Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Impact Windows & Doors Across Sebastopol
Impact windows and doors in Sebastopol handle two jobs that most of the Bay Area never thinks about at once: they hold up under wind and debris, and they stand up to a marine fog belt that keeps wood wet half the year. A typical full-frame impact window replacement in Sebastopol runs $1,200-$2,800 per opening, and an impact sliding glass door usually lands between $4,500 and $9,500 installed. We’re TruePane Windows & Doors, and we’ve been setting impact-rated units on older Sonoma County homes long enough to know what the fog does to a sill. Call (888) 635-0804 for a free estimate, and we’ll come out and measure the openings the right way.
Why TruePane Windows & Doors Is Sebastopol’s Preferred Impact Windows & Doors Company
Sebastopol homeowners tend to know their houses. They’ve lived in them twenty, thirty years. They’ve watched the same south-facing window seal fog up three times while a big-box installer kept telling them it was normal. We get called in after that happens, and we fix it properly. Our Impact Windows & Doors team measures every opening twice, quotes manufacturer lines side by side on paper, and registers both warranty layers in writing before the truck leaves your driveway. That’s not a pitch. It’s the only way Dale Kessler would let a job go out since he started this company in 2008.
We serve Sebastopol and the surrounding acreage with background-checked, uniformed technicians who work like they’re in their own mother’s house. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, but the crews who do the work are local and they know what Bodega Bay fog does to a window jamb by October. A live person answers our phone 24 hours a day, every day. When you call with a failed seal or a door that won’t latch, you talk to a person who can schedule the truck.
Our Impact Windows & Doors Services in Sebastopol
Hurricane Impact Windows
Impact-rated windows in Sebastopol are not a coastal luxury. The same laminated glass that holds against debris also seals far better against the persistent fog that rolls in from Bodega Bay and lingers over the Laguna de Santa Rosa. In the 95472 ZIP, we’re regularly replacing original wood double-hungs on 1910s and 1920s Craftsman bungalows that have swollen, stuck, and rotted at the sill. A fusion-welded impact window with a robust low-E coating and argon fill is the baseline we recommend here, not the upgrade.

Impact Sliding Glass Doors
Rural parcels on former Gravenstein orchard land tend to have wide openings facing the afternoon sun and west wind. Impact sliding glass doors for those openings need to do more than survive a storm. They need to square up in an opening that may have settled, and they need threshold flashing that works when the ground stays damp all winter. We re-square jambs, re-grade sills, and set the track so the door moves cleanly in August and January alike.

Impact Entry & French Doors
Older Sebastopol homes near downtown often have original entry doors that bind in fall when the humidity sits at 90 percent for weeks. An impact-rated entry or French door with a composite frame won’t swell the way the original fir did. We set these doors in openings that have been re-flashed and re-squared, then we register the warranty paperwork before we leave. You’ll see the exact manufacturer line and the exact duration on paper.

Impact Garage Doors
Garage doors on rural Sebastopol properties take the brunt of west wind coming across open orchard land. We install impact-rated garage doors with reinforced tracks and wind-load hardware sized for Sonoma County’s exposure ratings. If the building is a detached shop or ADU on a former orchard parcel, we coordinate the wind mitigation documentation so the county inspection goes through without a second trip.

