Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Sliding & Patio Doors Across Los Gatos
Replacing a sliding or patio door on a Los Gatos home is rarely a simple swap. The Town has two different sets of rules depending on which side of the valley you live on, and the marine-layer fog does not treat door frames kindly. TruePane Windows & Doors has been sorting out exactly these problems for Los Gatos homeowners with Custom Windows & Doors - Los Gatos for years, from downtown Victorians to hillside custom builds. If you need a straight answer about what your home requires before you spend a dime, call (888) 635-0804. We will tell you what is true for your lot.
Our Sliding & Patio Doors crew works Los Gatos weekly. We know the inspection path on both tracks: the CAL FIRE wildland-urban interface review on the hillsides, and the Historic Preservation design sign-off near the downtown. That knowledge is the difference between a door ordered once and a door ordered twice.
Why TruePane Windows & Doors Is Los Gatos’s Preferred Sliding & Patio Doors Company
We are a second-generation glazier’s company, founded by Dale Kessler in 2008, and the way we work has not changed: measure twice, quote both manufacturer lines side by side on paper, register both warranty layers in writing before the truck leaves your driveway. No franchise playbook. No regional call center. When you call TruePane, a live person answers, 24 hours a day, 7 days a week.
The Keystone Standard is what we write into every contract in Los Gatos: both manufacturer warranty layers registered, durations stated, and a Done Right Promise on the labor. If the install is not done right, we make it right, with no paperwork fights and no arguing. Dale’s rule hangs over every job: if the pane is not true, the job is not done.
Los Gatos homeowners tend to keep their houses for decades. They have been burned by a fogged seal or a door that binds in July and they do not want to repeat the experience. Our background-checked, uniformed technicians work in your home the way they would work in their own mother’s. We show up when we say we will, and the price we quote is the price on the bill.
Our Sliding & Patio Doors Services in Los Gatos
Patio Sliding Doors
A patio slider in Los Gatos has to do more than open and close. On the flatlands, it has to resist persistent overnight moisture that creeps up from the Santa Cruz Mountains and rots an unflashed sill in a few seasons. On the hillsides, it has to meet WUI fire-code requirements and hold its seal in stronger wind and wider temperature swings. We quote both standard and impact-rated configurations so you can see exactly what your lot requires.

Panoramic Sliding Systems
Multi-panel panoramic sliders are common in the larger custom homes above town, where the view is part of why you live there. These systems run heavy, and an out-of-true rough opening will cause binding within a year. We flash-tape the jamb, set the track level to the opening, and register both warranty layers before we leave. For hillside lots in Very High Fire Hazard Severity Zones, we spec dual-pane tempered glass and ignition-resistant frames that the county will actually sign off on.

Heavy-Duty Sliding Doors
Outbuildings, shops, and detached ADUs on Los Gatos acreage often need a heavier slider than the main house: wider panels, steel-reinforced frames, rollers rated for daily use. We have installed heavy-duty sliders on plenty of Los Gatos properties where a standard door would have been underbuilt. These doors also need proper drainage at the threshold, especially on graded lots.

Pocket & Barn Doors
Pocket and barn doors are a good solution when a swinging door eats floor space. In Los Gatos ranch homes, a pocket door between the living room and patio is common; in the Craftsman homes near the downtown, a barn door can preserve wall space without fighting the original trim. Our Door Installation - Los Gatos crew handles both, but we are honest about the rough-opening work a pocket door demands. It is not a one-hour job, and we quote it like a real opening, not a hang-and-go.

