Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Window Company in Crestline, CA
Westlight Windows & Doors is an independently owned and operated Kingswell location handling window replacement, window installation, and door installation for homes across Crestline. Mountain work here is not valley work: a window or door at 4,500 feet has to hold up to snowmelt, freeze-thaw cycles, and California’s Very High Fire Hazard Severity Zone building code all at once. If your Crestline home still has original single-pane windows or a hollow-core exterior door, call (903) 354-7134 for a free estimate with a written price before any work begins.
Why Crestline Homes Are Different
Crestline’s housing stock runs heavily to A-frames, wood-framed bungalows, and cabins built from the 1940s through the 1970s as weekend getaways, then converted to year-round use without much thought to the weather. The original windows on these houses are usually single-pane aluminum or wood-frame units with non-standard rough openings. Door jambs rack out of square as the ground freezes and thaws. Sills rot where snowmelt sat against them for decades. A standard off-the-shelf replacement rarely drops in cleanly; the opening almost always needs reframing, flashing repair, or a custom size.
Then there is the fire code. Crestline sits inside the San Bernardino National Forest’s Very High Fire Hazard Severity Zone, so Chapter 7A of the California Building Code applies. That means new or replaced windows and exterior doors must be dual-pane with tempered or laminated glass and mounted in non-combustible or ignition-resistant frames. This is not an upsell. It is the law, and the San Bernardino County building department enforces it. We regularly see Crestline homeowners whose big-box vinyl single-pane windows got flagged at permit review because the unit was never Chapter 7A-compliant.
Our Main Crestline Services
Crestline homeowners call us most about two things: replacing failed windows and installing doors that actually close square after their first mountain winter. Here is what each job involves up here.
Window Replacement in Crestline
Window Replacement in Crestline usually starts with a rotted sill or an insulated glass unit whose seal failed after one too many freeze-thaw cycles. On Crestline’s older cabins, we measure the opening carefully rather than assuming a standard size, because many of these frames were built by hand. Every replacement we install meets Chapter 7A WUI requirements with dual-pane tempered or laminated glass and ignition-resistant framing. The written quote you get before work starts covers the permitting path, not just the glass.

Window Installation in Crestline
Window Installation in Crestline covers new-construction work and additions, where the opening is being framed for the first time rather than rebuilt. At this elevation, flashing details matter more than in the valley: snow that melts and refreezes against a poorly flashed window will find its way into the wall. We install dual-pane, Chapter 7A-compliant units with low-e glass as standard on Crestline projects, and every installation gets a written guarantee before we begin, not after.

Door Installation in Crestline
Door Installation in Crestline on a Crestline cabin is rarely a simple swap. Old hollow-core exterior doors have warped, the jambs have moved, and the threshold is often sitting directly on a slab that heaves with frost. We square the opening, replace rot where we find it, and install a door rated for mountain exposure. Like the windows, exterior doors in the VHFHSZ need ignition-resistant construction, and we handle that paperwork as part of the written quote you approve before work starts.

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 Crestline
We carry and install eight manufacturer lines, including PGT and CGI impact-rated windows, CWS, and ViewLux. That means we match the product to a Crestline home’s actual conditions, not to whatever happens to be on the truck. Parts and warranty support run through our brands network, so replacement hardware on a PGT or CGI unit does not leave a window boarded up for weeks.
Pricing for Window Company in Crestline, CA
| Service | Typical range in Crestline |
|---|---|
| Standard vinyl replacement window | $650 – $1,200 per window installed |
| Wood or aluminum-clad replacement window | $1,000 – $2,100 per window installed |
| Standard window installation (new opening) | $750 – $1,400 per window |
| Standard exterior door installation | $900 – $1,800 per door |
| Steel or fiberglass entry door | $1,500 – $3,000 installed |
| Patio or sliding glass door | $2,200 – $4,400 installed |
| Full-home window package (10–15 windows) | $8,000 – $20,000 installed |
| Permit fees and Chapter 7A compliance documentation | Varies by scope; itemized on the quote |
Prices in Crestline run higher than the valley floor for two honest reasons: the non-standard openings on older cabins and the mandated Chapter 7A glazing and framing. Whatever the number ends up being, it is in writing before any work starts, and it does not change at the door.
Neighborhoods We Serve in Crestline
We work throughout Crestline and the surrounding mountain communities, from the older cabin clusters near Lake Gregory to the tighter lots along the Highway 18 corridor. Response time for a scheduled estimate in Crestline is typically within a few business days, and we coordinate arrivals around mountain weather rather than pretending snow does not exist.
- Lake Gregory
- Cedar Pines Park
- Valley of Enchantment
- Rim of the World
- Skyland
Service Area – Cities Near Crestline
We also serve Crestline’s neighboring mountain and foothill communities, including Lake Arrowhead, CA, Running Springs, CA, and the valley communities of Highland, CA and San Bernardino, CA. Our dispatch and scheduling are coordinated from the Inland Empire office, with crews working locally in Crestline.
Serving Crestline, CA - Our Local Coverage Area
We’re based in the Crestline 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 Crestline
Yes, in most cases. Because Crestline sits inside the Very High Fire Hazard Severity Zone, the San Bernardino County building department requires Chapter 7A-compliant assemblies. We handle the permit application and documentation as part of your written quote. Call (903) 354-7134 and we will confirm what your specific project needs.
We schedule estimates in Crestline within a few business days, and our 24/7 live phone coverage means you can reach a real person to set that up rather than a voicemail box. Mountain weather occasionally shifts a schedule, but you will hear from us before we are late, not after.
No. The written price we give you before any work starts is the price you pay. If we uncover rot or a non-standard opening during the job, that is covered under the Kingswell Guarantee terms, not added as a surprise line item. Call (903) 354-7134 for a free estimate you can actually hold us to.
Ready to talk about your Crestline windows or doors? Call Westlight Windows & Doors at (903) 354-7134 for a free estimate and a written price. The Kingswell Guarantee applies to every job we do in Crestline: a written price before work starts, a committed arrival window, a clean job site, and a written guarantee handed to you when the work is done.
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 Crestline Customers Say
"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"Got quotes from three companies. Westlight wasn't the cheapest but they were the only one who measured everything carefully and put it all in writing. Worth it. No surprises on install day."
- Craig Dillard










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