Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Impact Windows & Doors Across Fairfax
Impact window and door replacement in Fairfax, California runs $1,850-$4,200 per opening for most canyon homes, and the job is done correctly only when the unit meets both Marin’s damp-canyon moisture reality and CAL FIRE’s WUI fire code. We know that sounds like two separate headaches. It is. And we deal with it every week from Cascade Canyon to the flats off Sir Francis Drake. Call (888) 635-0804 for a free in-home estimate, and we’ll walk you through exactly what your home needs and what it will cost on paper before any work begins.
Why TruePane Windows & Doors Is Fairfax’s Impact Windows & Doors Company
Fairfax is not San Rafael. It is not Kentfield. It sits at the bottom of a redwood-shaded Ross Valley canyon, where marine fog hangs until noon and redwood canopy drip keeps window sills wet for months at a time. Homes here, many built between the 1920s and 1950s, rot from the bottom up. We have been replacing those windows and doors long enough to know what fails first on a hillside cottage off Bolinas Road versus what holds up on a flat lot near Deer Park.
The homes we work on in Fairfax sit mostly inside a CAL FIRE Very High Fire Hazard Severity Zone. That fact changes the work. A standard vinyl replacement window can pass Title 24 energy code and still fail a Town of Fairfax building inspection because the glazing does not meet WUI fire-resistance requirements. We have pulled those permits. We have stood at the counter inside the building department on Sir Francis Drake and watched other contractors learn this for the first time. Our team, led by Dale Kessler, specifies units that pass both codes on the first submittal, because that is what a square deal looks like.
Background-checked, uniformed technicians measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers before the truck leaves your driveway. A live person answers our phone 24 hours a day, 7 days a week. When you call about a rotted sill or a door that binds in July, you get a person who knows Fairfax roads and will give you a straight answer.
Our Impact Windows & Doors Services in Fairfax
Hurricane Impact Windows
Fairfax homes built in the 1920s and 1930s still carry their original single-pane wood-sash windows on many hillside lots. Those sashes have spent decades absorbing moisture from canyon fog and redwood drip. The wood rots at the sill and jambs, the glazing seal fails, and the pane fogs. We replace them with impact-rated, fusion-welded vinyl or aluminum frames with low-E glass and argon fill, designed to hold up through both wet winters and fire season. On Willow Ave, our crew pulled a 1940s double-hung that had failed WUI glazing requirements. The new unit passed Fairfax’s fire inspection and stopped the seasonal swelling that had made the window inoperable every winter. Call (888) 635-0804 to discuss what your opening needs.
Impact Entry & French Doors
We see hollow-core wood entry doors on Fairfax bungalows that swell and rack every damp season. The weatherstripping tears. The door starts to bind. Moisture gets into the jamb and starts working on the framing. Then the homeowner tries to replace it and learns the new door assembly must pass a WUI fire test because of where the house sits. We specify Custom Windows & Doors in Fairfax with impact-rated, marine-grade door assemblies that hold their shape through Fairfax’s wet winter and meet CAL FIRE requirements without a fight at inspection. This is the door replacement Fairfax actually needs, not the one that happens to be on sale at a big box store in San Rafael.
Impact Sliding Glass Doors
Sliding doors on Fairfax cottages face a specific problem: trapped canyon fog works its way into the track and the frame, and over time the rollers corrode and the panel drags. When the time comes to replace the unit, the new door must be impact-rated and WUI-compliant in most of the 94930 zip code. We install our Sliding & Patio Doors in Fairfax with marine-grade rollers and sealed frames that keep that damp air out of the wall. The hardware is specified for the canyon’s moisture load, not for a sunbaked Sunbelt subdivision.
Impact Garage Doors
Garage doors in Fairfax do not get the same attention as front entries, but they sit inside the same Very High Fire Hazard Severity Zone and face the same damp air. A rusted, unsealed garage door panel is a weak point in a fire event and a moisture sponge through the winter. Our Impact Windows & Doors team replaces garage doors with impact-rated, sealed assemblies that meet the WUI requirements Fairfax enforces. Narrow access roads on hillside lots are normal for us. We plan for the tight turn off Cascade Drive before the truck ever leaves the shop.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Fairfax
We are an authorized installer for more than a dozen manufacturer lines, and for Fairfax homes we commonly quote PGT, CGI, and CWS side by side on paper so you can see exactly what you are buying and why one assembly costs more than another. When a Fairfax customer needs a replacement sash or new hardware, we pull from local stock and get the parts to your door faster than a shop that orders everything from a distant warehouse. We do not push one brand. We push the right assembly for a canyon microclimate and a WUI inspection.
Common Impact Windows & Doors Problems We See in Fairfax Homes
- Rotted sills and jambs on original wood-sash windows. Redwood canopy drip and persistent fog keep exterior wood wet for months. The wood fails at the base within 8-12 years, even with good paint. The sash often looks fine from the inside while the sill turns to sponge underneath.
