Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across Fairfax
Window replacement in Fairfax, CA rarely means pulling a stock unit off the truck. Most of the homes here, the 1920s to 1950s bungalows and redwood-sided cabins along Cascade Drive, Bolinas Road, and the streets above Fairfax Creek, have rough openings that were cut for custom trim decades ago. A skilled crew measures, orders, and fits each unit to the actual opening, then deals with the moisture that Marin’s redwood canopy brings. That’s the work we do every week in Fairfax. If you’re looking at a rotten sash or a fogged pane, call (252) 675-6980 and we’ll give you a written price before any work starts.

Why Hale Windows & Doors Is Fairfax’s Preferred Window Replacement Company
Hale Windows & Doors has been handling Window Replacement across Marin since 2009, and the Fairfax jobs are some of the most detail-heavy we take on. Homeowners here tell us the same thing: the house is older than they expected, the openings are odd sizes, and the shade means every wood frame eventually swells or rots. We work with that reality instead of fighting it.
Every technician who arrives at a Fairfax home has been background-checked, identity-verified, and photo-badged. Before the visit, you get the tech’s name and photo so you know exactly who is at the door before you open it. If you’re also considering a Fairfax Front Door Replacement, we can assess both during the same visit. That matters when you work from home, when you’re alone, or when young kids are in the house. Our crews also know Fairfax’s layout well enough to plan staging on a tight lot without blocking a shared driveway or a neighbor’s gate.
We don’t ask you to trust us on faith. Every job gets a written price in your hands before any tool comes out, and every installation carries the 365-Day Done Right Promise: if the work isn’t right, we make it right. No argument, no re-quote, no runaround.
Window Glass Replacement in Fairfax
Window Glass Replacement in Fairfax usually means one of two things: a fogged double-pane unit that’s lost its seal, or a single cracked pane in an older wood sash. In a shaded valley like this one, fogged glass is common because the temperature swings between damp mornings and dry afternoons stress the edge seals. If the sash itself is still sound, we can often replace the insulated glass unit without touching the frame. That runs roughly $180 to $400 per window depending on size and whether the glass needs low-E coating.
Fogged Double-Pane Units
When a double-pane window fogs between the layers, the seal has failed. Fairfax’s damp microclimate makes this happen faster than in drier parts of Marin. We measure the sash, order the replacement unit, and set it in place with new glazing. The frame stays put, and in most cases we finish the job in under an hour per window.
Single-Pane Glass in Original Sashes
Many Fairfax bungalows still have original single-pane sashes from the 1940s or 1950s. If a pane cracks but the wood is solid, we can cut and set new glass on site. If the wood around the pane is starting to soften, though, a glass-only fix won’t hold. We’ll tell you straight before you pay for a repair that won’t last.
Window Sash Replacement in Fairfax
Window Sash Replacement in Fairfax is often the right call when a double-hung window sticks all winter, or when the bottom rail of the sash has started to rot from sitting in shade and damp. The sash is the moving part of the window, the wood or vinyl frame that holds the glass. In Fairfax, it’s usually wood, and under a redwood canopy it absorbs moisture for months. We rebuild or order replacement sashes sized to the existing frame, which keeps the job contained and usually costs between $350 and $750 per window, depending on material and whether we’re rebuilding the jamb too.
Rebuilding a Rotted Wood Sash
On a shaded lot off Cascade Drive near Deer Park, our crew replaced a failing double-hung unit after finding the north-facing jamb mossy and the sill soft from a Marin winter’s worth of fog and rain. We cut out the rot, treated the remaining wood, and fit a custom-sized sash that sealed correctly once the opening dried. That kind of repair costs less than a full frame replacement and keeps the original trim intact.

