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 Florida homeowners arrive naming - the most Miami-Dade certifications in the industry$$$
- More Miami-Dade NOA certifications than any other line we quote
- WinGuard, EnergyVue and ClassicVue Max systems built for every wind zone
- 99% on-time delivery keeps your install date on the calendar
CGIThe heavyweight impact line$$$$$
- Large-missile impact ratings for the strictest wind zones
- Architectural-grade aluminum with commercial-depth frames
- The line we quote when protection is the whole point
CWSThe Florida value pick$$
- Vinyl systems built in Florida for Florida codes
- Strong energy packages at the friendliest price point
- The smart start for whole-home replacements on a budget
ESWSlim lines, big glass$$$$
- Narrow-sightline aluminum for modern elevations
- Oversized openings and floor-to-ceiling glass
- Impact-rated without the bunker look
ECOThe aluminum impact workhorse$$$
- Miami-built aluminum impact systems
- A strong price-to-protection ratio for coastal homes
- Proven inventory lines with short lead times
Window Company in Mountain View, CA
We’re Westlight Windows & Doors, an independently owned and operated Kingswell location serving Mountain View homeowners with window replacement, window installation, and door installation. Mountain View’s housing stock – heavy with mid-century Eichlers, ranch tracts, and original aluminum frames – makes window and door work here different from the Bay Area average. Marine-layer condensation, under-insulated single-pane glass, and original sliding doors with seized rollers are common call drivers across the city. If you’re pricing out window or door work in Mountain View, call (669) 333-7786 and we’ll give you a written price before anything starts.
Why Mountain View Homes Are Different
Mountain View’s mild Mediterranean climate sounds easy on windows, but the marine influence creates a specific problem: cool, foggy mornings and evenings that condense on single-pane glass and make post-and-beam Eichlers feel cold in July once the sun drops. Those original floor-to-ceiling glass walls that make an Eichler an Eichler? Beautiful, and thermally unforgiving. Most were installed with single-pane aluminum frames in the 1950s and 60s. Sixty years of evening fog has done what it does – failed seals, condensation between panes, frames that transfer cold straight through. In the Monta Loma and Rex Manor tracts specifically, we still see original aluminum sliding doors with thin frames and rollers seized from decades of moisture. Replacing that glass is not about curb appeal. It’s about keeping the house comfortable at 7 p.m. in August. We match product to that reality: dual-pane retrofits that bring modern energy performance without turning a mid-century home into something it was never meant to be.
Our Main Mountain View Services
Mountain View homeowners call us most often for three things: replacing old windows that have failed, installing new windows in additions or remodels, and swapping out original doors that have warped or stopped sealing. Each service has its own Mountain View page with specific pricing, process details, and local notes.
Window Replacement in Mountain View
Replacing windows in Mountain View usually means upgrading original single-pane aluminum frames to dual-pane glass – often the single biggest comfort upgrade an Eichler or ranch home gets. We’re frequently asked to preserve the clean, minimal sightlines of mid-century frames while improving energy performance, which is why we carry eight manufacturer lines rather than pushing one product. Condensation between panes and fogged glass are the tell-tale signs of seal failure, and they are common in this city. Full details on replacement costs and options are on the Window Replacement in Mountain View page.
Window Installation in Mountain View
Window installation in Mountain View often means new openings, not just swapping old for new. Additions, remodels, and new construction all need windows installed to current California energy code, and Mountain View’s mix of older homes and newer builds means every project starts with a different rough opening. We measure, order, and install to the specific product line chosen – no forcing a window into a hole it was not made for. See the Window Installation in Mountain View page for specifics on process and pricing.
Door Installation in Mountain View
Door installation in Mountain View spans original sliding glass doors in Eichlers and ranch tracts, entry doors that have warped from years of marine moisture, and modern upgrades to energy-efficient Therma-Tru and ViewLux models. Original aluminum sliders in Monta Loma and Rex Manor often have seized rollers, worn tracks, and failed weatherstripping – the fog shows exactly where the seal gave up. We pull the old frame, correct the rough opening, and install a door that closes square and seals tight. Pricing and specifics live on the Door Installation in Mountain View page.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Brands We Service in Mountain View
We install from eight manufacturer lines, and we keep a working inventory of parts for the brands Mountain View homeowners ask about most: Therma-Tru entry doors, ViewLux patio doors, and impact-rated PGT and CGI lines for homes that need extra protection. Parts stocked locally means shorter turnaround when a roller, hinge, or seal needs replacing. See our brands for specifics on each line.
