New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows San Jose pairs proven product lines with our own installing crews for lasting performance - and a price we put in writing.
Choose your installer
The unit is half the job - the install is the other half. Our own background-checked crews measure, set, seal and insulate every opening, and they know the lines we quote inside and out because they install them every week.
Select the right products
Compare styles, materials and glass packages side by side until the fit is right for your rooms, your budget and your goals. The product-line comparison below is the place to start.
Prepare your home for install
Before install day we walk you through a short checklist - furniture pulled back, treatments down, a clear path to each opening - so install day is watch-it-happen, not scramble.
Compare the Lines We Quote
Every project is priced on the same lines, side by side - the price indicators below are relative, and your consultant shows exact numbers on your actual openings.
PGTThe line homeowners arrive naming - the most impact certifications in the industry$$$
- More impact certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe value pick$$
- Vinyl systems built to strict wind codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Factory-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Fast, Reliable Window Replacement Across Mountain View
If you live in Mountain View, you already know the fog. It rolls in most evenings from the Bay, settles over the low roofs of the Rex Manor and Monta Loma tracts, and finds its way to the thin aluminum frames of a 1960s ranch window. The condensation beads up, drips into the track, and slowly seizes the rollers. That’s the call we answer most often in Mountain View: not “my window looks bad,” but “my window won’t move, and the glass fogs up every morning.” We’re the Window Replacement team at Westlight Windows San Jose, and we serve Mountain View homeowners directly, with a written price before any work starts and a live person on (669) 333-7786 whenever you call.
Why Westlight Windows San Jose Is Mountain View’s Preferred Window Replacement Company
Homeowners here have been burned before by a contractor who underbid the job, arrived late, and left without fixing the seal that failed two winters later. We hear that story often enough that Owen Satterfield, who leads Westlight Windows San Jose, built the process around a simple promise: the price you agree to is the price you pay, written down before work starts, and if something fails within the guarantee period, we return and fix it at no charge. That’s the Kingswell Guarantee, and it applies to every Window Replacement in Mountain View project we take on.
We’re not a franchise with a call center in another state. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and our crews drive into Mountain View for our Door Installation in Mountain View the same week we give the quote in most cases. Our technicians are background-checked and uniformed, and they carry eight manufacturer lines on the truck: PGT, CGI, CWS, ES Windows, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. The right product gets matched to the fog and the frame, not the other way around.
Window Sash Replacement in Mountain View
Window Sash Replacement in Mountain View is a different job than it is inland. The sash, the moving part of the window that holds the glass, takes the worst of the marine layer. In older ranch homes that still have their original double-hungs, the jamb hardware corrodes from years of cool evening fog, and the sash no longer seals against the frame. Homeowners in the Waverly Park and Cuesta Park neighborhoods tell us the same thing: the window rattles, the room never warms up, and the paint has started to bubble around the hardware.
A typical sash replacement in Mountain View runs $380 to $620 per window installed, depending on the frame material and glazing. That price includes removal of the old sash, new stainless hardware, and a written guarantee.
Hardware That Survives the Fog
We specify stainless steel or hot-dip galvanized hardware for every sash in Mountain View. Inland, plated steel is fine. Here, it fails within five to seven years. The price difference is small, usually $15 to $25 per window, and it means the sash moves cleanly a decade later.
Eichler Sash Geometry
Eichler homes in Mountain View have non-standard sash dimensions, often wider and shorter than modern replacements. We order custom-sized sashes from ES Windows and Mr-Glass to preserve the clean mid-century lines. A custom Eichler-sized sash runs $120 to $180 more than a standard size, leaving the original post-and-beam look untouched.
Window Glass Repair in Mountain View
Window Glass Repair in Mountain View usually means one of two things: a cracked pane from a stray baseball near Whisman Park, or a fogged insulated glass unit that lost its seal. The seal failure is the one we see most often in the 1950s and 60s single-pane homes that were retrofitted with dual-pane glass in the 1990s. Those early retrofits used butyl rubber seals that the cool marine air broke down faster than anyone expected.
Replacing a fogged insulated glass unit in Mountain View runs $210 to $380 for a standard sash. A cracked pane is usually $160 to $290, including glass, labor, and disposal.
When Fog Means More Than Fog
Condensation on the outside of the glass is normal on Mountain View mornings. Moisture between the panes is not. It means the desiccant inside the spacer is saturated and the argon fill has leaked out. The glass can’t be cleaned. It has to be replaced. We measure the thickness and coating on-site and order the exact replacement from PGT or ECO Window Systems.
Cracked Glass in Original Aluminum Frames
Older aluminum-framed windows with single-pane glass are straightforward to reglaze. We remove the old glazing bead, clean the channel, and set new glass with a marine-grade sealant. The repair is durable, but be honest: the frame still conducts cold. Many homeowners in Mountain View replace the glass first, then come back to us for a full frame replacement when the utility bills make the case.
Trusted Brands We Service in Mountain View
We stock local parts for the brands Mountain View homeowners already have. Therma-Tru for entry doors, Viewlux service in Mountain View for oversized picture windows, PGT and CGI for impact-rated replacements. If you have a failed sash from an older Pella or Milgard line, we can usually source a direct replacement, though our stock leans toward the eight lines we carry. The advantage of local stock is speed: when we diagnose a failed seal in a Monta Loma ranch, the replacement glass is often in our Bay Area inventory, not someone else’s four-week backorder.
