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Fast, Reliable Window Replacement Across Lafayette
If your Lafayette home still has single-pane aluminum frames from the 1960s and ’70s, you already know the drill: rooms that bake in summer, fogged glass that won’t clear, and windows that rattle when the wind funnels down from the Briones hills. Window replacement here isn’t a cosmetic project. It’s how you cut cooling bills, quiet the noise from Highway 24, and stop watching heat leak through glass every winter morning. We’re Juniper Windows & Doors, and our Window Replacement team works across Lafayette daily, from Burton Valley up to Reliez Valley. Call us at (682) 281-2168 and you’ll get a real person, a straight answer, and a written price before anything gets ordered.
Why Juniper Windows & Doors Is Lafayette’s Preferred Window Replacement Company
Lafayette homeowners tell us the same thing: they don’t want a sales pitch, they want a number. Sean Mackey, who leads our team, built the process around that. Every project gets a written price before work starts, so you’re not watching a quote inflate at the doorstep. Our technicians arrive in uniform, background-checked, and you’ll get a live arrival time you can track from your phone, the same way you’d track a ride. No four-hour windows. No “we’ll text you when we’re close.”
Because we dispatch from our Bay Area office and run crews through Lafayette regularly, we know the housing stock here: the mid-century ranchers off Moraga Road, the larger custom builds near Acalanes Ridge, and the standard double-hungs you’ll find throughout the Trails neighborhood. That local familiarity means we can plan for what your specific home likely needs before we ever walk the property.
And when the work’s done, it’s done, in writing: 365 days, parts and labor, covered by our Done Right Promise. If something isn’t right a year after installation, we come back and fix it. No charge, no argument.
Window Repair in Lafayette
Window Repair in Lafayette usually starts with the same complaints: a crank that won’t turn, a sash that’s fallen out of balance, or condensation permanently trapped between two panes of glass. We do handle repairs, but we’re direct about when repair makes sense. If your frames are extruded aluminum with failed seals, a repair may buy you a season, not a decade. A quick fix like a replaced balance or new weatherstripping runs $120 to $300 in Lafayette. Refreshing caulking and resealing a window averages $180 to $420, depending on the exposure and how much old sealant needs to come out first.
What We Repair In-House
We replace broken sashes, swap out damaged insulated glass units, rebuild crank mechanisms, and fix air leaks at the frame. Small parts are stocked on our trucks, so when someone’s coming to Lafayette, we’re not making a second trip for a $14 pivot bar.
When Replacement Beats Another Repair
If the window’s over 25 years old, condensation sits between the glass, or you’re feeling a draft even after fresh seals, we’ll tell you. We’d rather replace a window for $800 than sell you $350 in stitches on a frame that’s already done.
Window Replacement Company in Lafayette
As a Window Replacement Company working in Lafayette, we focus on two routes for most homes here: full-frame replacement and insert replacement. Full-frame means we pull the entire old window down to the rough opening and install a brand-new unit. Insert, sometimes called a pocket replacement, keeps your existing trim intact and fits a new window into the old frame. Inserts in Lafayette typically run $600 to $1,100 per window installed. Full-frame work, needed when the original frames are rotted or you want larger glass, ranges from $1,100 to $2,400 per opening depending on size, material, and whether stucco repair is involved outside.
Homes With Stucco Exteriors
Large portions of Lafayette’s housing stock are stucco over wood framing. When we do full-frame work on those houses, we have to cut back the stucco cleanly, flash the new window correctly, and patch so it doesn’t look patched. That’s a specific skill our crews do weekly here, not something a general handyman should attempt after a YouTube video.
Seasonal Timing & HOA Rules
Lafayette’s winter rains run November through March, and nobody wants a torn-out window opening during an atmospheric river. We plan installations around the forecast, and we’ll book rainy-season replacements in careful sequence so no opening stays exposed. Some Lafayette neighborhoods also have HOA design rules about window styles and colors, and we’re happy to help you navigate that paperwork before you order.
Trusted Brands We Service in Lafayette
When Lafayette customers ask us what to put in their home, we talk glass and climate before we talk brand names. West-facing windows up on Lafayette’s hillsides take serious afternoon sun, so we often recommend PGT impact-rated glass or CGI frames built for thermal stress without warping. For homeowners who want clean sightlines and strong efficiency numbers, ES Windows and CWS both offer lines that perform well in our dry summers and cool, damp winters. Because we install these lines regularly in Lafayette, we can get local support quickly when a replacement sash or hardware piece is needed, which cuts weeks off turnaround compared to ordering blind from a catalog. We’ll never push you toward whatever’s on the truck. We’ll quote what fits your house, your exposure, and your budget, in writing.