What happens when you call
- 1
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 Sebastopol
We’re an authorized installer for more than a dozen manufacturer lines, and for Sebastopol’s damp, fog-heavy climate we often quote CGI, PGT, and ES Windows because their impact-rated insulated glass units hold a seal well in high-humidity conditions. We don’t push one brand. We put two or three side by side on paper with the warranty durations written out, and you choose. Local stock for common Sebastopol applications means we’re not waiting on a freight line from the East Coast when a replacement unit is ordered.
Common Impact Windows & Doors Problems We See in Sebastopol Homes
- Fog-driven seal failure in older double-hungs. Near-daily morning fog off Bodega Bay works its way into unsealed glazing channels on 1920s Craftsman windows. The insulated glass unit losing its argon is usually a symptom, not the disease. The frame and flashing need to be corrected or the new unit fails again in a few years.
- Sashes that bind every fall. Wood-framed double-hung windows on older Sebastopol homes swell with the first long wet spell. We often find the jamb itself has shifted, which means the repair is structural, not just a sand-and-paint job.
- Door thresholds rotting from below. Low-lying parcels near the Laguna de Santa Rosa floodplain wick groundwater up through subfloor framing. The threshold rots from underneath while the visible surface looks serviceable. You don’t see it until the door won’t latch or water shows up on the interior floor.
- Inadequate flashing on rural ranch homes. Seal tape that would hold up fine in Cloverdale or Healdsburg fails in Sebastopol’s sustained condensation. We pull and re-flash these openings as part of the install, not as an add-on line item.
Pricing for Impact Windows & Doors in Sebastopol, CA
Our Impact Windows & Doors pricing in Sebastopol reflects the reality of older homes and rural acreage. A standard single impact window replacement runs $1,200-$2,800 depending on size, frame condition, and whether we’re repairing a rotted jamb. Impact sliding glass doors range $4,500-$9,500, and impact entry doors typically land between $3,200 and $7,800. Wind mitigation and code compliance documentation adds $400-$1,200 depending on the scope. We give free estimates with written line-item pricing before any work starts, and we don’t change the number once we’ve agreed on it. Every job carries the Done Right Promise and both manufacturer warranty layers registered in writing. Call (888) 635-0804 to schedule your free estimate.
We Also Serve Cities Near Sebastopol
TruePane Windows & Doors serves all of Sonoma County around Sebastopol, including Santa Rosa, Rohnert Park, Cotati, and Windsor. If you’re a few miles out on a county road or inside another town, the same Keystone Standard applies: both warranty layers in writing, workmanship guaranteed, and a live person on the phone.
Serving Sebastopol, CA - Our Local Coverage Area
We’re based in the Sebastopol 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 Sebastopol
Yes. Sebastopol sits squarely in the Bodega Bay fog belt and receives substantially more persistent coastal moisture than Santa Rosa seven miles east or Petaluma to the south. That means impact windows installed here need warm-edge spacer systems, high-quality low-E coatings, and argon fill that resists condensation at the glass edge. We spec these as the baseline in Sebastopol, not the upgrade tier, because we’ve seen the alternative fail within three to four years.
Orchard land around Sebastopol was often graded for flood irrigation and planted in deep loam that holds moisture. When you build on it now, the soil around your foundation stays wet longer each season, and that moisture reaches the bottom of window and door rough openings. We account for this by using sill pans with positive drainage, extending flashing tape down past the bottom plate, and sometimes recommending composite frames where wood would wick moisture. Call (888) 635-0804 for an exact scope on your parcel.
Generally not, if the wind mitigation documentation is prepared correctly the first time. County review for detached structures on rural Sebastopol lots includes checking the impact-rated product listings and the installation details against the approved plans. We prepare that paperwork as part of our Wind Mitigation & Code Compliance service, so the inspector sees a complete file with the correct design pressure ratings and anchor schedules. That avoids the back-and-forth that stalls projects for weeks.
Because Sebastopol’s fall humidity from the marine fog layer runs near 90 percent for weeks at a time, and older wood double-hung sashes absorb that moisture and expand. Once a sash binds in the jamb, the paint wears, the joint loosens, and the problem compounds. The fix is usually not a new sash alone. The jamb needs to be re-squared and properly flashed, and often the only long-term answer is replacing the unit with an impact-rated window that won’t move with the seasons. The work carries our Done Right Promise.
The glass and frame can, but the opening around them needs to be detailed correctly. On low-lying parcels east and south of town, groundwater wicks up through subfloor framing and rots door thresholds and sill pans from below, a failure mode that catches out contractors used to drier inland valleys. We treat the subsurface moisture source, not just the visible exterior surface. That means re-grading the exterior sill, installing a weather-resistant barrier that drains, and sometimes addressing the crawlspace ventilation so moisture doesn’t get trapped under the structure. The window itself is the easy part; the opening is what determines whether it lasts.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Sebastopol and Sonoma County.



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