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 Berkeley
Impact windows and doors in Berkeley typically run $1,450-$3,200 per opening installed, with whole-home coastal-spec packages for a 1920s hills Craftsman landing between $28,000 and $54,000 depending on the number of openings and whether the Landmark Preservation Ordinance requires custom wood-clad units. Most Berkeley homeowners wait between two and six weeks for permit review plus installation, not because the labor is slow but because the city’s dual code path takes time to move through properly. We’ve worked these Berkeley streets for long enough to know which suppliers stock the marine-grade hardware this climate demands and which inspectors will look for stainless steel flashings on fog-exposed sills. Call (888) 635-0804 and a live person answers, day or night.
Why TruePane Windows & Doors Is Berkeley’s Preferred Impact Windows & Doors Company
Berkeley homeowners tend to ask harder questions than most, and we’re fine with that. When someone in the Elmwood or Claremont hills calls us about impact doors binding at the top corner, they’ve usually had at least one other contractor look and shrug. Our crews know the Hayward Fault creep phenomenon because we’ve measured it across dozens of Berkeley hillside jobs, not because we read about it. We plane jamb edges, adjust hinge mortises, and reinforce sill anchors so the door stays square after the ground keeps moving.
We’re not the cheapest bid in Berkeley, and we won’t pretend to be. What we offer is a square deal: upfront pricing in writing, both manufacturer warranty layers registered before our truck leaves your driveway, and a Done Right Promise that means if something isn’t right we make it right without arguing. Years of glazing craft runs through this company, led by Dale Kessler, a second-generation glazier who still walks jobs in the Berkeley hills personally when a historic home needs careful attention.
Berkeley homeowners call us because we answer the phone. Not a voicemail tree. Not a regional call center. A live person who can tell you whether we can get a technician to your North Berkeley flatlands street today or tomorrow, and what the permit path looks like for your specific address. We dispatch from the Bay Area office, but our Berkeley crews live here, shop here, and drive these streets every day.
Our Impact Windows & Doors Services in Berkeley
Hurricane Impact Windows
Berkeley’s flatlands Victorians and hills Craftsman homes both need impact glazing that handles marine fog without rotting the sill or failing the seal. We install impact-rated windows with fusion-welded vinyl frames or wood-clad units depending on what your house needs and what the Landmark Preservation Ordinance allows. In the hills above Grizzly Peak Boulevard, our crew recently replaced a pair of original double-hung wood sashes in a 1920s Craftsman with impact-rated Simonton vinyl sliders using low-E glass and fusion-welded frames. The original sashes had failed at the bottom rail where marine fog had softened the wood, and the jamb had shifted from fault creep, so we lapped the new slider’s flashing tape with stainless steel drip edge to hold the seal on the stucco sill.

Impact Sliding Glass Doors
Berkeley hills homes need sliding glass doors that stay square when the ground doesn’t. Fault creep along the Hayward Fault moves door frames slowly over years, and an impact slider installed without accounting for that movement will bind at the top corner within one or two seasons. We reinforce the header and set the track on a stainless steel sill pan so the door rides true even as the house shifts. Our Impact Windows & Doors team has installed and adjusted enough of these in the Berkeley hills to know which corners will move first.

Impact Entry & French Doors
Impact entry doors in Berkeley take abuse from two directions: salt-laden fog working the bottom rail from outside, and fault creep racking the frame from below. We specify marine-grade stainless hinges and screws, seal every stile end, and when a French door set goes into a hills home we reinforce the mullion so the two panels don’t fight each other as the floor shifts. A plywood-core door that would last twenty years inland can delaminate inside a decade in Berkeley’s daily fog-sun cycle, which is why we quote solid-core or composite stiles for every exterior French door here.

Impact Garage Doors
Garage doors in Berkeley hills homes don’t just open and close; they sit in wind corridors that whip through the canyons off Grizzly Peak and Panoramic Hill. Impact-rated garage doors need reinforced tracks, heavier bottom seals, and stainless steel rollers to hold up against both the wind load and the persistent moisture. We replace tracks when they’ve been twisted by years of frame movement, not just the door panel itself.

