Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Installation Across Orinda
Window installation in Orinda carries a specific set of demands most Bay Area contractors never see. Hillside lots inside a Very High Fire Hazard Severity Zone mean fire-code compliance is not optional. Non-standard rough openings in 1950s through 1970s custom homes mean stock sizes rarely fit. And summer heat that pushes past 100°F on south-facing elevations means glass selection matters more here than it does ten miles west. We know all of this because we work these hills every week. If you’re planning a window replacement or new installation in the 94563 zip code, call us at (888) 635-0804 and we’ll walk you through what your specific house actually needs.
Why TruePane Windows & Doors Is Orinda’s Preferred Window Installation Company
We’re not a franchise operation dropped into the East Bay with a marketing budget. TruePane Windows & Doors was founded in 2008 by Dale Kessler, a second-generation glazier who still runs the company. The standard on every job, including every window we set in Orinda, comes from the rule he keeps on the whiteboard: if the pane is not true, the job is not done.
Orinda homeowners consistently tell us the same two things. They’ve been burned before by crews who showed up late, left sawdust in the living room, and never answered the phone when a seal failed. And they’re relieved to find a company where a live person answers the phone 24 hours a day, 7 days a week. No voicemail tree, no callback form, no regional call center. You call, a person picks up.
Our technicians are background-checked and uniformed. They measure every opening twice. They quote manufacturer lines side by side on paper before you commit to anything. And they register both warranty layers in writing before the truck leaves your driveway. That’s The Keystone Standard, and it governs every install we do along Moraga Way, Miner Road, and throughout Orinda’s hillside neighborhoods.
We also carry the Done Right Promise on every job. If it’s not done right, we make it right. No paperwork fights, no arguing, no fine print that covers neither. That’s a square deal, and it’s what Orinda homeowners deserve.
Our Window Installation team serves Orinda directly, with scheduling coordinated from our San Francisco Bay Area office. When you call, you’re talking to someone who knows the difference between a WUI-compliant install and a flatland window swap.
Our Window Installation Services in Orinda
Different houses in Orinda need different window solutions. A mid-century rancher on a shaded lot off Glorietta Boulevard has different needs than a hillside contemporary off Camino Pablo. Here’s how we approach the four most common window types we install across Orinda.
Casement Windows
Casement windows are the workhorse of Orinda’s hillside homes, and for good reason. They seal tightly against wind-driven embers, which matters in a fire hazard zone. They also offer the best natural ventilation when Orinda’s inland valley heat builds through the afternoon. We install casements with fusion-welded frames and dual-pane tempered glass as standard in 94563. The WUI review that Contra Costa County requires on many hillside lots in Orinda means tempered glass is often mandatory, not an upgrade. We spec it up front so you’re not surprised at inspection.

Fixed & Picture Windows
Orinda homeowners choose fixed and picture windows for the canyon views, and we understand why. A properly set picture window framed with low-E glass lets you enjoy those ridgeline sightlines without baking the living room. But fixed windows on south- and west-facing elevations here take a beating from 95-105°F summer sun. We spec glass with a lower solar heat gain coefficient for those exposures, so the room stays comfortable and the HVAC doesn’t work overtime. For north-facing picture windows where winter fog settles in, we use glass packages designed to resist condensation.

Bay & Bow Windows
Bay and bow windows are common in Orinda’s 1960s custom homes, particularly in living rooms and dining rooms that were designed around the view. These installations are trickier here than most contractors expect. The original wood framing around the bay often shows rot from decades of canyon moisture, and the rough openings are rarely square after fifty years of hillside settling. We rebuild the supporting structure before we set the new unit, then flash and seal every joint with materials rated for WUI exposure. A bay window that isn’t properly supported will sag within a few years, and you’ll feel the draft every winter.

Awning Windows
Awning windows work well in Orinda because they can be opened during rain without letting water pour in, which matters when winter fog turns to drizzle and you still want air moving through the house. We install awnings with stainless steel hardware and compression seals that hold up against repeated moisture cycles. On north-facing elevations where fog condensation is a constant, we recommend frame materials that don’t absorb water. Wood frames on shaded Orinda hillsides rot faster than almost anywhere else in the East Bay.

