Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Big Bear Lake, CA
Big Bear Lake window and door work is not like the work we do anywhere else in Southern California. At 6,752 feet, with 60 to 100 inches of annual snowfall and hard freeze-thaw cycles, the original single-pane aluminum sliders and hollow-core cabin doors on most 1950s to 1980s homes fail in ways that no lower-elevation contractor ever sees. Westlight Windows & Doors handles window replacement, window installation, and door installation specifically for this mountain climate. If you’re wondering whether your cabin’s windows or doors will make it through another winter, call us at (903) 354-7134 for a straightforward assessment.
Why Big Bear Lake Homes Are Different
Big Bear Lake’s housing stock is dominated by wood-frame A-frame and chalet-style cabins built between the 1950s and 1980s, most of them originally weekends-only ski cabins. These homes shipped with single-pane aluminum horizontal sliders and builder-grade exterior doors with minimal weatherstripping. The builders never intended them for full-time living. Now that so many are converting to year-round occupancy and short-term rentals, the original assemblies are being asked to do a job they were never designed for.
The climate makes it worse. Repeated freeze-thaw cycles through late fall, winter, and early spring cause glazing seals to delaminate, vinyl and aluminum frames to rack, and door sill pans to heave. Intense high-altitude UV on south- and west-facing elevations accelerates seal degradation and frame oxidation faster than manufacturers’ standard warranties anticipate. California’s Title 24 Climate Zone 16 designation for Big Bear Lake mandates window U-factors far more stringent than what’s required just 30 miles downhill in San Bernardino, so code-compliant replacement windows here are an obligation, not an upgrade option. We’ve also found that snow loading on the shallow overhangs common to older Big Bear cabins regularly twists rear and side entry door frames out of square, which means door frame re-squaring and threshold replacement becomes a near-routine part of cabin door work here, a scope item that almost never appears on jobs down the mountain in Yucaipa or Redlands.
Our Main Big Bear Lake Services
The three jobs Big Bear Lake homeowners call us about most are replacement, installation, and door work, and each has its own dedicated page with local pricing and specifics.
Window Replacement in Big Bear Lake
Replacing original single-pane aluminum sliders in a Big Bear Lake cabin means pulling frames that have been racked by decades of freeze-thaw movement and often finding the rough openings out of square. We carry impact-rated PGT and CGI lines for homes on exposed ridgelines and energy-efficient ECO Window Systems for cabins where heating costs run high all winter. Every replacement includes low-e glass, a thin coating that reflects heat back into the room in winter and out in summer, and the written price comes before any work starts. Window Replacement in Big Bear Lake covers full local pricing.

Window Installation in Big Bear Lake
New window installation in Big Bear Lake often means new-construction flanges on additions or remodels, not just retrofit inserts into existing frames. The building envelope here has to handle real snow load and wind, so we pay extra attention to flashing, sill pans, and air sealing. On a recent job near Moonridge, the original installation had no sill pan at all, which is a direct path to rot once snow melts and refreezes against the frame. Window Installation in Big Bear Lake explains what full installation includes.

Door Installation in Big Bear Lake
Entry doors in Big Bear Lake cabins take a beating: snow piled against the threshold, freeze-thaw heaving, and frames twisted out of square by snow loading on shallow overhangs. We install Therma-Tru entry systems with proper weatherstripping and threshold pans built for actual winter, and we re-square frames as part of the job when needed. A door that doesn’t seal in January is a heating bill problem and a security problem at the same time. Door Installation in Big Bear Lake has the full scope and pricing.

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 Big Bear Lake
We install eight manufacturer lines and we match the brand to the job rather than forcing every home into one product. For Big Bear Lake specifically, we lean on PGT and CGI for impact-rated work on exposed elevations, ECO Window Systems for high-efficiency glazing, and CWS for well-priced slider replacements. Parts for common repairs are stocked at our Inland Empire warehouse, so mountain jobs don’t wait on long lead times. Our brands page lists the full lineup.
Pricing for Window Company in Big Bear Lake, CA
| Service | Typical Range in Big Bear Lake |
|---|---|
| Single window replacement (standard vinyl, installed) | $700 - $1,400 |
| Aluminum slider to dual-pane vinyl conversion | $900 - $1,800 per window |
| Impact-rated window (PGT or CGI) | $1,300 - $2,600 per window |
| Full cabin window replacement (6-10 windows) | $9,000 - $22,000 |
| Standard entry door with frame re-squaring | $2,200 - $4,500 |
| Therma-Tru fiberglass entry system | $3,000 - $6,500 installed |
| Sliding glass door replacement | $2,500 - $5,000 |
| Threshold and sill pan replacement | $600 - $1,500 |
What pushes the price up in Big Bear Lake is frame re-squaring, rotted rough-opening repair, and the extra flashing and air-sealing work the climate demands. Snow and ice don’t forgive shortcuts, and we don’t take them. You get a written line-item price before any work starts, and that price does not change at the door.
Neighborhoods We Serve in Big Bear Lake
We cover the entire Big Bear Lake area, including the neighborhoods and pockets where cabin construction varies most. Crews come up from the Inland Empire office and run jobs across the whole basin, typically completing most single-window or single-door jobs in one day on site.
- Moonridge
- Boulder Bay
- Fawnskin
- Sugarloaf
- Fox Farm – Big Bear City boundary area
Service Area – Cities Near Big Bear Lake
Our crews also serve neighboring mountain and high-desert communities around Big Bear Lake, including Big Bear City, CA, Running Springs, CA, Lucerne Valley, CA, and Mentone, CA. If you’re on the mountain or just below it, call us and we’ll tell you honestly whether we cover your address.
Serving Big Bear Lake, CA - Our Local Coverage Area
We’re based in the Big Bear Lake 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 Big Bear Lake
We schedule mountain jobs in blocks so we’re not driving a single crew up for one small repair. Most Big Bear Lake appointments run within one to two weeks of your call, and you’ll get a real arrival window, not a four-hour guess. Call (903) 354-7134 to check current mountain scheduling.
Permit requirements depend on scope and whether the job touches structural openings. Many direct replacements don’t require one, but if yours does, we pull the permit and handle the inspection. We’ll tell you at the estimate what applies to your specific home.
Yes. Several Big Bear Lake HOAs and the short-term rental ordinances have rules about materials, finishes, and sometimes even glazing types. We work with the specs your HOA or rental compliance office gives us and make sure the installed product passes. If you have written HOA requirements, bring them to the estimate.
Winter work on the mountain is doable but slower. We won’t install in active snowfall or when temperatures drop below the adhesive and sealant ratings, because the work would fail and that’s not worth it to either of us. We schedule winter Big Bear Lake jobs around weather windows and let you know the day before if we need to shift.
If your Big Bear Lake windows or doors are letting the mountain in, call Westlight Windows & Doors at (903) 354-7134. We’ll give you a written price, show up when we said we would, and stand behind the work in writing. The estimate is free.
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 Big Bear Lake 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










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