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 on Los Gatos jobs we regularly quote PGT side by side so you can compare glazing packages, frame material, and warranty language on paper. Los Gatos homeowners with high-spec homes often want aluminum-clad wood or fiberglass rather than vinyl, and we carry fast local parts turnaround for those lines. If you call us about an existing slider that is binding or fogged, we will tell you what brand it is and whether it is worth repairing or replacing before we quote anything.
Common Sliding & Patio Doors Problems We See in Los Gatos Homes
- Fogged IGUs from marine-layer moisture. The fog that rolls into the Los Gatos valley overnight presses moisture into seals that are already failing. Once the argon is gone and the low-E coating is compromised, the glass will never perform again. Replacement is the fix; re-sealing is not a real repair.
- Wood sill rot at the threshold. Older slider installations in Los Gatos often lack proper flashing tape at the jamb. Moisture wicks into the rough opening, and by the time you see the soft spot, the framing underneath needs work. We cut out the rot, flash the opening correctly, and set the new door on a sealed sill pan.
- WUI code mismatch. A homeowner on a hillside lot replaces a slider with a standard dual-pane unit, only to have the county flag it at final inspection for missing tempered glass or an ignition-resistant frame. The whole door gets reordered. We scope the WUI review before we order anything, so this does not happen on our jobs.
- Historic district rejection. In the downtown historic district, installing a contemporary slider with flat muntins on a contributing Craftsman or Victorian will get flagged by design review. The Town requires a divided-light profile that matches the original. We pull assessor records and historical photos before ordering product so the review board sees what it needs to see.
Pricing for Sliding & Patio Doors in Los Gatos, CA
A standard two-panel patio slider replacement in Los Gatos runs roughly $1,800 to $3,800 depending on size, frame material, and glazing. Panoramic multi-panel systems start around $5,000 and climb to $12,000 or more for wide openings with impact-rated glass. Heavy-duty sliders for shops and ADUs typically land between $2,500 and $6,000. Pocket door conversions run $2,200 to $5,500 depending on the rough-opening work. If your project is in a WUI zone or a historic district, the code review may add design and inspection time, and we build that into the quote before you commit. Call (888) 635-0804 for a free estimate, written out line by line.
We Also Serve Cities Near Los Gatos
TruePane serves homeowners across the West Valley, including Sliding & Patio Doors in Los Gatos as well as Saratoga, Campbell, Cupertino, and Santa Clara. If you live just outside the Los Gatos town limits, we still cover your project with the same crew, the same Done Right Promise, and the same on-paper quoting process.
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 - Sliding & Patio Doors in Los Gatos
Yes. Hillside lots in Los Gatos that fall within CAL FIRE’s Very High Fire Hazard Severity Zones require both a building permit and a WUI fire-code review before a sliding door can be installed. The WUI review checks for dual-pane tempered glass, non-combustible or ignition-resistant frame materials, and ember-resistant design details. We scope both reviews before we order product, so the door you buy is the door the county signs off on. Call (888) 635-0804 and we will check your lot against the current fire map.
Possibly, but the Town’s Historic Preservation Ordinance requires design review sign-off for any replacement on a contributing structure, and the review board will flag a contemporary divided-light profile that departs from the original. A large-pane slider with a low-profile track may get approved if the visible muntin pattern and frame depth match the original door. We pull assessor records and historical photos before ordering so the design review sees a compatible profile the first time. Call (888) 635-0804 for a straight read on your property.
The marine-layer fog that settles over the Los Gatos valley overnight pushes persistent moisture into the frame, the threshold, and the glass package. A quality slider with a properly flashed sill pan, a sealed rough opening, and a low-U-factor IGU handles the fog without fogging between panes or wicking rot into the jamb. The install details matter as much as the door itself. We flash-tape every jamb and set every door on a sealed sill pan, because Los Gatos moisture does not forgive shortcuts. Call (888) 635-0804 for a free estimate on a properly sealed slider.
On Los Gatos hillside homes above roughly 500 feet, wider diurnal temperature swings and wind exposure stress the frame-to-rough-opening seals. A drafty slider with binding rollers often means the rough opening has shifted or the frame was never set true. Sometimes an adjustment clears the binding; other times the jamb has pulled away and the opening needs re-flashing. We will inspect the opening, tell you what is wrong in plain terms, and quote the repair or replacement honestly. Call (888) 635-0804.
Yes, in several ways. Detached ADUs and outbuildings on Los Gatos acreage may sit in a different fire zone than the main house, require heavier-duty sliders rated for daily shop use, and often have different drainage and threshold conditions because of grading. County permitting for these structures sometimes applies different WUI or setback reviews than the main dwelling. We scope the outbuilding as its own project before quoting, so the door fits the actual code path and the actual use. Call (888) 635-0804 for an on-site look.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Los Gatos homeowners with straight answers and square deals since 2008.



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