Custom-Sized Replacements for Non-Standard Openings
Fairfax homes from the 1920s to the 1950s often have rough openings that don’t match any stock size sold today. We measure every opening individually and order sashes to spec. It takes a little longer than pulling something from inventory, but it means the window actually fits, closes, and locks the way it should.
Trusted Brands We Service in Fairfax
We install and service windows from Fairfax homes using professional-grade lines including PGT, CGI, and CWS. When a Fairfax homeowner calls about a failed window from one of these brands, we can usually source the replacement parts quickly because we know what Marin’s damp climate does to seals, hardware, and weatherstripping. If you’re replacing rather than repairing, our team helps you pick the right glass and frame material for a shaded lot, not the same product we’d recommend for a sunny San Rafael hillside. That product-level thinking is the difference between a window that lasts and one that’s fogged again in three years.
Common Window Replacement Problems We See in Fairfax Homes
- Rotted sash bottoms from perpetual shade. North-facing windows under redwood canopy rarely dry out fully between storms. By midwinter, the bottom rail of a wood sash can be soft enough to push a finger into, and that’s the point where replacement beats repair.
- Windows that stick in January and work fine by July. Fairfax’s winter fog and rain make wood double-hung sashes swell. If the window binds only in wet months, the sash usually needs to be rebuilt or replaced to a stable size, not just sanded down.
- Tight lots that complicate access and staging. Many Fairfax homes sit close to the property line. Ladders, debris bins, and material staging have to be planned carefully or the job blocks a neighbor’s driveway, which turns a window project into a neighbor dispute.
- Fogged double panes from temperature swings. The gap between a damp 55-degree morning and a dry 70-degree afternoon works the edge seal on an insulated glass unit. Fairfax sees this failure mode more often than sunnier parts of Marin.
Pricing for Window Replacement in Fairfax, CA
Window replacement in Fairfax runs a wide range because the housing stock varies so much. Glass-only replacement on a standard double-pane unit runs $180 to $400. Replacing a wood sash runs $350 to $750. A full frame replacement on a non-standard 1940s opening, including custom sizing, rot repair, and new trim, typically lands between $900 and $1,800 per window. Vinyl replacement windows run $500 to $1,100 depending on size and glass package. What moves the price: opening size, whether the existing frame is salvageable, and how much staging room the lot gives us. Call (252) 675-6980 and we’ll give you a written line-item quote before any work begins.
We Also Serve Cities Near Fairfax
Our window replacement crews work throughout central Marin, so if you’re in San Anselmo, Kentfield, San Rafael, or Larkspur, the same team that handles Window Replacement in Fairfax can get to you. Each town has its own housing quirks, but the approach stays the same: measure carefully, price honestly, and send a technician you know by name before they knock.
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 Window Replacement in Fairfax
Because most Fairfax homes built between the 1920s and 1960s have rough openings that were framed for custom redwood trim, not for the standardized sizes window manufacturers produce today. A stock unit often leaves gaps that get hidden with trim but leak air and water. We measure every opening and order to the actual dimensions, which costs a bit more but means the window fits the house the way it was originally built to. For an exact price on your openings, call (252) 675-6980 for a free estimate.
Not always. If the sash is swelling from winter moisture, we can often rebuild or plane it to a stable size without touching the frame. But if the wood has been swelling and shrinking for decades, the joints may be too far gone, and replacing the sash is the honest fix. The only way to know is to have someone put eyes on the window while it’s sticking. Estimates are free, and you’ll get a written price either way.
Access changes the quote, plain and simple. If we can stage materials in your driveway and set up a ladder without crossing a property line, the labor is straightforward. If the window is three feet from a neighbor’s wall and the only access is through the house, we add labor for protection, cleanup, and coordinating with neighbors. We’ll walk the lot with you before quoting, and the written price reflects what we actually see on site, not a generic number.
For a like-for-like replacement that doesn’t change the opening size, usually not. If you’re enlarging an opening, adding a new window, or working on a home with historic overlay review, the Town of Fairfax may require plan review. When a permit is needed, we pull it and the work gets inspected before we call the job done. Call (252) 675-6980 and we’ll tell you whether your specific project triggers review before you spend anything.
Fairfax’s problem is moisture, not heat gain, so the glass choice is less about solar control and more about seal durability and condensation resistance. We typically recommend low-E glass (a thin coating that blocks heat while letting light through) with a warm-edge spacer to reduce edge condensation in winter. Double-glazed units with argon fill also hold up better in a damp valley than older single-pane glass. The exact spec depends on your home’s exposure, and we’ll explain the trade-offs in plain language before you commit.
Written by Spencer Odell, Owner at Hale Windows & Doors, serving Fairfax since 2009.










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