Common Window Replacement Problems We See in Lafayette Homes
- Sun-bleached and warped vinyl on west-facing slopes. Homes along the hills above Happy Valley Road and Reliez Valley get hammered by afternoon sun, and low-grade vinyl will chalk and bow in a few seasons. We spec materials that can take that exposure year after year.
- Single-pane aluminum from the 1950s and ’60s build boom. Much of the original housing stock from Lafayette’s post-war expansion used aluminum frames with zero thermal break. Those frames sweat in winter and radiate heat in summer, and there’s no repair that fixes their basic design.
- Fogged glass and failed seals from temperature swings. Lafayette’s warm days and cold nights put pressure on double-pane seals. Once the seal goes, you get permanent haze between the panes. Replacement with a fresh insulated unit is the only real fix.
- Wood rot at the sills on older ranch-style homes. The classic single-story ranchers in Burton Valley and along St. Marys Road often have wood-framed windows where decades of winter rain have worked into the sills. By the time you see peeling paint, the rot is usually deeper than it looks.
Pricing for Window Replacement in Lafayette, CA
A full-house vinyl insert project in Lafayette, replacing 10 to 12 windows, typically runs $7,000 to $13,000. Going full-frame on the same house ranges from $12,000 to $26,000, and that gap reflects stucco work, trim, and interior patching. Energy-efficient upgrades with low-E glass and argon fill add roughly 10 to 15 percent per window over standard glass. High-end lines from PGT or ES Windows in larger custom sizes can push a full-frame window to $3,000 or more, especially on hillside homes where the wind load matters. The fastest way to get a real number is to call (682) 281-2168. We’ll schedule a walkthrough and hand you a written, line-by-line price. That number doesn’t move later.
We Also Serve Cities Near Lafayette
While this page focuses on Window Replacement in Lafayette, our crews regularly handle projects in Walnut Creek, Orinda, Moraga, and Pleasant Hill. If you’re a few minutes outside Lafayette and weighing Window Installation in Lafayette versus a nearby service, call us and we’ll figure out coverage for your address. We also handle Door Replacement in Lafayette for homeowners tackling an entry or patio refresh at the same time.
Serving Lafayette, CA - Our Local Coverage Area
We’re based in the Lafayette 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 Lafayette
Most Lafayette estimates happen within three to five business days of your call. If you call (682) 281-2168, a live person picks up, asks a few questions about your windows, and gets you slotted for the next available walkthrough. The estimate itself is free and the price you receive is written, not verbal.
We work throughout Lafayette, including Burton Valley, downtown near Mt. Diablo Blvd, the Trails, Happy Valley, Reliez Valley, and homes up toward Acalanes Ridge. If you’re inside Lafayette city limits, you’re in our regular service area. Call (682) 281-2168 if you’re on the edge of Orinda or Moraga and want to confirm.
Yes, for true emergencies like a broken slider after an impact or a window that won’t close at night, we can often dispatch a crew to Lafayette quickly. The phone line is answered 24/7, so you’ll always reach a real person who can assess whether it’s an emergency fix or something to schedule. A temporary board-up and a lasting replacement can usually both be quoted on the spot.
The honest answer is no, not in any meaningful way. Lafayette’s pricing for replacement windows is in line with the rest of central Contra Costa County: $600 to $1,100 per insert window and $1,100 to $2,400 for full-frame, with hillside access and stucco work pushing toward the top of those ranges. The structure of your home matters more than the city line. For an exact number on your project, call (682) 281-2168 for a free written estimate.
Every window replacement in Lafayette comes with our 365-Day Done Right Promise: if the installation isn’t right in the first year, parts and labor are covered and we fix it. On top of that, the window manufacturers’ own warranties apply to glass and frame defects. The promise is in writing on every project, so you’re not relying on a handshake. For more details on your specific window selection, call (682) 281-2168 and we’ll walk you through the warranty line by line.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving Lafayette and the surrounding Bay Area since 2001.










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