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 Sherman Oaks
Impact window and door replacement in Sherman Oaks typically runs $900-$2,800 per opening, depending on whether the home sits on the flat Valley floor or in the hillside fire zone south of Ventura Blvd. We’ve worked this zip code since 2008, and we know the difference between a ranch in 91403 that needs a straight swap and a hillside parcel that’s going to trigger a fire-code glazing review the moment the permit hits the city desk. Our crews serve Sherman Oaks from the Los Angeles office, and we stock common impact-rated frame sizes for the 1950s-70s housing stock that dominates this neighborhood. If you want a free, written, line-item estimate, call (888) 635-0804.
Why TruePane Windows & Doors Is Sherman Oaks’s Preferred Impact Windows & Doors Company
Dale Kessler founded TruePane in 2008 because he kept seeing the same two failures on Sherman Oaks jobs: installers who shimmed a racked rough opening and called it square, and sales crews who never mentioned that a hillside address south of Ventura Blvd would need fire-resistive glazing to pass inspection. Forty-two years of glazing craft sits behind every install, and our Impact Windows & Doors team works the way a second-generation glazier’s crew should: measure the opening twice, quote the manufacturer lines side by side on paper, and register both warranty layers in writing before the truck leaves the driveway. That’s The Keystone Standard, and it’s how we’ve earned a strong local reputation across Sherman Oaks without ever chasing the cheapest-bid business.
Our technicians are background-checked and uniformed. They work in a customer’s home the way they would work in their own mother’s. When you call, a live person answers, 24 hours a day, seven days a week. Not a voicemail tree. Not a callback form. A person who knows what a Northridge-racked jamb looks like and can tell you over the phone whether you’re looking at a standard replacement or a fire-code-compliant rebuild.
Our Impact Windows & Doors Services in Sherman Oaks
We install, replace, and service impact-rated windows and doors across all of 91403, from the Valley floor north of Ventura Blvd up the southern slopes into the Santa Monica Mountain foothills. Each opening gets the same treatment: inspection first, written allowances for the surprises older Sherman Oaks houses hide, and a price you sign off on before we cut anything.
Hurricane Impact Windows
Sherman Oaks is not a coastal hurricane market, but the fire hazard severity zone south of Ventura Blvd changes what “impact-rated” means here. California Building Code requires ember-resistant, fire-rated glazing on hillside parcels, and we handle that dual compliance every day. We quote PGT and CGI lines side by side, explain which assembly satisfies both the fire reviewer and Title 24 energy thresholds, and register both warranty layers before we leave the driveway.

Impact Sliding Glass Doors
Those single-pane aluminum sliders that came with a 1960s ranch on Valley Meadow Road are exactly the Sherman Oaks Sliding & Patio Doors we replace most. The San Fernando Valley heat basin pushes summer temperatures 10-15°F above the Westside, and aluminum frames expand until the sash binds. An impact-rated Simonton or ES Windows slider with low-E glass fixes the binding and cuts the heat load. If the rough opening racked during Northridge, we rebuild the jamb before we set the new frame. No caulk-and-pray work.

Impact Entry & French Doors
Custom Windows & Doors in Sherman Oaks on older homes like hollow-core exterior and French units fail two ways: the Santa Ana winds stress hinges and weatherstripping until the door binds by July, and the original framing was never square to begin with. We rebuild jambs with pressure-treated lumber, square the opening with composite shims, and install impact-rated door assemblies that pass the VHFHSZ fire-resistive review when the address requires it. Every door is flashed and sealed before the inspector signs off.

