Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Impact Windows & Doors Across Lafayette
Impact windows and doors in Lafayette typically run $1,850-$4,600 per opening installed, and most TruePane jobs take one to two days on site once the units arrive. Lead times on impact-rated glass are running 6-10 weeks from order, so the smart move is to schedule a site measure now and lock your place in the production queue. We’ve worked the hillside streets above the BART line, the flat ranch tracts off Moraga Road, and the custom builds looking out toward Las Trampas, so we know what Lafayette building officials actually check before they sign a permit. Call (888) 635-0804 for a free written estimate.
Why TruePane Windows & Doors Is Lafayette’s Preferred Impact Windows & Doors Company
TruePane has been installing and replacing windows for Lafayette homeowners long enough to know that the town’s inland heat and CAL FIRE’s Very High Fire Hazard Severity Zone zone create a code puzzle most window companies never see. The work is not just Title 24 energy compliance. It is fire-rated glazing, dual-pane tempered glass minimums, and sometimes intumescent door seals that a flat-valley job in Walnut Creek would never trigger. Dale Kessler founded this company on a rule that is still on the whiteboard: if the pane is not true, the job is not done. That applies as much to a hillside custom glass wall as it does to a 1960s double-hung.
Lafayette customers deal with our background-checked, uniformed technicians who measure every opening twice and put manufacturer quotes side by side on paper. We register both warranty layers in writing before the truck leaves the driveway, under our Keystone Standard. That means the manufacturer’s glass warranty and the frame warranty are both on record, with durations stated, the same day we install. A live person answers the phone 24 hours a day, 7 days a week. Not a callback form, not a voicemail tree. If something goes wrong inside the first 90 days, the Done Right Promise means we make it right, no paperwork fight.
Our Impact Windows & Doors Services in Lafayette
Impact Entry & French Doors
Many Lafayette ranch homes from the 1950s and 1960s still carry original wood French doors that have warped under decades of inland sun and Diablo wind pressure, which is why homeowners often explore Custom Windows & Doors in Lafayette for a proper replacement. We replace them with impact-rated units built on reinforced frames, and we handle the hinge-side shimming that older slabs almost always need. For homes in the hillside VHFSZ, we check whether the door assembly requires intumescent seals before the inspector arrives. A well-built impact French door in Lafayette should close square in July and stay sealed when the fall winds start pushing heat and dust against it.

Impact Sliding Glass Doors
Our Sliding & Patio Doors in Lafayette are designed for split-level and ranch homes where standard units tend to bind in summer because the aluminum tracks expand under the inland heat. That is a frame problem, not a glass problem, and it is why we inspect the entire opening before recommending a replacement. Impact-rated sliding doors using PGT or CGI lines can carry the wind load ratings these hillside exposures demand. We spec the low-SHGC glass packages that make sense at 98°F, not the coastal packages that would be overkill two ridges west but too weak here.

Wind Mitigation & Code Compliance
This is the service most Lafayette hillside homeowners don’t know they need until the permit office asks for it. CAL FIRE’s Very High Fire Hazard Severity Zone designation means a window or door replacement above the BART line toward Reliez Valley often requires dual-pane tempered glass and documented flashing details that show no ember-intrusion gaps. We pull permits, schedule the inspections, and walk the job through sign-off. The paperwork matters because your insurance carrier reads it. If the pane is not true, the job is not done, and if the permit file is incomplete, the insurance underwriter treats it the same way.

Impact Garage Doors
Garage openings in Lafayette’s colonial-revival homes are often the weak point in the fire-resistance envelope. Impact-rated garage doors with reinforced tracks and wind-load bracing are a growing request from homeowners who already replaced windows and are now addressing the biggest opening in the house, often after installing our Glass Railing Systems in Lafayette on upper decks. We coordinate the door panel spec with the surrounding window package so the SHGC and low-E performance stay consistent across the whole elevation.

