Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterWindow Company in Kentfield, CA
Window and door work in Kentfield is shaped by one hard fact: this is one of the wettest places in the Bay Area, averaging over 50 inches of rain a year. That moisture works its way into wood sills, door jambs, and old window frames faster than almost anywhere else in Marin. We’re Westlight Windows & Doors, an independently owned and operated Kingswell location, and we approach every Kentfield job with that weather in mind from the first walk-through. Call us at (903) 354-7134 for a free estimate.
Why Kentfield Homes Are Different
Kentfield sits in a Ross Valley microclimate that funnels Pacific storm moisture directly between the Tamalpais ridge and the hills above San Anselmo. The result is sustained fog drip, high ambient humidity, and heavy seasonal rain that causes wood window sills and door thresholds to rot from the outside in. Door slabs swell in winter and stick against their frames, weatherstripping compresses and fails, and window seals break down years earlier than they would in Corte Madera just a few miles south.
The housing stock compounds the problem. Most Kentfield homes are upscale single-family builds from the 1940s through the 1970s, with a fair number of pre-war Craftsman bungalows mixed in. Many still have their original wood windows and wood-framed door assemblies, which have now endured decades of valley moisture. Homeowners here routinely ask for architecturally sympathetic replacements: clad-wood, fiberglass, or premium wood lines rather than basic vinyl. On the hillside edges above the College of Marin, west-facing and northwest-facing windows take simultaneous fog and wind-driven rain off the Tamalpais watershed, so frame rot and seal failure show up together. We flag that pattern on the initial walk-through because homeowners moving from drier Bay Area suburbs are often surprised by how fast it develops here.
Our Main Kentfield Services
Kentfield homeowners call us most often for two things: replacing windows that have failed from moisture exposure, and installing doors that no longer seal or swing true after years of seasonal swelling. Each service has its own dedicated Kentfield page with full pricing and process details.
Window Replacement in Kentfield
Window replacement in Kentfield usually means pulling out wood sashes that have rotted at the sill or lost their seal, then installing units sized to the existing rough opening so trim and interior casing stay intact. The moisture here makes frame material the first decision: clad-wood and fiberglass hold up far better than unclad wood or thin vinyl in the Ross Valley’s wet seasons. We carry eight manufacturer lines so the product matches the architecture and the exposure, not the other way around. Every replacement gets a written price before work starts, and a written guarantee when it’s done. Learn more on our Window Replacement in Kentfield page.
Window Installation in Kentfield
Window installation often accompanies a remodel or a failing retrofit, but in Kentfield it comes with a specific local wrinkle: proper flashing and sill pan detailing matter more here than in drier parts of the county. A window installed without the right moisture barrier in this microclimate will show water damage within a couple of wet seasons. We walk through the existing opening during the estimate to check for hidden rot in the rough framing, then quote the full scope in writing. The installation crew is background-checked and uniformed, and the site is left cleaner than we found it. Details are on our Window Installation in Kentfield page.
Door Installation in Kentfield
Entry doors in Kentfield swell and stick during the wet months, then shrink back in summer. That cycle wears out hinges, weatherstripping, and door sweeps, and it eventually compromises the jamb itself. Door installation here often starts with a rotted threshold or a jamb that has shifted out of square. We measure for the new door slab and the frame, correct any framing issues, and install products from lines like Therma-Tru that are built for wet, exposed entries. Every door job comes with the Kingswell Guarantee in writing. See Door Installation in Kentfield for specifics.
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 Kentfield
We install and service eight manufacturer lines, including PGT and CGI for impact-rated applications, CWS for custom wood and clad products, and ES Windows for modern aluminum and thermally broken designs. Parts for common repairs are stocked locally, which keeps most service appointments to a single visit. See our brands for the full line sheet.
Pricing for Window Company in Kentfield, CA
| Service | Typical Range in Kentfield |
|---|---|
| Single window replacement, standard size | $600-$1,200 installed |
| Single window replacement, large or custom size | $1,200-$2,500 installed |
| Full-home window replacement (10-15 windows) | $9,000-$22,000 installed |
| Clad-wood window replacement | $1,100-$2,200 per window installed |
| Fiberglass window replacement | $900-$1,800 per window installed |
| Impact-rated window replacement (PGT or CGI) | $1,300-$2,800 per window installed |
| New window installation in prepared opening | $400-$900 per window installed |
| Entry door replacement, standard single | $1,500-$3,500 installed |
| Entry door replacement with sidelights | $3,000-$7,000 installed |
| Sliding patio door replacement | $2,500-$5,500 installed |
| French door installation | $2,800-$6,000 installed |
| Rotted threshold or jamb repair (with door work) | $300-$900 added to door job |
Two things push pricing up in Kentfield more than anything else: rot repair in existing framing, and the upgrade to clad-wood or fiberglass that this climate genuinely calls for. Whatever the number, you get it in writing before any work begins. Westlight does not revise quotes at the door.
Neighborhoods We Serve in Kentfield
We work throughout Kentfield, from the flats near the College of Marin to the hillside streets above Sir Francis Drake Boulevard. Most Kentfield homes fall into one of the neighborhoods below, but if yours is a little outside the lines, call and ask. We schedule estimates across the Ross Valley each week.
- Kent Woodlands
- Murray Park / Kentfield hillside area
- Crown Road corridor
- Ross Valley flats near the College of Marin
- Upper Woodland / Goodhill area
Service Area – Cities Near Kentfield
Westlight is based in the Bay Area and serves Kentfield with local crews, so scheduling here is consistent with how we serve the surrounding Ross Valley towns. In addition to Kentfield, we regularly take on projects in nearby Larkspur, CA, San Anselmo, CA, San Rafael, CA, and Corte Madera, CA. If you live just outside Kentfield, call us to confirm coverage.
Serving Kentfield, CA - Our Local Coverage Area
We’re based in the Kentfield 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 Kentfield
Most Kentfield estimates are scheduled within a few business days, and we coordinate with our Kentfield-area crews to batch visits so the drive time isn’t built into your quote. We show up in the arrival window we give you, not a vague four-hour range. Call (903) 354-7134 to get on the schedule.
Basic replacement work that doesn’t change the opening size usually doesn’t need a permit in unincorporated Marin or in Kentfield, but anything structural, like widening a door rough opening or adding a new window where one didn’t exist, typically does. We handle the permit application when it’s required and pass inspection before we consider the job done. Calling (903) 354-7134 with your exact scope is the fastest way to know for certain.
Some Kentfield neighborhoods, particularly the hillside communities, have design review boards or CC&Rs that restrict window materials, colors, or door styles. We ask about HOA requirements during the first call, then spec products that match what the association has already approved. Getting that right up front avoids delays later. Call (903) 354-7134 and mention any HOA restrictions on your first call.
For a free, written estimate on any window or door work in Kentfield, call Westlight Windows & Doors at (903) 354-7134. A real person answers, any hour, any day.
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 Kentfield Customers Say
"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"Our sliding patio door had come off its track years ago and we just lived with it. New one is smooth as butter. They hauled off the old one and vacuumed up before they left."
- Jessica Landry