see this most on Portola Valley homes where windows face the prevailing wind off the foothills. We pull the sash, replace the gaskets and weatherstrip, and re-bed the glass.
- Roller and track wear on ES sliding patio doors. Frames shift subtly with seasonal moisture cycling in Portola Valley’s wetter winters and dry summers. That movement loads the rollers unevenly, and tracks fill with redwood duff and grit until the door grinds instead of glides. We replace rollers, clean and realign tracks, and adjust the frame where settlement or moisture cycling has thrown it out of square.
- Corrosion and finish breakdown at aluminum frame corners. When ember-resistant venting or fire-rated assemblies were added around existing ES aluminum windows, the new metal details sometimes trapped moisture against the frame corners. Over a Portola Valley winter that starts pitting. We treat the corrosion, re-coat the affected areas, and correct the flashing so water doesn’t collect at the same spot again.
- Condensation between panes after fire-hardening retrofits. Tightening up a house for WUI compliance changes interior humidity and pressure. Older ES dual-pane units that were fine before can start fogging after the house gets new venting and air-sealing. We diagnose whether it’s a true seal failure or a ventilation issue, then fix the right thing instead of just swapping glass.
ES Windows Service in Portola Valley: What Local Conditions Mean for Your Equipment
Portola Valley’s Western Hills WUI code requires ember-resistant vents and noncombustible assemblies, so ES window and door replacement here isn’t just a glazing upgrade. The rough openings, flashing, and venting details all have to satisfy fire-hardening review, which changes how we set and seal every unit. That’s the part most generic window installers miss, and it’s why we treat every ES Windows job in Portola Valley as a fire-hardening job first and a window job second. On a full home remodeling project in Portola Valley off Alpine Road in 94028, we pulled a set of fogged ES aluminum sliders out of a mid-century rancher and replaced them with new ES vinyl double-hung and slider units set with ember-resistant flashing and noncombustible trim to satisfy the Western Hills review. Between the fog drip and the winter wind, the old gaskets had shrunk and the tracks were packed with redwood debris; we rebuilt the openings, re-flashed, and the new units came through the next wet season without a leak. That’s the standard we hold for every ES Windows installation in this town.
ES Windows Models & Products We Service in Portola Valley
We service the full ES Windows line that shows up in Portola Valley homes: Series 800 aluminum single-hung and slider windows, ES vinyl double-hung new-construction windows, ES sliding glass patio doors, and the fixed and awning aluminum units often used in fire-hardened assemblies. When OEM glazing, hardware, and gaskets are still available, we use them to keep fit and finish correct. When ES has discontinued a part, we move to quality aftermarket rollers, weatherstrip, and insulated glass units from suppliers we’ve vetted over years of trial and error. We also tell owners honestly when a damaged ES window or door can be rebuilt with new glass and hardware versus when it makes more sense to replace it with a modern fire-rated assembly. No guesswork. No pushing replacement when a rebuild is the better call for your budget in this Portola Valley market.
See the difference
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AfterES Windows Service Pricing in Portola Valley
Here’s what ES Windows construction work typically runs in Portola Valley, based on the project scope and the fire-hardening details involved.
| Service | Price Range |
|---|---|
| Window Replacement | $4,500 – $15,000 |
| Impact Window Installation | $8,000 – $25,000 |
| ADU Construction (with ES Windows) | $90,000 – $220,000 |
What drives cost here more than anything is the opening: whether we’re re-flashing and re-venting an existing rough opening to satisfy Western Hills review, or setting new units in a fresh wall. A simple same-size replacement on a single window is on the lower end. A multi-unit replacement with ember-resistant details, noncombustible trim, and insulated glass upgrades lands higher. Every free estimate includes a written line-item scope so you see exactly where the money goes. Call (866) 505-5254 for an exact quote.
Serving Portola Valley, CA — Our Local Coverage Area
We’re based in the Portola Valley area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – ES Windows Construction in Portola Valley
Do my ES Windows need to be replaced, or can they be repaired, when the insulated glass fogs up in Portola Valley? If the fog is between the panes and the edge seal has failed, we replace the insulated glass unit, not the whole window. The frame and hardware are often still sound. But if the frame has corrosion and the glazing channels are compromised, a full replacement might be the smarter long-term call. Call (866) 505-5254 and we’ll tell you straight which one applies to your windows.
Can I add ES windows to an ADU or guest house in Portola Valley? Yes. We include ES window and door packages in ADU construction across Portola Valley, working with prefab partners like Abodu, Dvele, and Plant Prefab where the project calls for it. The windows have to be set to the same WUI standards as the main house, which we handle as part of the build.
Does Portola Valley’s fire code affect which ES Windows I can install? It does. The Western Hills WUI code requires ember-resistant vents and noncombustible assemblies, so the rough opening, flashing, and venting details all have to pass review. The ES window itself is only part of the assembly. We set and seal each unit to satisfy that review, not just the manufacturer’s install instructions.
How do the fog and winter winds in the Santa Cruz Mountain foothills affect ES sliding doors and windows? Fog drip and wind-driven rain load the weatherstrip and gaskets on the windward side of the house, and seasonal moisture cycling can shift frames enough to wear rollers unevenly. Over time, you get air leaks, grinding tracks, and eventually fogged glass. We address all of it when we service the unit. Call (866) 505-5254 for an inspection.
Are you authorized by ES Windows to service or replace their products? No. We’re an independent general contractor. We install and service ES Windows using OEM parts where they’re available, but we are not authorized, sponsored, or endorsed by ES Windows. For a full list of ES Windows sales and service options, see our ES Windows sales & service page.
Service Areas Near Portola Valley
We serve Portola Valley and the surrounding foothill communities. Our crews regularly work in Woodside, Ladera, Los Altos Hills, Atherton, and the broader 94028 area. See our Portola Valley service area page for coverage details. We also handle ES Windows in ES Windows service in Ladera and ES Windows service in Los Altos Hills.
Book Your ES Windows Service in Portola Valley Today
If your ES windows are fogged, leaking, or grinding, call (866) 505-5254 to schedule a free estimate. We’ll look at the units, check the flashing and venting against Western Hills requirements, and give you a written scope with no obligation. Noel Cabrera and our crew at Daly City Construction are ready when you are.
Written by Noel Cabrera, Owner at Daly City Construction, serving Portola Valley and San Mateo County.