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 Door Installation: The San Jose Owner’s Guide
Therma-Tru door installation in San Jose typically runs $450 – $1,400 for a full frame-and-slab swap, and most jobs are completed in one day. We stock Therma-Tru-compatible hinges, sweeps, weatherstripping, and threshold kits on our trucks, so a failed seal or sagging slab rarely means waiting on a parts order. The usual call starts the same way: a door that suddenly drags on the threshold, an air leak you can feel standing three feet back, or a sweep that’s torn loose from constant sun and use.
Most owners discover the problem by accident. A door that won’t latch cleanly, light poking through the weatherstrip on a sunny San Jose afternoon, or a threshold that’s worn to bare aluminum. By the time it fails outright, the fix is usually faster than people expect.
Which Therma-Tru Models This Applies To
We install and match parts across Therma-Tru’s full residential line: Classic-Craft, Fiber-Classic, Smooth-Star, Pulse, and the Benchmark door systems. Each series uses a different slab construction, which matters when you’re matching trim or replacing a hinge. Classic-Craft doors are compression-molded fiberglass with a dense polyurethane core, and they take standard hinges with non-removable pins. Smooth-Star uses a lighter fiberglass skin over a wood-composite frame, so we check hinge screw length carefully to avoid stripping. Pulse doors are the newest line, and they use adjustable hinges on many models as a factory feature.
The quickest way to identify your door is the sticker on the hinge-side edge of the slab. Therma-Tru stamps every door with a model number and a build date. If the sticker’s gone, measurements work: a standard entry slab is 36 inches by 80 inches, but double doors, 42-inch entries, and custom heights from 96-inch slabs all exist. Getting the swing right (in-swing vs out-swing) matters more than people assume. We install OEM Therma-Tru parts when the warranty matters or the finish needs to match exactly. For hinges and sweeps, quality aftermarket equivalents from Stanley or Pemko often hold up just as well, and we’re honest about where the difference is real. Therma-Tru does not authorize us, and we are not affiliated with the company. We’re an independent San Jose installer who carries their product because it’s genuinely good.
Signs Your Therma-Tru Door Installation Is Failing
- Sagging slab that scrapes the threshold. The top hinge screws have loosened or the hinge itself has worn. Fiberglass doors are lighter than steel, so when they sag, it’s usually hinge hardware, not the slab. A 3-inch screw into the rough opening framing fixes most cases on the first visit.
- Visible daylight around the weatherstrip. The compression seal has flattened or torn. San Jose’s dry summers bake rubber seals until they lose their rebound. When light gets through, conditioned air gets out, and your AC bill climbs with it.
- Threshold worn to bare metal or cracked. High-traffic entries grind through the thermal cap in five to seven years. Once water and dirt get under the cap, the aluminum starts corroding and the seal fails in the corners first.
- Draft you can feel with the door fully latched. The slab isn’t seating evenly against the jamb, or the corner pads are compressed. This is the installation failure people live with longest because it’s invisible. In Willow Glen and Almaden Valley, where homes sit under mature tree cover, damp winters make the draft easier to spot.
- Latch or deadbolt that won’t line up. Seasonal movement in the rough opening shifts the strike plate a few millimeters. A quick adjustment usually fixes it, but if the door has shifted repeatedly over two seasons, the rough opening itself may need shim correction.
Replacement Cost & What’s Included
Here’s where your money goes on a typical Therma-Tru door installation in San Jose:
| Service | Typical Range (Installed) |
|---|---|
| Weatherstrip replacement (full perimeter) | $90 – $180 |
| Threshold replacement (adjustable, thermal-break) | $180 – $320 |
| Hinge replacement or screw correction (3 hinges) | $120 – $240 |
| Full slab replacement (fiberglass, standard entry) | $450 – $1,100 |
| Full frame-and-slab replacement (tear-out included) | $900 – $1,400 |
Every price above is parts and labor together. What varies the final number: door size, whether the jamb needs re-shimming, and whether you want a multipoint lock added while we’re in there. A standard Smooth-Star slab that’s still square and true often just needs a new sweep and threshold, which keeps the bill under $500. You get your written price before any work starts, and we don’t revise quotes at the door. The workmanship carries the Kingswell Guarantee, and if something fails within 365 days, we come back and fix it at no charge.
DIY or Call Us?
If the sweep is torn and the screws are visible, a homeowner can replace that in 20 minutes with a screwdriver. Adjustable thresholds are also approachable for someone comfortable with a drill. The line we draw is hinge work and full slab swaps: a fiberglass door is heavy, the rough opening tolerances are tight, and a door that isn’t squared to the jamb will eat its own weatherstripping in three months. If the slab itself is damaged or the frame has shifted, call a pro. One wrong cut on a frame replacement turns a $500 job into a $1,400 door that doesn’t quite close. We’ve seen it enough times to say it plainly. For hinge adjustments, sagging slabs, or anything involving the rough opening, call us at (669) 333-7786 and we’ll take a look during a free estimate.
FAQs
Five to seven years, on average. San Jose’s dry summers and roughly 300 sunny days a year bake the rubber until it loses its compression set. Coastal-adjacent neighborhoods with morning fog get a year or two more.
Yes, in most cases. A sag is almost always hinge wear or loose screws, not a bad slab. We correct the screws, realign the hinges, and reset the strike plate for $120 – $240. Replacement is only necessary when the slab itself is cracked or the rough opening has rotted or shifted.
A weatherstrip and threshold refresh takes under an hour. A full slab replacement runs 2 to 4 hours. A full frame-and-slab tear-out with new trim is a full workday, typically 6 to 8 hours.
Yes. We carry standard 36-inch sweeps, compression weatherstrips, adjustable thresholds, and hinge sets on every truck. Odd-size doors or special finishes may take 3 to 5 business days to source, and we’ll tell you that before you commit to anything. Call (669) 333-7786 with your door measurements and we’ll confirm what’s on hand.
Owen Satterfield grew up in the San Fernando Valley and learned residential construction working summers with his uncle before finishing the building trades program at Los Angeles Trade-Technical College. He’s spent the better part of two decades installing and replacing windows and doors, and homeowners near Willow Glen know his crew for showing up on time and leaving the job site cleaner than they found it. “A window should keep the weather out and stay out of your way. Everything else is just details.”
Written by Owen Satterfield, Owner, Westlight Windows San Jose at Westlight Windows San Jose, serving San Jose and nearby areas.
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.