- Swollen, racked entry doors that fail WUI fire tests. Hollow-core wood doors absorb valley moisture and change shape seasonally. When the town requires a WUI door assembly, the warped frame and damp jamb become a code failure, not just an annoyance.
- Seal failure and fogged insulated glass. The constant moisture cycle breaks glazing seals far earlier than on homes in drier, sunnier parts of Marin. A unit that should last 20 years may fog in a decade if the rough opening was not sealed with flashing tape and marine-grade sealant.
- Leaking nail-fin vinyl replacements. Standard vinyl windows installed without proper sealing at the head and sill let water in within a few wet seasons. The argon escapes, the sash binds, and the unit underperforms from year one. Fairfax’s damp air punishes shortcuts quietly and expensively.
Pricing for Impact Windows & Doors in Fairfax, CA
Fairfax pricing lands above flatland Marin on most openings. A single impact replacement window on a typical Fairfax bungalow runs $1,850-$3,400 including the unit, labor, flashing, and permit-ready documentation; impact entry and French doors run $3,200-$6,800 depending on size, glazing, and whether the rough opening needs frame repair. The price gap between a coastal-spec assembly and an inland-spec version is usually $400-$900 per opening. The coastal-spec uses marine-grade hardware, sealed rough openings, and WUI-compliant glazing. The inland-spec skips those steps and starts failing in this canyon within a decade. We quote the assembly that survives Fairfax’s damp air and fire inspection, not the one that just clears the minimum. Call (888) 635-0804 for free estimate pricing in writing.
We also serve Fairfax homeowners with wind mitigation reports and code compliance work: inspecting existing openings, documenting what meets current WUI standards, and preparing the paperwork that protects your home and your insurance position.
We Also Serve Cities Near Fairfax
TruePane Windows & Doors serves Fairfax and the surrounding Marin communities of San Anselmo, Kentfield, San Rafael, and Larkspur. Each has its own microclimate and its own code layers. San Anselmo flats do not see the same damp as the Fairfax canyon floor, and Kentfield hillsides bring their own fire-zone quirks. We know the difference because we pull permits in all of them and we drive the roads between them every day.
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 - Impact Windows & Doors in Fairfax
Most Fairfax homes do, yes. The Town of Fairfax maps the majority of its residential lots inside a CAL FIRE Very High Fire Hazard Severity Zone, which requires WUI-compliant glazing and door assemblies on permitted replacements, while the canyon’s damp redwood microclimate demands sealed rough openings and marine-grade hardware that prevent premature rot and seal failure. Call (888) 635-0804 to find out exactly what your specific parcel requires. We will check the fire hazard map and the building code before quoting anything.
Because Fairfax enforces WUI fire-resistance requirements in addition to Title 24 energy standards. A standard vinyl impact window can pass energy code and still fail the town’s fire inspection if its glazing does not meet the WUI assembly standard for a Very High Hazard zone. This is the most common surprise for flatland contractors on their first Fairfax permit. We specify units that clear both the energy code and the fire code on the first submittal.
Redwood canopy drip keeps the rough opening wet for months, and unsealed nail fins let that moisture reach the insulated glass unit. The seal fails, the argon escapes, and the pane fogs years earlier than it should. In Fairfax we seal every rough opening with flashing tape and marine-grade sealant before the window goes in. That step is not optional on a canyon lot, and it is the difference between a unit that lasts twenty years and one that fogs after eight.
A coastal-spec impact door uses marine-grade hinges, rollers, and threshold assemblies plus a sealed rough opening designed for persistent damp. An inland-spec door uses standard hardware and minimal sealing, which runs $400-$900 less per opening and starts corroding or racking within a few Fairfax winters. The cheaper spec costs more by year ten, when the hardware fails and the jamb rots. We quote the coastal-spec because we do the callbacks for both. Call (888) 635-0804 for side-by-side pricing on paper.
Yes. Most original wood sashes from the 1920s-1950s cannot meet current impact or WUI glazing standards, and the surrounding frame has usually rotted at the sill and jambs from decades of canyon moisture. The fix is a full replacement unit with an impact-rated, fusion-welded frame, WUI-compliant glazing, and a properly sealed rough opening. Glass-only replacement does not address the fire code or the rot, and it will not pass inspection.
Call TruePane Windows & Doors for a Free Fairfax Estimate
If you are in Fairfax and staring at a fogged pane, a rotted sill, or a door that will not close square in July, call (888) 635-0804. We will send a background-checked, uniformed technician to measure every opening twice, quote the right assemblies side by side on paper, and register both warranty layers before the truck leaves your driveway. Dale Kessler’s rule has been on the whiteboard since day one: if the pane is not true, the job is not done. We stand behind it. In writing. For many years.
Written by Dale Kessler, Owner at TruePane Windows & Doors.