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
Therma-Tru Windows & Doors in Mountain View, CA | Westlight Windows San Jose
We provide independent Therma-Tru service across Mountain View, from entry door adjustments to full Slim-Line slider replacements. The one thing that makes our Therma-Tru work here different: we know which failures show up in Monta Loma and Rex Manor specifically, because we’ve pulled those doors apart. If your Therma-Tru door is dragging, fogging, or sagging, call (669) 333-7786 for a free estimate with a written price before any work starts.
Why Mountain View Residents Choose Us for Therma-Tru Service
Owen Satterfield has spent the better part of two decades replacing windows and doors across the South Bay, and he built Westlight Windows San Jose around a simple measure: a frame either fits square or it doesn’t. We carry genuine Therma-Tru parts when regional suppliers can get them fast, and we’re just as comfortable installing quality aftermarket rollers, sweeps, and threshold caps when they match or beat OEM durability. Homeowners near Willow Glen know our crew for showing up in the window we gave and leaving the jobsite cleaner than we found it. On every Therma-Tru job in Mountain View, you get the Therma-Tru sales & service experience backed by our 365-Day Done Right Promise: if the work isn’t right, we come back and fix it at no charge.
Common Therma-Tru Windows & Doors Problems We Solve in Mountain View
- Sweating and rust on steel-frame trim components. Mountain View’s marine layer rolls in most evenings and sits on door hardware until mid-morning. On Therma-Tru entry doors with steel trim at the threshold or sidelight channels, that condensation collects in the bottom corners and starts pitting. We see it constantly in ranch homes closer to the bay side of Mountain View.
- Slider rollers loaded with fine grit and moisture. Therma-Tru Slim-Line patio doors in Monta Loma and Rex Manor pick up decades of dust, fog condensation, and worn roller debris until the door drags or jumps track. The fix is usually a roller replacement and track cleaning, but if the bottom rail is spongy we’ll tell you straight before ordering parts.
- Hairline cracks at lower frame corners. Mountain View’s 1960s post-and-beam ranch additions shift more than people expect. Stucco settles, the rough opening torques, and a Therma-Tru frame corner with a hairline crack starts letting evening air through. Patching works for a season; a frame replacement works for decades.
- Flattened compression gaskets around entry door panels. Therma-Tru entry doors use compression gaskets to seal against the panel. After years of cool, damp marine air, those gaskets harden and stop rebounding. The door looks fine but drafts every evening. We stock replacements for most Therma-Tru Classic-Craft and Smooth-Star models.
- Fogged dual-pane glass in Therma-Tru patio doors. Seal failure shows up as condensation between the panes that never dries. In Mountain View’s mild but damp climate, this happens even without extreme temperature swings. We can replace the glass unit in many Therma-Tru patio doors without tearing out the whole frame.
Therma-Tru Service in Mountain View: What Local Conditions Mean for Your Equipment
Here’s the Mountain View-specific insight we’ve learned from years of service calls: the Monta Loma and Rex Manor tracts still carry original thin-frame aluminum sliders from the 1960s, and when homeowners swap those out for Therma-Tru Slim-Line or French door systems, the retrofit almost always ends up replacing the entire opening, which is why our Window Installation in Mountain View includes full reframing. The original rough openings on those homes are too shallow for modern insulated frames. A Therma-Tru Slim-Line slider with dual-pane low-E glass needs a deeper pocket than a 1963 aluminum frame, and if you try to force it, the frame flexes and the rollers bind within a year. We reframe the opening properly and cap the exterior so the stucco edge looks cleaner than the day the house was built. That’s the difference between a door that slides for twenty years and one that starts dragging by Thanksgiving. In a Rex Manor rambler, we pulled a seized Therma-Tru BenchMark slider where the bottom track had corroded into a crusty groove and the rollers had ground flat. We reframed the rough opening, dropped in a new Slim-Line slider, and the homeowner told us the foggy evenings finally stopped leaking cold through the door.
Our service area covers all of Mountain View service area, including the Eichler tracts, ranch neighborhoods, and newer townhome communities near Castro Street and El Camino Real.
