New windows and doors improve comfort, cut energy bills and add long-term value to your home. Westlight Windows Riverside 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 Montclair, CA
Window and door work in Montclair, CA comes down to two things: the age of the housing stock and the way the inland heat and Santa Ana winds punish older frames. Most homes here were built between the 1950s and 1970s, and many still carry their original aluminum sliders or single-pane wood windows. That means seal failure, warped tracks, and drafts that show up on the first cold night of the year. We’re Westlight Windows & Doors, an independently owned and operated Kingswell location, and we handle replacement and installation work across Montclair with written pricing before any job starts. Call (760) 624-3669 for a free estimate.
Why Montclair Homes Are Different
Montclair’s pre-1970s ranch and mid-century homes, concentrated east of Central Avenue, often have original wood-frame windows with single-pane glass and failing aluminum sliders. The summers here are hot and dry, and the Santa Ana winds arrive with enough force to rattle loose sashes and drive dust through worn weatherstripping. Add in cool winter nights and you get constant expansion and contraction, which is why we see higher rates of seal failure, cracked glazing, and air infiltration in Montclair than in newer areas to the west.
The stucco exteriors and limited eave overhangs common to these 1950s and 1960s tract homes accelerate sun and moisture damage on window frames. In the neighborhoods north of the 10 Freeway, you can spot original 1960s aluminum sliders from the street: they’re the ones with white oxidation along the bottom track and a slight rattle when the wind kicks up. Retrofit replacement into the existing stucco opening is almost always the right call here, and it’s work we do regularly across Montclair.
Our Main Montclair Services
The two calls we get most from Montclair homeowners are for replacement and installation, and each has its own dedicated page below with local pricing and details.
Window Replacement in Montclair
Replacing windows in Montclair usually means pulling out original aluminum sliders or single-pane wood sashes and fitting a measured retrofit into the existing stucco opening. The hot, dry summers and Santa Ana wind events here mean we pay close attention to seal integrity and frame squareness, because a window that’s slightly out of plumb in a 1960s tract home will leak air no matter how good the glass is. We carry eight manufacturer lines, including impact-rated PGT and energy-efficient ECO Window Systems. Read more on our Window Replacement in Montclair page.

Window Installation in Montclair
New window installation in Montclair often comes up during additions, remodels, or when a homeowner wants to switch from a fixed pane to a venting window. The stucco exteriors common here require careful flashing detail so moisture doesn’t work its way behind the frame during winter rains. We match the installation to the home’s construction, confirm the opening is square before ordering, and put every price in writing before the first cut. Learn about our process on the Window Installation in Montclair page.

Door Installation in Montclair
Entry and patio door installation in Montclair has to account for the same heat and wind that punish windows. Doors on stucco homes need proper threshold support and weather sealing, and older Montclair houses often have out-of-level openings that make a standard slab door a poor fit. We install Therma-Tru entry doors and handle everything from a front door swap to a sliding patio door retrofit. Details are on our Door Installation in Montclair 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 Montclair
We install products from eight manufacturer lines, so we can match the right product to the home rather than forcing one brand onto every job. In Montclair we frequently recommend ViewLux for sliding doors, PGT for impact-rated openings, and CWS for energy-efficient window packages. Parts for these lines are readily available, which keeps turnaround tight. See the full list on our brands page.
Pricing for Window Company in Montclair, CA
| Service | Typical range in Montclair |
|---|---|
| Single window replacement (retrofit) | $600 – $1,200 installed |
| Double-pane window replacement | $850 – $1,600 installed |
| Full frame window replacement | $1,400 – $2,900 installed |
| Sliding glass door replacement | $1,800 – $3,500 installed |
| Standard window installation (new opening) | $900 – $2,100 installed |
| Patio door installation | $1,900 – $3,800 installed |
| Entry door installation (single) | $1,200 – $2,600 installed |
| French door installation | $2,200 – $4,500 installed |
| Stucco patch and trim around new opening | $300 – $700 |
| Impact window replacement (PGT/CGI) | $1,100 – $2,400 installed |
What pushes a Montclair job toward the high end is usually stucco repair around the opening, water damage hidden behind an old frame, or upgrading to impact-rated glass for wind-driven debris. Whatever the number, you get it in writing before any work starts: the Kingswell Guarantee means no revised invoices at the door. Call (760) 624-3669 for a free estimate with exact pricing.
Neighborhoods We Serve in Montclair
Our crews work throughout Montclair, including the older ranch and mid-century pockets where retrofit work is most common.
- North of the 10 Freeway (original 1960s tract homes)
- East of Central Avenue (pre-1970s ranch homes)
- Monte Vista area
- Kingsley neighborhood
- South Montclair near the Chino border
Most Montclair estimates are scheduled within a few days, and our phone lines are answered by a live person 24/7, not a voicemail box.
Service Area – Cities Near Montclair
If you’re just across the city line, we also serve Ontario, CA, Chino, CA, Norco, CA, and Rialto, CA. Scheduling is coordinated from our Inland Empire office, and our crews serve Montclair locally.
Serving Montclair, CA - Our Local Coverage Area
We’re based in the Montclair 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 Montclair
We typically schedule estimates within a few business days. Our phone lines are answered by a real person 24 hours a day, 7 days a week, so you can call (760) 624-3669 any time to book a visit or ask a question. There’s no charge for the estimate, and the written price is yours to keep.
Most like-for-like retrofit replacements don’t require a city permit, but some Montclair HOAs have design review rules for visible changes. If your HOA requires approval, we can provide the product specs and drawings they need. We’ll flag any permit questions during the estimate.
We serve all of Montclair, from the older tracts north of the 10 Freeway to the neighborhoods along the Chino border. If you’re unsure whether your address is in our service area, call (760) 624-3669 and ask. The person who answers will tell you straight.
If you’re ready to get a written price for window or door work in Montclair, call (760) 624-3669 today. Estimates are free, and the price we give you before the work starts is the price you pay when it’s done.
Six Reasons Homeowners Choose Westlight Windows Riverside
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 Riverside Services
What Neighbors Say About Westlight Windows Riverside
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 Montclair 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"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"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