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 Los Gatos
Impact window and door replacement in Los Gatos typically runs $1,400-$4,200 per opening depending on the product line, frame material, and whether the home sits in a wildfire zone or the historic district. Most single-opening replacements are completed in one day, while whole-home projects take three to seven days once the product arrives. If you’re weighing impact windows and doors in Los Gatos, call (888) 635-0804 for a free, written estimate with the brands side by side on paper.
We work in this town every week. Our crews know Los Gatos streets, the hillside switchbacks above Highway 17, the flatlands along Los Gatos Boulevard, and the older blocks near Almond Grove where a 1920s Craftsman can sit three doors down from a 1970s ranch. That local knowledge matters when the Town’s design review board wants to see historical photos before they’ll sign off on your window order. We know the process because we’ve been through it on homes in 95030 more times than we can count.
Why TruePane Windows & Doors Is Los Gatos’s Preferred Impact Windows & Doors Company
We’re not a franchise operation trying to figure out Los Gatos on the way in from somewhere else. Dale Kessler founded TruePane in 2008 on a rule he keeps on the whiteboard: if the pane is not true, the job is not done. That standard governs every impact window and door we set in this town, from a single French door on a downtown Victorian to a whole-hillside glass wall above the fog line.
Our technicians are background-checked, uniformed, and trained as apprentices into journeymen. They measure every opening twice. They quote manufacturer lines side by side on paper so you see exactly what you’re buying and why it costs what it costs. Before our truck leaves your Los Gatos driveway, both manufacturer warranty layers are registered in writing with their durations stated. That’s The Keystone Standard, and it applies to every job we do.
We answer the phone with a live person, 24 hours a day, 7 days a week. Not a voicemail tree, not a callback form. When a Los Gatos homeowner calls about a fogged impact window or a door that binds after the first hot week in July, someone picks up. That’s been true since 2008, and it will be true in thirty years. We plan to be here that long.
Our Impact Windows & Doors Services in Los Gatos
Here’s what we install, replace, and service across Los Gatos. Each of these passes through the same hands: measured twice, quoted on paper, installed to the Keystone Standard.
Hurricane Impact Windows
Most Los Gatos homeowners aren’t bracing for a Category 4, but the same laminated glass that meets Miami-Dade wind codes also resists forced entry and quiets highway noise from 17. On hillside lots above roughly 500 feet, we commonly spec impact-rated dual-pane units with low-E coatings and argon fill. The stronger diurnal temperature swings up there stress frame-to-rough-opening seals, so we use flashing tape at every rough opening before the new jamb goes in.

Impact Sliding Glass Doors
Sliding glass doors on Los Gatos hillside homes face two problems: wind exposure that torques the frame and marine-layer fog that works on the seals. We install impact-rated sliders from PGT, CGI, and ES Windows that hold their line in wind and resist the persistent nighttime moisture that settles against the Santa Cruz Mountains. If your existing slider has condensation between the panes or a track that’s gone soft from rot, we’ll tell you straight whether it’s a repair or a replacement.

Impact Entry & French Doors
French doors on older Los Gatos homes near the historic district are where the design review process matters most. The Town wants original divided-light profiles and frame depth that match the house. We’ve pulled assessor photos to match old muntin grids before ordering product, and we’ve passed design review on the first submittal by doing that homework up front. Impact-rated French doors give you laminated glass that won’t shatter on impact and hardware that actually lines up when the door is closed.

Impact Garage Doors
Impact-rated garage doors on hillside Los Gatos lots do double duty: they brace the largest opening in the house against wind pressure and they keep embers out during wildfire season. We install braced track systems and impact-rated panels that meet current code, and we’ll tell you honestly if your existing opener can handle the added weight or if it needs to be replaced alongside the door.