Common Window Replacement Problems We See in Mountain View Homes
- Seized sliding door rollers in original aluminum frames. The Monta Loma and Rex Manor tracts still have their original thin-frame aluminum sliders. Decades of marine moisture have corroded the rollers, and the door drags or won’t move at all. We replace the entire door with a thermally broken, dual-pane unit and stainless steel rollers.
- Fogged insulated glass from seal failure. The 1990s dual-pane retrofits are aging out across Mountain View. Desiccants are saturated, argon is gone, and the glass can’t be repaired, only replaced. We replace the unit, not the whole window, when the frame is still square.
- Corroded jamb hardware on double-hung windows. Cool evening fog condenses on the frame, drips down, and corrodes the balance and pivot hardware. The sash won’t stay up. We rebuild the jamb with stainless hardware and replace the balance.
- Cold radiation through original single-pane glass. In the Cuesta Park and Waverly Park ranch homes, the original aluminum windows radiate cold every foggy evening, even in summer. Replacement with low-e dual-pane glass raises the interior surface temperature by 12 to 18 degrees on a cool night.
Pricing for Window Replacement in Mountain View, CA
A standard vinyl insert window in Mountain View runs $640 to $940 installed. A full-frame replacement on a 1960s ranch home runs $980 to $1,480 per window, because the old aluminum frame has to be removed, the opening re-flashed, and new trim installed. A custom Eichler window with floor-to-ceiling glass and post-and-beam reveals runs $1,600 to $2,600 per opening. These are real ranges, not bait. The exact price depends on glass package, frame material, and the condition of the existing opening. The quote you get is the price you pay, written down before work starts. Call us at (669) 333-7786 for a free estimate, and we’ll come measure the actual windows.
We Also Serve Cities Near Mountain View
Our crews cover the surrounding area, including Los Altos, Sunnyvale, Stanford, and Cupertino. Each of those cities has its own housing stock and its own problems, but the marine layer doesn’t respect city lines. If you’re in one of those neighborhoods and dealing with the same fogged glass and seized hardware, call us at (669) 333-7786 and we’ll schedule a look. Or start with Mountain View and we’ll help you figure out what’s next.
Serving Mountain View, CA - Our Local Coverage Area
We’re based in the Mountain View 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 About Window Replacement in Mountain View
The marine layer brings cool, damp air over Mountain View nearly every evening, and the original aluminum frames from the 1960s and 70s condense that moisture directly onto the roller tracks. Rollers rust, the track pits, and the door drags. The permanent fix is to replace the door with a thermally broken frame and stainless steel rollers. We do that regularly in the Monta Loma and Rex Manor tracts. Call (669) 333-7786 and we’ll tell you if your door is worth saving.
Yes, and we do it often. The key is a custom-sized, narrow-profile dual-pane unit that matches the original reveal. ES Windows and Mr-Glass make frames thin enough to sit inside the original post-and-beam openings. The glass package meets California Title 24, and the look stays true to the mid-century design. It costs more than a standard window, but not as much as losing the Eichler’s defining feature.
For a typical single window, the difference between stainless steel and plated steel hardware is about $15 to $25 per window. For a sliding glass door, it’s $60 to $110. Plated hardware will corrode within five to seven years in Mountain View’s marine air. Stainless lasts decades. The cheap spec always costs more by the tenth year, because you pay for the same repair twice.
Yes. The single-pane aluminum windows in Rex Manor conduct heat straight out the glass, and when the fog rolls in at 7 p.m., the interior surface temperature drops fast. Rooms feel unheated even when the thermostat says 70. Replacing the glass with low-e dual-pane units, which have a thin coating that reflects heat back into the room, is the only real fix. Call (669) 333-7786 for an exact quote on your specific windows.
No, Mountain View does not require impact-rated glazing for standard residential window replacement. The city follows California energy code, not wind-borne debris requirements that apply in coastal hurricane zones. Some homeowners still choose PGT or CGI impact-rated glass for security or noise reasons, and we’re happy to price it, but it is not a code requirement here.
If you’re ready to talk about replacing windows in Mountain View, call Westlight Windows San Jose at (669) 333-7786. We’ll give you a free estimate, a written line-item price, and a clear arrival window. No revised invoices at the door, no pushy sales script. Just straight answers from Owen Satterfield and a crew that shows up in the window we promised.
Written by Owen Satterfield, Owner at Westlight Windows San Jose, serving Mountain View since 2009.
Six Reasons Homeowners Choose Westlight Windows San Jose
Laminated glass and reinforced frames hold up to wind-driven rain, hail and flying debris, so your openings stay sealed when the weather turns.
Low-E insulated impact glass from our manufacturer lines commonly cuts monthly cooling bills 20-30%.
Laminated impact glass shuts out up to 40% of outside noise - traffic, neighbors, weather.
Monitoring services run $30-90 a month. Laminated impact glass resists forced entry around the clock, with no subscription.
Tighter seals and insulated glass even out hot and cold rooms and stop the drafts at the frame.
A full impact package upgrades curb appeal, buyer confidence and appraised value in one project.