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AfterFast, Reliable Window Replacement Across Sebastopol
Window replacement in Sebastopol runs $850-$1,400 per opening for a standard insert, and $1,600-$3,200 per opening for a full-frame job with proper flashing and rot repair. Most homes here need the full-frame route, not the cheaper insert, for reasons we’ll get into below. We’ve been working the 95472 ZIP long enough to know which Craftsman bungalows off Bodega Avenue hide rot behind the trim and which mid-century ranch houses near the Laguna de Santa Rosa have sills wicking groundwater from below. If you’re pricing the job, call (888) 635-0804 and we’ll give you a written line-item quote with real numbers, not a vague ballpark.
Why TruePane Windows & Doors Is Sebastopol’s Preferred Window Replacement Company
We’re not the outfit that undercuts everyone on bid day and disappears when the fog comes back in November. TruePane was founded by Dale Kessler, a second-generation glazier who built the company in 2008 on a rule he still keeps on the whiteboard: if the pane is not true, the job is not done. Every window we set in Sebastopol carries the Done Right Promise and The Keystone Standard, which means both manufacturer warranty layers are registered in writing, with durations stated, before our truck leaves your driveway.
What does that look like on a real job? A background-checked, uniformed technician measures every opening twice. You get manufacturer lines quoted side by side on paper so you see exactly what you’re buying. Then the work gets done, the warranty gets registered, and if anything is off within 90 days, we come back and make it right. No paperwork fights, no arguing. We live in this region, hire local apprentices and train them into journeymen, and we plan to be answering the phone in thirty years. If you want to see what Window Replacement looks like when it’s done by people who treat it as a craft commitment, we’re the call.
Our Window Replacement Services in Sebastopol
Full Frame Replacement
This is the standard job in Sebastopol, and the marine fog is the reason. The old wood-framed double-hungs on 1900s-1930s Craftsman and Victorian homes here rot from both directions: moisture-soaked air attacks the exterior casing while condensation and ground wicking attack the sill from inside the wall. Full-frame replacement means pulling the entire window to the rough opening, replacing rotted framing, flashing the opening correctly, and setting a new window that actually drains. Full-frame work in Sebastopol typically runs $1,600-$3,200 per opening depending on rot repair and finish work.
Insert Window Replacement
An insert leaves the existing frame in place and drops a new window into it. In drier Bay Area towns that works fine. Here it’s often a gamble because you’re installing a new window inside a frame that may already have rot you can’t see. We do inserts when the existing frame is genuinely sound and square, and we tell you honestly when it isn’t. Insert work in Sebastopol runs $850-$1,400 per opening and works well on mid-century ranch homes where the original frames were built with better drainage than the older Craftsman stock.
Storm Window Replacement
Storm windows matter here in a way they don’t inland. Sebastopol sits in the coastal fog belt and takes 35-40 inches of rain annually, plus months of near-daily morning condensation. A properly fitted storm window adds a thermal and moisture break that protects the primary window from direct fog exposure. We replace and retrofit storm units on the older wood window stock throughout the downtown historic neighborhoods. We also carry impact-rated options for homeowners who want the extra protection and the insurance documentation that goes with it.
Energy-Efficient Upgrade
Fogged double-panes show up here within 8-10 years instead of the 15-plus you’d expect in Santa Rosa. When we replace failed sealed units, we quote low-E glass packages side by side so you can compare the U-factor and solar heat gain numbers on paper. For Sebastopol’s climate, low-E with a moderate SHGC is usually the right call: it keeps the damp cold out without making the house a dark box in summer. This is where the energy upgrade conversation starts, not where it ends.
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
TruePane is an authorized installer for more than a dozen manufacturer lines, including, PGT, and CGI. For Sebastopol’s damp, wind-exposed conditions, we often quote PGT and CGI impact-rated lines for the wind-load threshold and the coastal-moisture durability, and Milgard for homeowners who want fiberglass that won’t rot. We stock common replacement parts and components for the lines we install, which means shorter turnaround on warranty service and fewer return trips. You’ll see the manufacturer names, model numbers, and warranty durations on paper before you sign anything.
Common Window Replacement Problems We See in Sebastopol Homes
- Rot from unflashed nailing flanges. The near-daily fog penetrates around frames that were never flashed with modern materials. By the time the exterior paint cracks, the rough opening behind it can be three-quarters gone. We see this constantly on 1920s Craftsman houses off Main Street and Bodega Avenue.
