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 Novato
Door Installation - Novato for sliding patio door replacement typically runs $2,800-$7,500 installed, and the job usually takes one day once the unit arrives. That’s the honest range we quote in 94945, and it holds whether you’re in San Marin, Ignacio, or out along the Bel Marin Keys canals. The door itself, the framing condition behind it, and whether the permit triggers a code upgrade are what move the number.
We’ve been pulling old aluminum sliders out of Novato ranch houses long enough to know what’s behind them before we unscrew the first jamb. If you’re tired of a door that sticks in July, fogs between the panes in December, or lets wind-driven rain seep across the kitchen floor, call (888) 635-0804. Dale Kessler built Sliding & Patio Doors around a simple rule: if the pane is not true, the job is not done.
Why TruePane Windows & Doors Is Novato’s Preferred Sliding & Patio Doors Company
We are not a franchise outfit with a rotating cast of subcontractors. TruePane Windows & Doors has been serving local communities since 2008, with Dale Kessler, a second-generation glazier, running the work since 2008. Our technicians are background-checked, uniformed, and trained in-house. When one of them walks a Novato job site, they’ve likely worked the same tract home model three streets over within the past year.
Novato homeowners call us for a reason that has nothing to do with advertising. They call because a neighbor in Hamilton got a straight answer on a fogged patio door, or because a San Marin homeowner watched our crew replace a corroded slider without turning the living room into a construction zone. Our Novato customers know we measure every opening twice, quote manufacturer lines side by side on paper, and register both warranty layers before the truck leaves the driveway. That’s The Keystone Standard. It’s in writing.
Most jobs in Novato are completed in a single visit. The quote is fixed, line by line, before work starts. No surprise line items. No second appointment left hanging. And a live person answers our phone 24 hours a day, 7 days a week. Not a voicemail tree. Not a callback form. A person who can tell you whether Wednesday works.
Our Sliding & Patio Doors Services in Novato
Patio Sliding Doors
A standard two-panel patio sliding door in a 1960s-70s Novato tract home typically runs $2,800-$4,800 installed. The original aluminum units in these houses are well past their service life, and the rollers are usually the first thing to go. We replace the full unit rather than patch a frame that’s already oxidized through in places. New vinyl or fiberglass patio sliders from our Custom Windows & Doors - Novato selection seal tighter, roll quieter, and hold up to Novato’s afternoon valley heat without warping.

Panoramic Sliding Systems
When a San Marin or Bel Marin Keys homeowner wants to open an entire wall to the yard, a panoramic sliding system is the answer. These multi-panel units run $8,000-$18,000 in Novato depending on panel count, glass spec, and framing condition. On a canal-facing elevation in Bel Marin Keys, we default to fiberglass frames with stainless hardware, not as an upsell but as a survival requirement. Aluminum-clad products will not survive the salt air intact, and the warranties will not survive either.

Heavy-Duty Sliding Doors
For larger openings or high-traffic areas, a heavy-duty sliding door in Novato runs $4,500-$9,500. These units carry wider glass lites and reinforced rollers. We see demand for them in the ranch houses around Ignacio where original openings were framed for a standard six-foot slider but the homeowner wants an eight-foot glass panel. That change means new header work, and we inspect the framing before we ever write a final number.

Pocket & Barn Doors
Pocket door installation in a Novato home runs $1,800-$4,200 depending on whether the wall is load-bearing. Pulling an original 1960s pocket door out of a damp wall cavity often means reframing the pocket, replacing the track, and squaring a floor that has settled over fifty years. Barn doors, typically $1,400-$2,800, are a pragmatic option in the converted Hamilton historic district where preserving original trim and sightlines matters to the design-review board.

