Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Windows & Doors Services in Fairfax, CA
If your windows fog between the panes or your back door sticks every winter, you already know Fairfax treats houses differently than the rest of Marin. The redwood-shaded canyon air in 94930 keeps moisture against wood sashes and door frames for months at a time, so rot and seal failure show up early and often. TruePane Windows & Doors works in Fairfax regularly, and our crews know the hillside access issues and WUI fire-code questions before we even pull up. Call (888) 635-0804 and a live person answers, day or night.
Key Takeaways:
- Fairfax homes sit in a damp canyon microclimate that accelerates window and door frame rot compared to San Anselmo or Kentfield.
- Much of 94930 falls inside a CAL FIRE Very High Fire Hazard Severity Zone, so permitted replacements often require fire-resistant glazing.
- TruePane registers both manufacturer warranty layers in writing before the truck leaves your driveway.
- Every job carries the Done Right Promise. If it is not done right, we fix it. No paperwork fights.
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.
Why Fairfax Homeowners Choose TruePane Windows & Doors
TruePane was founded in 2008 by second-generation glazier Dale Kessler, who started the company with one rule on the whiteboard: if the pane is not true, the job is not done. That is the standard our crews carry into every home in Fairfax, whether the job is a single rotted sill on Bolinas Road or a full replacement on a cottage above Deer Park. We hold a 5-star reputation across Marin because we show up when we say, measure every opening twice, and put manufacturer quotes side by side on paper so you see exactly what you are buying.
You will find our work on craftsman bungalows in the flats near downtown and on hillside cabins off Sir Francis Drake Boulevard. Homeowners in the Cascade Canyon area and around the Meadow Club know us as the company that registers both warranty layers in writing and stands behind the install for 90 days with no fine print. Dale Kessler still insists on background-checked, uniformed technicians on every job, the same way he would send someone to work in his own mother’s house. That is not marketing language. It is how we have kept the phone ringing since 2008 of combined glazing heritage.
Windows & Doors Services We Offer in Fairfax
Window Installation in Fairfax
New windows in Fairfax need to handle canyon dampness and WUI fire-code requirements at the same time. We set every unit true, flash the rough opening correctly, and register your manufacturer warranty before we leave.
Learn more about our Window Installation in Fairfax.

Door Installation in Fairfax
Doors on Fairfax hillsides rack and swell from seasonal moisture, so the rough opening preparation matters as much as the door itself. We install entry doors, interior doors, and exterior door assemblies that close square and stay square.
Learn more about our Door Installation in Fairfax.

Window Replacement in Fairfax
Replacing original single-pane sashes on 1920s and 1950s cottages is our bread and butter in Fairfax. We handle delivery up narrow canyon roads, remove old frames without wrecking the interior trim, and set the new units to spec.
Learn more about our Window Replacement in Fairfax.

Impact Windows & Doors
Impact-rated glass from manufacturers like PGT and CGI makes sense for Fairfax homes facing wildfire ember risk and hillside exposure. These assemblies meet California WUI standards and give you a fire-resistant barrier that standard vinyl windows do not provide.

Energy-Efficient Windows
Fairfax winters stay damp and cool, and the fog layer means low solar heat gain is often more important than it is over the hill in San Rafael. We quote Energy Star-rated lines so you can compare glass packages honestly, side by side.

Sliding & Patio Doors
Deck-facing sliders on hillside homes take a beating from redwood canopy drip and morning marine fog. We replace worn rollers, rebuild swollen frames, and install new aluminum or vinyl sliders that open with one hand.

Glass Railing Systems
For hillside decks and stairways in Fairfax, glass railings keep the canyon view unobstructed and meet Marin County deck-loading requirements. We fabricate and install custom tempered glass railing systems to measured site conditions.

Custom Windows & Doors
Older Fairfax cabins rarely have square, standard openings. We build custom window and door packages for non-standard rough openings, including porthole windows, arched tops, and specialty glass for historic bungalow styles.

