Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindow Company in Mountain View, CA
Westlight Windows & Doors handles window replacement, window installation, and door installation across Mountain View from our position as an independently owned and operated Kingswell location. Most of the homes we work on here were built between 1948 and 1975, and many still carry their original single-pane aluminum sliders with dried glazing compound and corroded tracks. The marine layer that rolls in from the South Bay wetlands two to three miles away makes that corrosion worse than what you’d see in Cupertino or Sunnyvale, which means Mountain View jobs lean heavily toward full-frame replacement rather than glass swaps. If you’re ready to price the work, call (903) 354-7134.
Why Mountain View Homes Are Different
Rex Manor, Waverly Park, Cuesta Park, and the streets flanking Castro Street are dominated by single-story post-war ranch homes. Those houses were framed for aluminum sliding windows with single panes, and most of them still have those originals in place. The problem here isn’t just age. Mountain View sits low against the South Bay marshlands, so morning fog burns off later and humidity lingers longer than in hillside neighbors like Los Altos Hills. That persistent moisture condenses on single-pane glass, swells wood sills, and oxidizes aluminum tracks even without rain. We regularly see windows in Mountain View where the edge fogging on cool mornings looks like a failed insulated seal, but when we pull the sash we find the window never had insulated glass at all. It was single pane from the start, and the fog is just condensation doing what condensation does here. That distinction matters because it changes the conversation from repair to replacement, and it pulls in California Title 24 Climate Zone 4 compliance for U-factor and SHGC minimums. In a market like Mountain View, many homeowners want that compliance documented for permit records.
Our Main Mountain View Services
The two calls we get most from Mountain View homeowners are for replacing failed or fogged windows and for installing new doors, though we also handle new-construction and addition windows. Each service has its own detailed Mountain View page linked below.
Window Replacement in Mountain View
Replacement here usually means pulling a full aluminum frame out of a stucco or wood opening and setting a new dual-pane unit in its place, not just swapping glass. The marine moisture that sits on Mountain View homes means seal failure and track corrosion are the two big drivers. We carry eight manufacturer lines, including PGT and CGI, so if you want impact-rated glass or a specific low-e coating, we can match it. Window Replacement in Mountain View
Window Installation in Mountain View
New window installation in Mountain View often comes up on additions, remodels, or when a homeowner opens a wall and decides to change the opening size. The ranch-era framing in Rex Manor and Cuesta Park is straightforward to work with, but the Title 24 requirements in Climate Zone 4 still apply, and we document compliance for permits. Products from ES Windows and ECO Window Systems are common choices here for energy performance. Window Installation in Mountain View
Door Installation in Mountain View
Entry doors on Mountain View’s post-war ranches are often hollow-core originals, and in some older homes we still find jalousie doors that do almost nothing for security or energy loss. Door installation here means setting a properly sealed, square-hung unit, whether it’s a Therma-Tru entry system or a simpler interior door. We measure, write the price, and pull permits when the opening changes. Door Installation in Mountain View
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 and service windows and doors from PGT, CGI, CWS, and ES Windows, among the eight manufacturer lines we carry. Common parts and hardware are stocked locally in the Bay Area, which keeps most Mountain View turnaround times short. Our brands page shows the full lineup.
Pricing for Window Company in Mountain View, CA
| Service | Typical range in Mountain View |
|---|---|
| Single window replacement, standard size | $600-$1,200 installed |
| Single window replacement, large or custom | $1,200-$2,500 installed |
| Full-frame window replacement, per window | $1,000-$2,800 installed |
| Standard entry door replacement | $1,500-$3,500 installed |
| Premium or custom entry door | $3,500-$8,000 installed |
| Interior door installation, per door | $350-$900 installed |
| Sliding glass door replacement | $2,000-$5,500 installed |
| French door installation | $2,500-$6,500 installed |
| Single hung window | $400-$900 installed |
| Double hung window | $500-$1,100 installed |
| Casement window | $700-$1,500 installed |
| Picture window | $600-$1,800 installed |
What pushes a Mountain View price up is usually the full-frame work. When the original aluminum frame has corroded against stucco, the job is more than a sash swap, and permitting for Title 24 compliance adds a documentation step. Whatever the number, you get your written price before any work starts, and that number doesn’t change at the door.
Neighborhoods We Serve in Mountain View
We work throughout Mountain View, from the 1950s tracts near Castro and El Camino to the 1980s and 1990s condos along Middlefield and Central Expressway. Our crews are local to the South Bay, so we’re typically scheduling Mountain View work within a few days, not weeks.
- Rex Manor
- Cuesta Park
- Waverly Park
- Old Mountain View
- Blossom Valley
Service Area – Cities Near Mountain View
Westlight Windows & Doors serves Mountain View and the surrounding Peninsula and South Bay communities. If you’re in Los Altos, CA, Sunnyvale, CA, Stanford, CA, or Cupertino, CA, we can help there too. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews serve Mountain View directly.
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 appointments are scheduled within a few days. Phone lines are answered by a live person 24 hours a day, 7 days a week, so you can book an estimate whenever it’s convenient. Call (903) 354-7134.
Full-frame replacements and any opening size change typically require a permit, and Title 24 Climate Zone 4 compliance must be documented. We handle the permit paperwork and keep the compliance records. Smaller insert replacements may not need one, and we’ll tell you which applies.
No. Your written price is set before any work begins, and Westlight doesn’t revise quotes at the door. If something unexpected comes up during the job, we talk to you first, before any additional work is done. The Kingswell Guarantee puts that in writing.
Call (903) 354-7134 to schedule your free estimate for window or door work in Mountain View.
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
"Replaced eight drafty old windows that were basically single pane. The house is warmer already and the street noise is way down. Crew was on time both days and the price was exactly the quote."
- Harold Bemis"Our energy bill in summer was brutal. New windows made a real dent in it. Salesman wasn't pushy and didn't do the fake "today only" discount thing the others tried."
- Bethany Oh"Two bedroom windows that never opened and one that wouldn't stay up. All replaced in an afternoon. The crew was clean, hauled off the old frames, and the quote held."
- Colette Rhee