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 Kensington
Window replacement in Kensington runs $850 – $1,900 for a standard double-hung insert and $2,400 – $5,500 for a full-frame replacement with hillside shoring, depending on the condition of the rough opening and the glazing spec. The work rarely takes more than a day per opening once the permit is cleared, but the real variable on these hillside lots is what the crew finds behind the old stucco when the sashes come out. If you’re calling from anywhere in the 94707 or 94708 zip codes, we know the framing patterns, the moisture problems, and the inspectors you’ll be dealing with. Call (817) 686-2228 for a written line-item price before any work starts.

A meridian is a fixed line you measure everything against, and that’s how we run every install in Kensington. No pressure, no door-knocking, and no price that moves after the contract is signed. Just a crew that shows up as promised, a written price, and a full year in writing if anything fails.
Why Meridian Windows & Doors Is Kensington’s Preferred Window Replacement Company
Kensington homeowners tend to do their homework. They’ve usually lived through at least one bad contractor experience, and they want to see a price on paper before anyone touches a ladder. That’s the way we work. Every job starts with a written line-item quote delivered before work begins, and the number on that page is the number you pay. No surprises at the door, no “we found rot” upcharges that weren’t scoped in advance.
We’re part of the Garrison Partners family, operating to The Garrison Standard since 2009. That standard means background-checked, uniformed technicians on every call, so when someone rings the bell off Arlington Avenue you know exactly who’s walking through the door. It means live-person phone coverage 24 hours a day, seven days a week. And it means the Window Replacement work we perform is covered by a written 365-Day Done Right Promise: if the installation fails within a full year, we return at no charge.
Elliot Vance runs our operations, and he’s the first to say that Kensington’s hillside lots separate the disciplined installers from the ones who caulk over problems and leave. We spec windows from eight manufacturer lines, including CWS, ES Windows, and ECO Window Systems, because no single brand fits every opening on these slopes. The right product gets matched to the wind exposure and moisture profile of your lot, not whatever happens to be sitting in a warehouse.
Window Pane Replacement in Kensington
Window Pane Replacement in Kensington is a glass-only job done when the sash and frame are still solid but the insulated glass unit has failed, typically visible as fog between the panes or a crack that spreads through the tempered exterior lite. On Kensington’s windy ridgelines, a cracked pane is not just an eyesore; an open breach changes the pressure load on the entire sash and can accelerate seal failure in the unit beside it. A single pane or IGU replacement typically runs $250 – $650 installed, depending on glass thickness, low-E coating selection, and whether the sash needs to be removed and carried to a fabrication table.
Glass-Only Replacement vs. Full Unit Swap
The fast path on a modern vinyl or aluminum sash is pulling the stops, setting a new IGU into the same frame, and restoring the glazing bead. That works when the frame is square and the weatherstripping still compresses. Older wood sashes with putty-glazed single panes take longer and often reveal dry rot in the muntins once the glass comes out, which pushes the job from a glass replacement into a sash rebuild.
When Kensington Homeowners Should Act
Fogged glass means the seal between panes has failed and the argon or krypton fill has leaked out. There is no repair for a failed seal within a dual-pane unit; the glass gets replaced, not the air inside it. If the pane faces the Golden Gate and takes wind-driven rain in winter, we recommend upgrading the replacement glass to an impact-rated laminate while the sash is already open.
Window Seal Repair in Kensington
Window Seal Repair in Kensington addresses failed insulated glass units, dried compression gaskets, and the intersection between the window flange and the stucco exterior, which is where hillside moisture does its slow work. When the IGU seal fails, condensation fogs the inside of the pane and the window loses most of its thermal performance. It is a replacement job, not a caulk-and-hope job: the failed unit comes out, the sash is cleaned and inspected, and a new sealed unit with fresh desiccant goes in. Seal and gasket work on a Kensington window typically runs $180 – $480 per opening, with IGU replacement often landing $350 – $700 when the sash requires re-glazing.
Failed IGU Seals
A failed IGU shows as persistent fog, wavy glass, or a milky film that will not wipe off from either side. The failure means the desiccant inside the spacer bar has reached saturation, and nothing short of swapping the glass unit solves it. In Kensington’s marine-influenced microclimate, this happens faster on windows that catch the afternoon sun and then cool rapidly at night.