Neighborhoods We Serve in Fairfax
TruePane runs crews into every part of 94930, from the level streets near downtown and the Fairfax Theatre to the steep, narrow switchbacks above Cascade Canyon and the shaded lanes near Deer Park. Typical area response is same day for urgent issues like a broken pane or a door that will not latch.
- Downtown Fairfax
- Cascade Canyon
- Deer Park
- Bolinas Road corridor
- Sir Francis Drake Boulevard area
Why Fairfax’s Climate & Housing Affect Windows & Doors
Fairfax sits at the bottom of a redwood-shaded Ross Valley canyon. That geography creates one of Marin County’s persistently dampest residential microclimates. Marine fog and redwood canopy drip keep exterior wood surfaces wet for much of the year, which is why original wood-sash windows and door frames on 1920s to 1950s cottages rot far faster here than a mile east in San Anselmo or Kentfield. We regularly see glazing seals fail prematurely, wood sills rotting at the base, and door frames swelling and racking seasonally in Fairfax homes that would show none of those symptoms on the flatland in San Rafael.
At the same time, the town’s location near Cascade Canyon and surrounding wildlands puts most of 94930 within a CAL FIRE Very High Fire Hazard Severity Zone. Permitted window and door replacements in those mapped areas must meet California’s WUI fire-resistant glazing and door assembly standards. That means a standard vinyl replacement window that passes energy code may still fail fire-resistance requirements, forcing specification changes to fire-rated or tempered glazing assemblies mid-project. It is a dual challenge of moisture-driven failure and fire-code compliance that is unique to this canyon address. Neighbors one canyon over may never encounter it. We deal with it every week.
Pricing for Windows & Doors in Fairfax
There is no honest single price for a window or door in Fairfax, because the canyon conditions and code requirements vary from street to street. As a reference, expect standard replacement windows to start around $800 to $1,400 per opening installed, while fire-rated or impact-rated units required in the Very High Hazard zone typically run $200 to $500 more per window. Entry door replacement generally ranges from $1,800 to $4,500 depending on material and hardware. Custom units for non-standard openings on older cabins always carry a premium. We give free, written, line-item quotes and we honor them. No surprise change orders at the end of the job. Call (888) 635-0804 and we will walk the site and give you real numbers on paper. Seniors and veterans get a permanent 5% discount, and any repair over $250 is currently $50 off.
Service Area - Cities Near Fairfax
TruePane serves Fairfax and the surrounding Ross Valley communities. If you have family or property in San Anselmo, Kentfield, San Rafael, or Larkspur, we run crews there regularly too, with the same Done Right Promise and warranty registration in writing.
Serving Fairfax, CA - Our Local Coverage Area
We’re based in the Fairfax 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 Windows & Doors in Fairfax
Window replacement in Fairfax typically runs $800 to $1,400 per opening for standard units, with fire-rated or impact glazing required in the WUI Very High Hazard zone adding $200 to $500 more per window. The final number depends on access, rough opening condition, and whether the existing frame can be salvaged. Call (888) 635-0804 for a free written quote, and ask about the 5% discount for seniors and veterans.
If your home sits in a CAL FIRE Very High Fire Hazard Severity Zone, as much of 94930 does, then yes, permitted window and door replacements must meet California WUI fire-resistance requirements for glazing and door assemblies. Some homes closer to the valley floor may be exempt, but many hillside parcels near Cascade Canyon are mapped inside the zone. We check the Town of Fairfax building department maps and quote compliant assemblies from the start so you avoid the mid-project specification change that catches other contractors by surprise.
Yes, we do it regularly on 1920s to 1950s craftsman bungalows and hillside cabins. The honest answer is that some interior trim gets brittle after decades of canyon moisture, and we may need to replace a stop or two, but our crews are trained to preserve original casing and period details wherever possible. We measure every opening twice and build custom units for non-standard rough openings, so the new window fits the house instead of the other way around.
Fogging means the glazing seal has failed, and Fairfax’s redwood-shaded canyon microclimate accelerates that failure. The chronic dampness and temperature swings between the valley floor and the surrounding wooded slopes put constant stress on dual-pane seals. Once the seal goes, the insulating gas escapes and condensation forms between the panes. The repair is a new insulated glass unit or a full window replacement. Call (888) 635-0804 to have us inspect it, and we will tell you straight whether a seal replacement will hold or whether the sash is too far gone.
No. TruePane gives written, line-item quotes and honors them. If we find hidden rot or a rough opening that is out of square once the old window is out, we stop and show you exactly what is there before we do anything else. The only number on your final bill is the number you approved. That is the square deal we have worked under since Dale Kessler founded the company, and the Done Right Promise backs the work after the bill is paid. Call (888) 635-0804 to schedule a free estimate.
Contact TruePane Windows & Doors in Fairfax
We answer the phone live, 24 hours a day, seven days a week. When you call (888) 635-0804, a person picks up, not a voicemail tree. Tell us what is happening with your windows or doors and we will schedule a free estimate at a time that works for you. The quote is written, the warranty layers are registered in writing, and the work is done right the first time. If the pane is not true, the job is not done.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Fairfax and Marin County.
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 Fairfax Customers Say
"Impact windows on the whole house. They handled the permit, the inspection, and gave me a folder with every approval number for the insurance company. My windstorm premium dropped enough to notice."
- Bill T."Whole-house window replacement at 71 years old is not something you want to do twice. Dale walked the house himself for the quote. Crew was the same three men all four days, and the foreman knew every window by room."
- Pat and Ray L."Eleven windows replaced in two days. The crew chief, Marcus, showed me the level on every single frame before they caulked it. My wife noticed the street noise was gone before I did."
- Ronald P.



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