What happens when you call
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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 Orinda
TruePane is an authorized installer for more than a dozen manufacturer lines, including, PGT, and CGI. For Orinda’s WUI requirements, we frequently recommend CGI and ES Windows because they offer tempered, impact-rated, and ember-resistant assemblies that pass Contra Costa County’s fire-hardening review without compromise. We also stock local parts and hardware for Orinda customers, which means faster turnaround on repairs and replacements. When you’re comparing quotes, we’ll put manufacturer options side by side on paper so you see exactly what you’re buying and what each warranty actually covers.
Common Window Installation Problems We See in Orinda Homes
- Rotted wood frames on north-facing elevations. Winter fog and canyon moisture settle into shaded sides of Orinda homes, keeping window frames damp for months. We regularly rebuild jambs with composite materials and stainless hardware before installing the new unit.
- Failed seals on original single-pane windows. Most Orinda homes built in the 1950s through 1970s still carry original single-pane sashes. After decades of 100-degree summers followed by cold fog, the seals fail and the glass fogs. Replacement is the only real fix.
- Non-tempered glass on hillside lots flagged by WUI review. Contractors without Contra Costa County fire-code experience install standard single-pane replacements and the job fails inspection. Tempered, dual-pane glass is required on many Orinda hillside lots, and we spec it from the start.
- Warped frames on south- and west-facing windows. The same house can have rotted frames on the north side and heat-warped frames on the south side. That differential deterioration is normal in Orinda, and it means every window needs individual evaluation rather than a one-size-fits-all quote.
Pricing for Window Installation in Orinda, CA
In Orinda, a standard dual-pane casement window replacement typically runs $850-$1,500 per window including installation, depending on size and whether the existing frame needs rebuilding. Fixed and picture windows run $600-$1,800 per unit, with larger view windows on the higher end. Bay and bow window installations in Orinda typically run $4,000-$9,500 because they require structural support work and custom flashing. If your hillside lot triggers a WUI fire-hardening review, expect tempered glass and ember-resistant frames to add $150-$400 per window over standard dual-pane. These are real ranges for the 94563 market based on what we quote and install here. The cheapest spec will not pass county inspection on a hillside lot, and you’ll pay for it twice. Call (888) 635-0804 for a free estimate with a written line-item quote, no surprises on the bill.
We Also Serve Cities Near Orinda
Beyond Orinda, our window installation crews work regularly in Lafayette, Moraga, Piedmont, and Walnut Creek. Each of these areas has its own microclimate and building code considerations, but the same Keystone Standard applies to every job we take. If you’re in a neighboring city and wondering whether your windows need WUI-compliant materials, call and ask. A live person will answer.
Serving Orinda, CA - Our Local Coverage Area
We’re based in the Orinda 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 Installation in Orinda
Yes, in many cases a window swap on a hillside Orinda lot inside the Very High Fire Hazard Severity Zone triggers a WUI review by Contra Costa County, which requires tempered glass, ember-resistant frame materials, and upgraded threshold seals. Flatland cities like Lafayette or Walnut Creek often do not face this requirement. We prepare all WUI paperwork and spec materials so your install passes on the first inspection. Call (888) 635-0804 for an exact quote on your specific lot.
North-facing windows in Orinda rot faster because winter fog and canyon moisture settle on shaded elevations and keep wood frames damp for months at a time, while south- and west-facing elevations bake dry in the summer heat. This uneven exposure means the same house can have rotted jambs on one side and heat-warped frames on the other. We rebuild rotted north-facing jambs with composite materials and stainless hardware before setting the new glass. For a full evaluation, call (888) 635-0804.
For Orinda’s hot inland summers, we typically specify dual-pane glass with a low solar heat gain coefficient on south- and west-facing elevations to block 95-105°F heat gain, and we use condensation-resistant glass packages on north-facing elevations where winter fog settles. This means not every window on the same house gets the identical spec. We quote the glass package per elevation, not as a blanket upgrade. Call (888) 635-0804 and we’ll walk you through what your house needs.
Most original 1960s windows in Orinda were set into non-standard rough openings that will not accept modern stock sizes, so custom fabrication or opening modification is usually required. We measure every opening twice before ordering, and we fabricate custom units through our manufacturer partners when needed. A standard-size unit forced into a non-standard opening will leak and fail. Call (888) 635-0804 for a free measurement and quote.
In Orinda’s fire hazard zone, upgrading to dual-pane tempered windows with ember-resistant frames can help you retain insurance coverage and may reduce premiums, because many carriers in 94563 have conditioned continued coverage on fire-hardened assemblies. Every policy is different, so we recommend confirming the savings with your carrier, but the code compliance and coverage protection alone make the upgrade worthwhile for most Orinda homeowners. Call (888) 635-0804 to discuss the right spec for your hillside lot.
Call TruePane Windows & Doors at (888) 635-0804 for a free window installation estimate in Orinda. A live person answers, every time.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Orinda since 2008.



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