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 Berkeley
We stock inventory and parts for the lines Berkeley homeowners ask for most, including CGI, PGT, and ES Windows. That means when a Berkeley flatlands Edwardian needs replacement impact glazing in a custom size, we aren’t waiting two weeks for a factory order; we often have the frame and glass in our Bay Area warehouse and can bring it to Berkeley the same week. We’re an authorized installer for more than a dozen manufacturers, and we’ll quote you two or three lines side by side on paper so you can see exactly what you’re paying for.
Common Impact Windows & Doors Problems We See in Berkeley Homes
- Rotted sills from persistent marine fog. In the Berkeley flatlands, decades of overnight fog wick moisture into original wood sills, softening the wood until the sash sags and the impact glass can’t seat square. We replace the sill with pressure-treated dimensional lumber or composite and flash it with stainless steel before reinstalling the window.
- Fault-creep racking in hillside door frames. Berkeley is one of the only cities in the East Bay where we routinely diagnose doors that bind with no felt earthquake. Aseismic creep along the Hayward Fault moves hillside homes a few millimeters a year, and an impact entry door installed square will bind at the top corner within one or two years unless the frame is planed and the hinges reinforced.
- De-lamination of plywood-core impact door stiles. The daily thermal swing between Berkeley’s foggy mornings and warmer afternoons makes plywood layers in cheaper exterior doors expand and contract at different rates. After five to ten years, the stiles separate and break the glazing putty, letting water reach the impact glazing unit. We replace those doors with solid-core or composite stiles that don’t de-laminate.
- Failed seals in impact windows installed without coastal-spec hardware. A window installed with galvanized hardware in Berkeley’s fog zone will show rust and seal failure years before the same window would inland. We specify hot-dip galvanized or stainless steel fasteners on every Berkeley impact window job, and we register both warranty layers in writing so the manufacturer can’t blame the hardware.
Pricing for Impact Windows & Doors in Berkeley, CA
Impact window replacement in Berkeley generally runs $1,450-$3,200 per opening, installed. Impact sliding glass doors land between $4,800 and $9,500 depending on the width and track system. Impact entry doors run $3,200-$7,800, and a pair of impact French doors with a reinforced mullion runs $7,500-$14,000. The cost difference between a coastal-spec and inland-spec window is usually $300-$600 per opening, and that’s the cost of stainless steel hardware, marine-grade flashing, and sealants that hold up in Berkeley’s fog. Skip the coastal-spec on an impact window in the flatlands and you’ll be back in seven to ten years with a rusted track and a failed seal. Call (888) 635-0804 for a written quote, itemized, with both warranty layers listed. Estimates are free.
We Also Serve Cities Near Berkeley
TruePane crews work throughout Berkeley and the surrounding East Bay, including Emeryville, Albany, El Cerrito, and Piedmont. If you’re in one of those cities and your impact windows are fogged, your doors bind, or you’re pricing a full replacement before the next storm season, call the same number: (888) 635-0804. We schedule Berkeley and nearby jobs from the Bay Area office, and our Berkeley crew covers those streets without the dispatch headaches of a franchise operation.
Serving Berkeley, CA - Our Local Coverage Area
We’re based in the Berkeley 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 Berkeley
No, Berkeley’s Landmark Preservation Ordinance does not require identical wood sashes on every visible elevation, but it does require that replacement windows on historically designated properties or within certain landmark districts match the original fenestration pattern, mullion profile, and material appearance. Impact-rated wood-clad windows from lines like Marvin or Pella often meet this requirement while giving you the impact glazing and low-E coating that Title 24 requires. We work the permit path for you so the city sees a window that fits the house and the energy code at the same time. Call (888) 635-0804 and we’ll pull the specific requirements for your address.
The Hayward Fault runs directly through Berkeley and produces slow, continuous ground movement called aseismic creep, which racks door frames in hillside homes over years without any felt earthquake. An impact sliding glass door installed square will bind at the top corner as the header and sill gradually shift out of parallel. We adjust hinge mortises, plane the top edge, and reinforce the header on hillside installs specifically to account for this movement so the door keeps sliding clean after the ground moves. Call (888) 635-0804 for a door that’s installed for Berkeley’s geology, not a template.
Yes, the persistent marine layer in Berkeley’s flatlands drives low-level moisture into wood frames and exterior sills, and the daily thermal swing between foggy mornings and warmer afternoons accelerates wood expansion and contraction. That cycling breaks down glazing putty and paint and eventually compromises the seal between the sash and the impact glazing unit. The fix is installing marine-grade fasteners, flashing the sill with stainless steel, and using a window system designed for fog cycles, not just for wind loads.
Yes, impact-rated windows with low-E glass and wood-clad frames can meet Title 24 while matching the original Craftsman proportions, but you need to specify the right glazing package and the right muntin profile. We quote manufacturer lines side by side on paper so you can see which units carry the Title 24 compliance certificate and which ones need a custom exterior profile to match the house. Berkeley’s dual code path is a real burden, but it’s one we’ve walked hundreds of times. Call (888) 635-0804 for exact numbers on your openings.
The coastal-spec version of an impact window or door carries stainless steel hardware, marine-grade flashing, hot-dip galvanized fasteners, and sealed joints that would be overkill inland. That hardware and sealing package adds $300-$600 per opening in Berkeley’s fog zone, and skipping it costs more within a decade when the cheaper galvanized hardware rusts and the seal fails. We quote both specs so you can see the line items and decide with your eyes open. Call (888) 635-0804 for a written line-item quote, free.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Berkeley with impact windows and doors built for fog, fault creep, and a hundred years of weather.



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