Therma-Tru Models & Products We Service in Mountain View
We service the full Therma-Tru lineup you’ll find in Mountain View homes. That includes Therma-Tru Classic-Craft entry doors with their fiberglass panels that mimic wood grain, Smooth-Star fiberglass entry doors, Slim-Line sliding patio doors, and BenchMark builder-series doors. We use genuine Therma-Tru parts when regional suppliers can get them quickly, and we’re honest about when an aftermarket roller, sweep, or threshold cap will outlast the OEM part. If a Therma-Tru sightline or panel has cracked at the corners or the bottom rail feels spongy when you press on it, we’ll tell you straight when a full frame replacement beats another patch job. We stock common rollers, sweeps, gaskets, and threshold caps for fast Mountain View turnaround, and we order model-specific parts the same day we diagnose the problem.
Therma-Tru Service Pricing in Mountain View
Most Therma-Tru door adjustments like hinge tightening, gasket replacement, and threshold cap swaps run $145 to $320. Slider roller replacement on a Therma-Tru Slim-Line typically falls between $220 and $440 depending on whether the track needs resurfacing. A glass unit replacement in a Therma-Tru patio door usually runs $380 to $750 installed. Full frame replacements with reframing work, like the Monta Loma jobs that need a deeper rough opening, start around $1,400 and go up from there based on the door style and trim work involved. Every estimate includes a written line-item price before any work starts, so you know the exact number when we walk the job, not after we’ve started cutting. Call (669) 333-7786 for a free estimate and we’ll put the numbers in writing.
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 – Therma-Tru Windows & Doors in Mountain View
Evening marine air keeps door hardware damp for hours, and combined with the weight of a solid Therma-Tru Classic-Craft panel, hinge screws slowly back out of the jamb. We re-seat the hinges with longer screws into the framing, reinforce the hinge mortises if needed, and the sag stops. If the jamb itself has softened from years of moisture, we’ll tell you before quoting a repair. Call (669) 333-7786 and we’ll take a look.
In most Monta Loma homes, no, and here’s why: the original 1960s rough openings are too shallow for a modern Therma-Tru French door system, which needs a deeper pocket for the hinges, sill, and insulated frame. We can reframe the opening without touching the rest of the wall, and the exterior gets capped so it looks intentional rather than patched. It adds a day to the job but the door actually works when we leave. Call (669) 333-7786 for a free estimate on your specific opening.
The Therma-Tru Smooth-Star fiberglass door with a flush panel and a mid-century friendly color is the most common choice we recommend. It gives you the clean lines of the original ranch-style door without the warping and drafts. For Eichler homes with more glass, a Classic-Craft door with a narrower sightline often blends better with the post-and-beam aesthetic. Come by our showroom or call (669) 333-7786 and we’ll show you samples side by side.
Yes, mostly because of the marine layer. Mountain View’s cool, damp evenings mean track channels collect moisture and fine grit faster than drier inland cities, and the rollers on a Therma-Tru Slim-Line need cleaning and lubrication about twice a year here. The gaskets also harden faster from repeated damp-dry cycles. It’s a fifteen-minute maintenance routine, and we’re happy to show you how during a service visit.
In most cases, yes, we can replace just the insulated glass unit without pulling the whole Therma-Tru frame. The exception is when the frame itself has cracked at the corners or the bottom rail has gone spongy from moisture. We’ll tell you which situation you have after a quick look. Call (669) 333-7786 for an exact quote, and you’ll get the number in writing before we order a single part.
Service Areas Near Mountain View
Westlight Windows San Jose serves Mountain View and the surrounding Bay Area communities. If you’re in Therma-Tru service in San Jose, we cover neighborhoods from Willow Glen to Almaden Valley. We also handle Therma-Tru service in Fremont, plus Sunnyvale, Cupertino, and Woodside. Wherever you are in the South Bay, we’ll show up in the window we gave.
Book Your Therma-Tru Service in Mountain View Today
If your Therma-Tru door is dragging, fogging, or drafting in Mountain View, call (669) 333-7786. We’ll schedule a free estimate, walk the job with you, and put the price in writing before any work starts. A window should keep the weather out and stay out of your way, everything else is just details.
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.