Wind Mitigation & Code Compliance
This is the service that saves Sherman Oaks homeowners from the two most common cost blowups: racked openings and VHFHSZ glazing surprises. We pull permits, handle the LA City fire-resistive construction review for hillside parcels, and write the allowances into the contract upfront. When the inspector walks the job, we have the paperwork, the product documentation, and the installation photos to prove the opening is square and the glazing is rated for the hazard zone. If the pane is not true, the job is not done.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Sherman Oaks
We’re an authorized installer for more than a dozen manufacturer lines, and for Sherman Oaks homes we most often quote PGT, CGI, and ES Windows because those product lines handle the heat, the Santa Ana loads, and the fire-code glazing requirements specific to this zip code. CWS and Simonton come up on Hillside remodels where the inspector wants specific fire-rated assemblies. We keep common replacement parts and frame components stocked for fast turnaround on 91403 jobs, which means less waiting between diagnostic call and install day.
Common Impact Windows & Doors Problems We See in Sherman Oaks Homes
- Seized sashes every summer. The Valley’s heat-basin effect drives direct sun into uninsulated aluminum frames, and the metal expands until the slider will not move. We see seized sashes on Valley-floor homes every July in Sherman Oaks, and the real fix is a full-frame replacement with a thermally broken, low-E impact-rated unit, not more silicone.
- Racked openings from the 1994 Northridge quake. Many Sherman Oaks homes never got flagged for structural damage, but the rough openings are subtly out of square. A factory-sized double-hung will not sit right in a racked opening. We find shims nearly 3/4 inch out of plumb on 1950s ranches regularly. We rebuild the jamb, we do not caulk the gap.
- Failed seals around old single-pane glass. The relentless summer heat cooks the vinyl seals on 50- and 60-year-old windows until the glass fogs permanently. That is not a cosmetic issue. It is a signal the opening has moved and the glazing is no longer doing its job. We replace the whole assembly, frequently with impact-rated low-E glass that satisfies Title 24.
- Hillside homes with skipped fire-code glazing. Homeowners south of Ventura Blvd sometimes skip impact-rated glazing to avoid the fire review, then a remodel triggers the inspection and the single-pane glass fails the VHFHSZ check. We fix that with multi-pane tempered or fire-rated assemblies, and we handle the permit paperwork so the replacement is compliant the first time.
Pricing for Impact Windows & Doors in Sherman Oaks, CA
On the Valley floor north of Ventura Blvd, a typical impact window replacement in Sherman Oaks runs $900-$1,600 per opening for a standard double-hung or picture unit. Hillside parcels south of Ventura Blvd that fall inside the Very High Fire Hazard Severity Zone typically run $1,500-$2,800 per opening because the glazing must meet fire-resistive construction standards, and the opening itself often needs jamb reconstruction. Impact sliding glass doors run $2,800-$6,500 installed depending on width and whether the rough opening is square or needs rebuilding. Permit fees, structural inspection, and fire-code review add $400-$1,200 on hillside parcels. We write every line item on paper before work starts, and the price you sign is the price you pay. Call (888) 635-0804 for a free, written estimate.
We Also Serve Cities Near Sherman Oaks
Our Impact Windows & Doors crews run daily routes through Van Nuys, Encino, Studio City, and North Hollywood. The same techs who know the VHFHSZ hillside rules in Sherman Oaks handle the flatland ranch work in those neighboring markets, so you get a crew that actually understands Valley heat, Santa Ana wind loads, and Northridge-era framing. Call (888) 635-0804 to schedule a free estimate anywhere in the central Valley.
Serving Sherman Oaks, CA - Our Local Coverage Area
We’re based in the Sherman Oaks 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 Sherman Oaks
No, flat-Valley addresses in Sherman Oaks north of Ventura Blvd generally do not require fire-rated impact glazing, but impact-rated low-E glass is still the smart choice because it cuts the summer heat load that routinely pushes Valley temperatures to 100-108°F. If you are just replacing a failed single-pane unit, standard Title 24-compliant low-E glass may satisfy code. We quote both options and tell you exactly what your address requires. Call (888) 635-0804 for a free estimate.
Because your Sherman Oaks parcel sits inside LA’s Very High Fire Hazard Severity Zone, and California Building Code triggers fire-resistive construction review on exterior door and window replacements in that zone. That means the glazing must be multi-pane tempered or fire-rated, and the frame assembly must resist ember intrusion. We pull the permit, submit the product documentation, and install assemblies that pass the review the first time. Call (888) 635-0804 and we will check your address’s fire-zone status before you buy anything.
The 1994 Northridge quake epicentered just a few miles northwest of Sherman Oaks, and many homes that never showed visible structural damage still shifted at the rough openings. The old aluminum frame hides the rack, sometimes with shims nearly 3/4 inch out of plumb. When we replace a 1960s slider on a Sherman Oaks ranch, we open the wall, check the jamb, and rebuild it square before we set the new impact-rated door. That is why our quotes include a written allowance for jamb reconstruction. Call (888) 635-0804 for a free estimate that accounts for what is inside the wall.
In most Sherman Oaks homes built before 1980, you need a full-frame replacement. The original aluminum frames are not thermally broken, they are not sized for impact-rated laminated glass thicknesses, and the rough opening has usually shifted enough that a retrofit glass pack would leave the seal compromised. Retrofit glazing can work in some newer frames, but we only recommend it after opening the sash and measuring the frame’s true square. Call (888) 635-0804 and we will tell you honestly which route your house can take.
Impact-rated windows use laminated glass with an interlayer that blocks shattering, and when that laminated glass is paired with a low-E coating and a thermally broken frame, it cuts solar heat gain dramatically compared to the single-pane aluminum assemblies in most Sherman Oaks homes. The heat-basin effect of the San Fernando Valley means the right glass package can cut your cooling load while still meeting fire-code and Title 24 requirements. We quote manufacturer lines side by side so you see exactly what each product does for heat, noise, and code compliance. Call (888) 635-0804 for pricing.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Sherman Oaks since 2008.



Before
After
Before
After
Before
After