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 Los Gatos
TruePane is an authorized installer for more than a dozen manufacturer lines, and for Los Gatos homes we most often quote PGT, CGI, and ES Windows. Each has a specific place in this market. PGT’s impact lines are workhorses for hillside wind exposure. CGI offers strong laminated-glass value for the money. ES Windows gives us the clean sightlines and slender frames that older homes and custom builds want. We stock common parts and hardware locally so warranty work doesn’t stall waiting on a shipment across the country. When we present your quote, the brands are side by side on paper, with both warranty layers registered before we leave your driveway.
Common Impact Windows & Doors Problems We See in Los Gatos Homes
- Fog between the panes on hillside homes above 500 feet. The marine layer doesn’t just sit on the valley floor. On hillside lots it combines with big diurnal temperature swings to accelerate IGU seal failure. We see fogged double-pane units in Los Gatos hillside homes at higher rates than down in Campbell or Los Altos.
- Rotted wood sills on pre-1940s homes near the historic district. Nighttime fog channels into the Los Gatos valley harder than it reaches neighboring cities, and it settles on old-growth wood sills and jambs. By the time we’re called, the rot is usually well past caulking stage and needs full sill replacement before a new impact window can be set.
- Design review rejections on muntin profiles. A homeowner orders standard impact windows, and the Town’s Historic Preservation Ordinance review flags the muntin profile or frame depth as visually incompatible with the original Craftsman or Victorian sash. That’s a costly reorder. We pull assessor photos before we order anything on a contributing structure.
- Flashing failures on steep hillside lots. Wind-driven rain finds any gap in the frame-to-rough-opening seal. On homes with steep grades and no step flashing at the rough opening, we regularly see water staining inside the wall assembly around the window. We fix the flashing properly before the new unit goes in, not after the first winter storm.
Pricing for Impact Windows & Doors in Los Gatos, CA
Here are straight numbers for the Los Gatos market. A standard impact-rated double-hung window runs $1,400-$2,400 per opening installed. Impact sliding glass doors run $3,200-$5,800 depending on width and frame material. Impact entry or French doors run $2,800-$6,500 per door, and impact garage doors run $3,500-$8,000 including a braced track system. Historic district homes on contributing structures typically add $400-$900 per opening for the custom muntin profiles and deeper frames that design review requires. Hillside wildfire-zone work with dual-pane tempered glass and ignition-resistant frames typically adds 15-25% over flatland pricing. The estimate is free, the numbers are in writing, and we stand behind them. Call (888) 635-0804 for a square deal on your project.
We Also Serve Cities Near Los Gatos
Our crews cover the neighboring South Bay communities of Saratoga, Campbell, Cupertino, and Santa Clara. If you’re outside 95030, read more about how we serve the broader area on our Impact Windows & Doors in Los Gatos page, or see the full scope of our work on the Impact Windows & Doors service hub. Wherever you are in the South Bay, the same Keystone Standard applies, and the same live person answers the phone.
Serving Los Gatos, CA - Our Local Coverage Area
We’re based in the Los Gatos 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 Los Gatos
Yes. Hillside lots in Los Gatos that sit in a CAL FIRE Very High Fire Hazard Severity Zone require replacement windows and doors to meet WUI (Wildland-Urban Interface) fire codes, which means dual-pane tempered glass, non-combustible or ignition-resistant frames, and ember-resistant design. The permit is pulled through the Town of Los Gatos, but the review is against county fire code standards. TruePane pulls the permit, schedules the inspection, and stands behind the work through closeout. Call (888) 635-0804 and we’ll tell you exactly what your hillside lot requires.
No. Impact windows can be manufactured with custom muntin grids and frame depths that match the original divided-light sash. We’ve replaced windows on 1920s Craftsman bungalows near the Almond Grove district where we pulled assessor photos to match the old muntin grid, ordered custom impact-rated glazing with low-E glass and argon fill, and passed design review on the first submittal. The key is ordering the right product the first time. Call (888) 635-0804 to talk through what your house needs.
The Santa Cruz Mountain terrain channels marine-layer fog directly into the Los Gatos valley more aggressively than it reaches neighboring cities, and hillside homes above roughly 500 feet get stronger diurnal temperature swings on top of that. The combination accelerates IGU seal failure, so condensation between panes shows up years earlier than you’d see on a comparable home in Campbell. If your windows are fogged, we’ll tell you straight whether it’s a seal repair or a full replacement. Call (888) 635-0804 for an assessment.
Yes, and the two code tracks overlap. Impact-rated windows with laminated glass satisfy the wind-borne debris requirements, while the same units with tempered glass and ignition-resistant frames satisfy the wildfire code. A properly specified impact window meets both at once, but the product has to be ordered that way from the manufacturer. Not every impact window on the market is tempered, and not every tempered window is impact-rated. Call (888) 635-0804 and we’ll quote the right unit for your specific hillside lot.
Design review adds two to six weeks to a typical impact door replacement timeline on a contributing structure. The Town’s Historic Preservation Ordinance requires a review sign-off before installation, and inspectors will flag a door whose frame depth or panel profile visually departs from the original. We pull historical photos and assessor records before ordering, which prevents the reorder that burns time and money. Call (888) 635-0804 and we’ll scope the whole process for your home, including the design review step, before you commit to anything.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Los Gatos and the South Bay with impact windows and doors since 2008.



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