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 Lafayette
We are an authorized installer for more than a dozen manufacturer lines, including PGT, CGI, and CWS, and we quote them side by side on paper so you can see the actual differences in glass package, frame material, and warranty coverage. No smoke. We maintain strong relationships with these manufacturers’ warranty departments, which means when a Lafayette homeowner needs a replacement sash or a seal inspection, the paperwork doesn’t sit on a desk for three weeks. Our Impact Windows & Doors team stocks the common hardware and weatherstripping profiles for these lines, so most service calls here finish in one visit.
Common Impact Windows & Doors Problems We See in Lafayette Homes
- Corroded aluminum single-pane frames. Lafayette’s 1950s-1970s ranch and split-level homes are full of original aluminum windows that now pit at the corners and conduct heat straight into the house. Full frame replacement is usually the answer, because a sash-only retrofit doesn’t fix the failed Title 24 performance or the corrosion in the jamb.
- Fogged insulated glass from UV-fatigued seals. Lafayette gets 30-40°F hotter than San Francisco on a typical summer afternoon, and that inland sun breaks down the sealant on older insulated glass units years before a coastal home would see the same failure. Argon escapes, the glass fogs, and the only fix is new glass, not a cleaning.
- Hillside custom fixed-glass and clerestory assemblies. The larger custom builds from the 1980s and 1990s often have big fixed panes that were never designed for impact ratings. Retrofitting them to meet CAL FIRE VHFSZ standards sometimes requires reframing the entire opening if the existing jamb isn’t square or non-combustible. We inspect the framing, not just the glass.
- Weatherstripping fatigued by Diablo wind events. The hot, dry fall winds that push through the Lamorinda corridor desiccate rubber seals and expose gaps around doors and windows. In fire season, every gap is a potential ember entry point. We test the seals during the estimate, not after the job is done.
Pricing for Impact Windows & Doors in Lafayette, CA
A typical impact-rated double-hung window in Lafayette runs $2,100-$3,800 installed, depending on size and glass package. Impact sliding glass doors run $4,200-$8,500, and impact entry or French doors run $5,000-$11,000. what moves the number is the SHGC spec, whether the opening requires tempered glass for VHFSZ compliance, and whether the existing framing can carry an impact-rated unit without reframing. Lafayette’s hillside homes with custom fixed-glass assemblies land at the top of those ranges because the openings are larger and the code requirements stricter. We give you a written, line-item quote before we order anything, and that number does not change after work starts. No surprises on the bill. Call (888) 635-0804 to schedule a free measure and estimate.
We Also Serve Cities Near Lafayette
TruePane serves Impact Windows & Doors in Lafayette and the surrounding Lamorinda corridor, including Walnut Creek, Orinda, Moraga, and Pleasant Hill. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews serve Lafayette locally. If you’re in a neighboring city and want the same written-quote process and Keystone Standard warranty registration, we’re already working those streets.
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 - Impact Windows & Doors in Lafayette
Homes in Lafayette’s Very High Fire Hazard Severity Zone must meet CAL FIRE VHFSZ requirements, not just Title 24. That means dual-pane tempered glass minimums and, for doors on some hillside properties, intumescent seals. Flat areas of Lafayette may only need Title 24, but any street above the BART line toward Reliez Valley is worth checking before you order. We confirm the VHFSZ status during the site visit so you don’t buy glass that fails inspection. Call (888) 635-0804 for a free assessment.
Lafayette sits in an inland heat pocket east of the Oakland Hills, where summer temperatures routinely hit 95-100°F while Oakland stays in the 60s on the same day. The solar heat gain coefficient on Lafayette windows should be tuned lower than a coastal spec, usually 0.25 or under, so the glass actually blocks the inland sun instead of turning the living room into a greenhouse. We quote SHGC numbers on every line item. Call (888) 635-0804 and we’ll show you the numbers on paper.
Impact-rated windows with tempered glass and properly sealed flashing tape details will block the vast majority of wind-driven embers, which is exactly what the CAL FIRE VHFSZ code intent requires. The weak points are the gaps, not the glass. We seal every flashing tape edge and inspect the entire frame for ember-intrusion gaps before the final inspection. If you’re in the hillside zone and want the envelope checked, call (888) 635-0804 for a free visit.
In most cases, no. Lafayette’s original aluminum frames from the 1950s through 1970s are typically corroded at the corners, conduct heat badly, and were never designed to carry the weight or wind load of impact-rated glass. A sash-only retrofit usually leaves the frame failing Title 24 and the VHFSZ permit unresolved. Full frame replacement is the honest fix. We’ll show you the condition on site before you spend a dollar. Call (888) 635-0804 to schedule our Impact Windows & Doors team.
Sometimes yes, sometimes no. The deciding factor is whether the existing jamb is square and whether the framing material is non-combustible. On a 1960s colonial-revival home off Moraga Road in Lafayette, our crew replaced corroded aluminum-frame single-pane windows with ViewLux impact-rated casement and double-hung units using low-E glass with an SHGC tuned to Lafayette’s inland heat. The homeowner needed CAL FIRE VHFSZ compliance, so every sash and jamb carried tempered glass, and we sealed all flashing tape details to eliminate ember-intrusion gaps before winter Diablo wind events. That job held its original openings. Other hillside jobs don’t. The only way to know is to inspect the framing. Call (888) 635-0804 and we’ll tell you straight what you’re working with.
Written by Dale Kessler, Owner at TruePane Windows & Doors.



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