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 Novato
We install and service patio doors from more than a dozen manufacturer lines, including Andersen, Pella, Marvin, and Milgard. For Novato’s specific conditions, we also stock parts for PGT and CGI impact-rated units. When a Bel Marin Keys homeowner needs a replacement roller or latch for a door that has been fighting salt spray for a decade, we typically have the part on the truck or available within a day. We quote manufacturer lines side by side on paper so you can see exactly what you’re buying and what each warranty actually covers.
Common Sliding & Patio Doors Problems We See in Novato Homes
- Oxidized aluminum frames seize shut. On canal-facing Bel Marin Keys elevations, aluminum sliding door frames show heavy oxidation and pitting within 8-12 years. The rollers corrode, the track pits, and the door eventually will not move without a crowbar. We replace those units with fiberglass or vinyl frames and composite hardware that will not corrode.
- Fogged glass in 1990s retrofit double-pane patio doors. Novato sits in an interior Marin valley and runs hotter on summer afternoons than Mill Valley or Sausalito. That heat accelerates thermal-seal failure, so we see a disproportionate share of fogged 1990s patio doors with dead argon fill. Once the seal fails, the door is not repairable; the glass unit must be replaced or the whole door rebuilt.
- Wind-driven rain penetration on west- and northwest-facing walls. The hills around Novato channel strong afternoon marine winds through the valley. Deteriorated door sills and original aluminum flanges let that water behind the jamb, where it rots the subfloor framing. By the time the homeowner sees a stain, the framing behind the door is usually compromised.
- Rotted framing behind the jamb. Pulling an original 1960s slider in Novato almost always reveals gaps in the rough opening, missing flashing, or decayed wood around the threshold. We inspect before we quote, write allowances into the contract for what we expect to find, and send every surprise line-item to the homeowner in writing before we touch it.
Pricing for Sliding & Patio Doors in Novato, CA
Here is what Novato homeowners should expect to pay in 2026.
- Standard two-panel patio slider replacement: $2,800-$4,800
- Heavy-duty sliding door: $4,500-$9,500
- Panoramic sliding system, multi-panel: $8,000-$18,000
- Pocket door replacement: $1,800-$4,200
- Barn door installation: $1,400-$2,800
- Full perimeter flashing tape and sill pan replacement: $300-$700 added at time of install
What changes the number is what’s behind the door. A clean rough opening with solid framing keeps the job at the low end. Rotted around the jamb, missing flashing, or an undersized header pushes it up. A permit, where required, adds $400-$900 in plan review and inspection fees to the total. We pull the permit ourselves, and we pass no inspection until the work is done right. Call (888) 635-0804 for a free written Window Installation - Novato estimate, line by line. The price we quote is the price we honor.
We Also Serve Cities Near Novato
Our crews serve Novato and the surrounding Marin and Sonoma communities on the same schedule. We work regularly in Fairfax, San Anselmo, Petaluma, and San Rafael, and we coordinate dispatch and scheduling from our San Francisco Bay Area office. If you live outside 94945 but need the same straight-answer approach to a patio door that will not close, Sliding & Patio Doors in Novato is still the team to call. Reach us at (888) 635-0804.
What Actually Happens When We Pull an Old Novato Slider
Here is the part most contractors will not tell you until the door is on the ground. Opening up an older Novato home exposes outdated wiring, undersized framing, failed waterproofing, and code upgrades that a permit triggers once the wall is open. This is the single biggest reason a door replacement quote moves after work begins, and it is the reason cheap bids get homeowners into trouble.
In Bel Marin Keys, Novato’s 1960s canal community draining to San Pablo Bay, salt-air exposure oxidizes aluminum sliding door frames and corrodes steel hardware within 8-12 years, far faster than anywhere else in Marin County. We default to fiberglass or vinyl frames with composite hardware there because it is the only honest choice. An aluminum-clad door on a canal-facing elevation is a warranty claim waiting to be denied.
Our crew replaced a corroded aluminum sliding patio door on a canal-facing ranch in Bel Marin Keys where the jamb had pitted through and the sash would not seal against wind-driven rain. We pulled the old unit, replaced the rotted framing around the opening, and installed a Milgard fiberglass panoramic sliding system with stainless hardware. The homeowner now opens the door without a crowbar, and the new flashing tape keeps winter storms out.
Our process starts with an inspection, not a sales pitch. We check the rough opening, the header, the floor framing, and the flashing before we write a quote. Allowances for what we expect to find are written into the contract. If we find something we did not anticipate, you get a written change order with a price and a signature line before we proceed. No one touches your home without your approval. That’s a square deal.
Serving Novato, CA - Our Local Coverage Area
We’re based in the Novato 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 Novato
Salt air from the San Pablo Bay canals oxidizes aluminum frames and corrodes steel hardware, usually within 8-12 years. The concentrated waterfront exposure in that neighborhood accelerates corrosion far faster than anywhere else in Marin County. If you live on a canal-facing elevation in Bel Marin Keys, choose fiberglass or vinyl frames with composite hardware from day one. That is the only material spec that survives the salt air. For a specific recommendation on your elevation, call (888) 635-0804 for a free estimate.
Once the seal has failed and the glass fogs between the panes, the argon fill is gone and the insulating value is gone with it. The unit is not repairable. You either replace the glass pack if the frame is still sound, or replace the entire door if the frame has also deteriorated. In Novato’s interior valley heat, a failed seal is common on 1990s retrofit doors. We’ll give you a straight price for both options, side by side, before you decide. Call (888) 635-0804.
In most cases, yes. The original six-foot opening in a 1960s ranch was not framed for an eight- or ten-foot panoramic unit, so the job typically requires a new engineered header and some reframing. We inspect the existing header and floor framing before we quote, and we write the structural allowance into the contract. The result is a dramatic improvement, but the structural work is what makes the number honest. For a free estimate on your San Marin home, call (888) 635-0804.
When the opening size changes, or when structural framing is touched, yes, a permit is typically required in Novato. Same-size replacement doors that do not alter the rough opening or header generally do not require one, but if we find failed framing, the permit discussion changes quickly. We pull permits ourselves, schedule the inspections, and do not call the job done until the inspector signs off. The permit fees are listed on your written quote. Call (888) 635-0804 if you want us to check the specifics on your home.
A fiberglass-frame panoramic slider with stainless steel hardware and composite rollers. That is the only configuration we install on canal-facing elevations in Bel Marin Keys because it is the only one that resists the salt-air oxidation that destroys aluminum frames within a decade. Milgard and PGT both make suitable fiberglass lines, and we will quote them side by side on paper so you can see the exact warranty terms next to the price. Estimates are free. Call (888) 635-0804.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Novato and Marin County with years of glazing craft.



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