- Premature seal failure. Marine moisture shortens insulated glass unit life dramatically. Fogged double-panes that should last 15-plus years in Santa Rosa fail in 8-10 here. The fix is a quality low-E unit installed dry, not a cheap reseal that buys you two winters.
- Groundwater wicking through sill pans. Lower-lying parcels near the Laguna de Santa Rosa floodplain have moisture that travels up through subfloor framing and rots thresholds and sill pans from below. This doesn’t show until the full frame comes out. Contractors from drier inland valleys miss it entirely.
- Sticking sashes and binding doors. Each fall, wood swells with the returning rains and homeowners find windows painted shut by humidity. Properly flashed and sealed replacement units eliminate the swelling cycle, but only if the subsurface moisture source is addressed at the rough opening.
Pricing for Window Replacement in Sebastopol, CA
| Service Type | Typical Range Per Opening |
|---|---|
| Insert Window Replacement | $850 - $1,400 |
| Full Frame Replacement | $1,600 - $3,200 |
| Energy-Efficient Retrofit with Low-E Glass | $950 - $1,600 |
| Storm Window (New or Retrofit) | $600 - $1,200 |
What moves the number on a Sebastopol job: how much rot comes out with the old frame, whether we’re matching the trim profile on a Craftsman or re-casing an opening, the glass package you choose, and whether the window carries a PG or DP rating that meets the wind-load requirement on your permit. We give you a written line-item quote before any work starts. Call (888) 635-0804 and you’ll have the real number, not an estimate that shifts once the old window is out.
We Also Serve Cities Near Sebastopol
Our crews work throughout Sonoma County, including Sebastopol and the surrounding communities of Santa Rosa, Rohnert Park, Cotati, and Windsor. The same TruePane technicians, the same written quotes, and the same Done Right Promise apply wherever the job is.
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 - Window Replacement in Sebastopol
Because the existing wood frames are usually rotted. Sebastopol’s fog belt delivers months of condensation plus 35-40 inches of annual rain, and the old double-hungs on homes built between 1900 and 1930 soak that moisture on both sides of the frame. An insert drops a new window into the old rotted frame and hides the problem for a few years until it fails harder. We quote inserts when the frame is proven dry and square, and we quote full-frame replacement when it isn’t. Call (888) 635-0804 for an honest assessment and a written quote either way.
Most permits in Sonoma County require a design pressure rating of DP 35 or higher for windows in exposed locations, with PG 35-rated products for coastal-wind areas. Sebastopol’s position inland from Bodega Bay means the wind still carries, and the building department will check. A Sebastopol-compliant quote includes the rating and the documentation. A cheap quote that omits the rating won’t pass final inspection. We can tell you exactly what your project needs before you apply. Call (888) 635-0804 and ask for a permit-ready quote.
Documented proper flashing means your insurance claim for storm-related water intrusion stands a better chance of being processed without a fight. Insurers look for evidence that the installation met code and manufacturer spec. Our crews flash every rough opening with butyl tape and document each layer in writing before the window is set. If a storm damages a properly flashed opening, you have a paper trail showing the work was done right. Call (888) 635-0804 if you want to understand what documentation your current windows should have.
Yes. We match stile widths, casing profiles, and the historical sightlines that Craftsman homeowners in Sebastopol care about. Milgard and Marvin both offer wood-clad and fiberglass double-hung configurations that read as period-correct at the curb while carrying modern low-E glass and better flashing. The difference is the glass and the substrate rot stops being a problem. We can quote you the same double-hung proportions with a different material underneath. Call (888) 635-0804 and we’ll bring the catalog pages to your door.
Because properties near the Laguna floodplain pull groundwater up through the subfloor framing, and that moisture travels into the sill pan and the bottom of the window. Even expensive sealed units fail fast when the frame below them stays damp. That’s why our crews address the subsurface moisture at the rough opening before the new window goes in. It’s the part of the job most companies miss. Call (888) 635-0804 if you’re dealing with repeated fogging near the watershed.
What a Sebastopol-Compliant Window Replacement Quote Must Include
Here’s what separates a real quote from a cheap one in this town. The compliant quote lists the wind-load rating for the window you’re buying, the flashing material and the number of layers, the permit steps and who pulls it, the inspection schedule, and what happens to the rotted framing underneath. It also states the warranty durations in writing and shows both manufacturer layers. If your quote doesn’t have those line items, it isn’t a Sebastopol quote. We write all of it down before work starts. Call (888) 635-0804 for a free written estimate you can actually read.
Written by Dale Kessler, Owner at TruePane Windows & Doors.