Pricing for Window Company in Mountain View, CA
| Service | Typical range in Mountain View |
|---|---|
| Single window replacement (dual-pane, standard size) | $700 – $1,200 installed |
| Sliding glass door replacement | $1,500 – $3,500 installed |
| Entry door replacement (Therma-Tru, pre-hung) | $1,200 – $3,000 installed |
| Patio door replacement (ViewLux, standard 6′ panel) | $2,000 – $4,000 installed |
| Eichler floor-to-ceiling glass replacement (per panel) | $900 – $1,800 installed |
| Aluminum slider roller and track replacement | $250 – $500 per door |
| Full-home window replacement (3-bedroom ranch, 8 – 10 windows) | $8,000 – $14,000 installed |
| New construction window installation (per window) | $500 – $1,000 installed |
Prices in Mountain View move most on two things: the size and style of the original openings, and whether the job requires structural work around the frame. Eichler glass walls, oversized ranch windows, and doors set into post-and-beam construction all run toward the higher end of these ranges. Every estimate is a written line-item price handed over before any work starts, and that price does not change at the door.
Neighborhoods We Serve in Mountain View
We work throughout Mountain View, from the mid-century tracts of Monta Loma and Rex Manor to the Eichler clusters in Waverly Park and the ranch homes around Cuesta Park. Each neighborhood has its own mix of original aluminum frames, older sliding doors, and remodel projects that changed the original openings.
- Monta Loma – original aluminum sliders and thin-frame doors, many with failed seals
- Rex Manor – 1950s ranch tracts with original single-pane windows
- Waverly Park – Eichler-heavy with floor-to-ceiling glass walls
- Cuesta Park – ranch homes and remodels, mixed window generations
- Old Mountain View – older bungalows and cottage-style homes with non-standard openings
Most Mountain View neighborhoods are within 20 to 30 minutes of our crews, so we can usually schedule an estimate within a few days of your call.
Service Area – Cities Near Mountain View
While our focus is Mountain View, we also serve homeowners in nearby Peninsula and South Bay communities with the same written-price-before-work standard. Our service area includes Los Altos, CA, Sunnyvale, CA, Stanford, CA, and Cupertino, CA. If you are just outside Mountain View, call us – we’ll confirm coverage and schedule an estimate.
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 Company in Mountain View
Most Mountain View homeowners get an estimate visit within a few business days of calling. Our scheduling is handled by a live person, 24/7, so you do not wait on a callback. Call (669) 333-7786 and we’ll lock in a window that works for you.
Window and door replacements that keep the same rough opening usually do not require a permit in Mountain View, but changing opening size, doing structural work, or working on certain Eichler-adjacent modifications can. We’ll tell you during the estimate what your specific project needs, and we pull permits when required. Call (669) 333-7786 to talk it through.
We cover all Mountain View neighborhoods and the surrounding communities including Los Altos, Sunnyvale, Stanford, and Cupertino. If your home sits just outside the city line, call (669) 333-7786 and we’ll confirm coverage for your address.
Call (669) 333-7786 to schedule your free estimate. You’ll get a written price before any work begins – no surprises at the door, no revised invoices. That’s the Kingswell Guarantee, handed to every Mountain View customer in writing.
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.
Other Westlight Windows San Jose Services
What Neighbors Say About Westlight Windows San Jose
What happens when you call
- 1A real person answersNo phone trees - talk to a local windows & doors pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3We come out and measureLicensed & insured, at a time that suits you - the visit and the quote are both free.
- 4You get the price in writingLine-itemed, yours to keep, and nothing starts until you say go.
What Mountain View Customers Say
"Front door was swollen and wouldn't latch half the year. New door and frame, done in a day. Looks great and actually seals. Written price didn't budge."
- Renee Saldana"Our sliding patio door had come off its track years ago and we just lived with it. New one is smooth as butter. They hauled off the old one and vacuumed up before they left."
- Jessica Landry"Replaced a big picture window that had a failed seal and was always foggy. Can finally see the yard again. On time, tidy, and they stood behind the install with a written guarantee."
- Carol Whitaker