Exterior Perimeter Seals and Stucco Gaps
Gaps between the window flange and original stucco let wind-driven rain reach the framing, which is how sills rot behind an exterior that still looks fine. We inspect the perimeter seal on every Kensington job because this is where a new window leaks within a year if the rough opening was not addressed.
Trusted Brands We Service in Kensington
We are authorized to install and replace products from CGI, CWS, ES Windows, and ECO Window Systems, along with four other lines in the portfolio. Kensington homeowners often ask for impact-rated glazing on the windward side of ridgelines, and we spec CGI for heavy design-pressure ratings when the lot exposure demands it. CWS and ES Windows give us solid mid-range options for standard double-hung and casement replacements. ECO Window Systems is a sensible choice when thermal performance is the priority and the budget has a ceiling. Because we stock local parts and glass in the Bay Area, lead times for seals, sashes, and hardware in Kensington stay short.
Common Window Replacement Problems We See in Kensington Homes
- Rotted sills and jambs behind intact stucco. Hillside moisture wicks into the original framing, and the wood gives out years before the stucco shows a crack. We rebuild the rough opening before installing anything new, otherwise the next window leaks the same way the last one did.
- Out-of-square openings in pre-1960 construction. Foundations settle on these slopes, and it is common to find the sill ledge off by three-quarters of an inch or more. A new square window in an out-of-square opening binds the sash and fails the seal early.
- Underspec’d impact glazing for the wind exposure. Homeowners order impact-rated glass without verifying the design pressure their particular lot requires, and the unit underperforms or fails the inspection. We check the exposure before we spec the glass.
- Failed dual-pane seals on the afternoon sun side. The west-facing glass heats up all afternoon and cools fast when the fog rolls in, and that thermal cycling kills seals faster here than on the flatlands.
Pricing for Window Replacement in Kensington, CA
A standard insert window replacement in Kensington runs $850 – $1,900 per window installed. Full-frame replacement, which means removing the old window down to the studs and rebuilding the rough opening, runs $2,400 – $5,500 per opening depending on the shoring required for the slope. Glass-only and seal work lands in the $180 – $700 range. What moves the price: the condition of the rough opening, whether we need to add shear-wall strapping or extra fasteners for lateral-load code, the glazing spec you select, and whether the inspector requires us to upgrade the flashing detail to current Title 24 standards. We give you a written line-item price before any work starts, and that number does not move at the door. Call (817) 686-2228 to schedule a free estimate.
We Also Serve Cities Near Kensington
If your search for Window Replacement in Kensington extends beyond the hills, our crews also cover nearby Bay Area and California markets: Los Angeles, San Diego, San Jose, and San Francisco. The same written pricing, the same 365-Day Done Right Promise, and the same disciplined crew standard apply wherever the job is.
Serving Kensington, CA - Our Local Coverage Area
We’re based in the Kensington 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 Kensington
Yes, in most cases. Kensington is in unincorporated Contra Costa County, so the permitting authority is Contra Costa County Building Inspection, not a city hall. Insert replacements into existing frames are often treated as like-for-like and may not require a full plan review, but full-frame replacements and any opening that changes the rough opening dimensions or the glazing area typically require a permit. We pull the permits, schedule the inspections, and the inspection pass is written into the job close-out. Call (817) 686-2228 and we’ll confirm what your specific opening needs.
For a single insert replacement, the on-site work takes four to six hours once the permit clears. A full-frame replacement on a hillside lot usually runs one day, and a whole-home replacement in Kensington is typically two to four working days depending on the number of openings and whether we’re shoring sloped sills. Permit review in Contra Costa County adds anywhere from a few days to two weeks for full-frame work. We’ll give you a calendar date range in writing before you sign.
Standard inserts run $850 – $1,900 per window installed; full-frame replacements run $2,400 – $5,500 per opening. The biggest cost drivers in Kensington are hillside framing conditions, out-of-square openings that need correction, the glazing spec you select, and whether the inspector requires a full Title 24 flashing detail update. Get your exact price in writing; call (817) 686-2228.
Nothing should change the price once work begins, because we scope the rough opening during the estimate, not after the window is out. The only things that can alter a price are conditions that cannot be seen until the wall is open: hidden termite damage, framing rot that extends into the header or king studs, or a code violation the inspector flags that was not visible before demolition. We price those contingencies explicitly and in writing before we start, and we do not manufacture surprises at the door.
Yes, when the sash and frame are still solid. A failed IGU gets replaced with a new sealed unit, and worn gaskets and perimeter seals get swapped without replacing the window. Glass-only replacement in Kensington runs $250 – $650 for a standard IGU, and seal and gasket work lands $180 – $480 per opening. If the sash is rotted or the opening is badly out of square, a full replacement is the honest fix, and we will tell you that plainly. Call (817) 686-2228 for a free assessment.
On a steep lot off Berkeley Park Boulevard, our crew replaced a failing double-hung in a 1940s stucco home. The sill had rotted from years of hillside moisture, and the original jamb was out of square by nearly an inch. We stabilized the opening, installed a new insulated glass unit with impact-rated glazing and laminated glass interlayer, and the homeowner immediately noticed a drop in street noise and cooling costs. That is what a disciplined install looks like in Kensington.
Written by Elliot Vance, Owner at Meridian Windows & Doors, serving Kensington since 2009.










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