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 Mission District
Impact windows and impact doors in Mission District homes require a different approach than the one that works in a suburban tract. Most houses here are Victorian and Edwardian flats built between the 1890s and 1910s. Their window openings are not off-the-shelf rectangles. Before we quote impact-rated glass, we measure every opening and inspect the framing behind it. Call (888) 635-0804 and we’ll walk your block, look at your bays, and give you a written line-item quote that reflects what’s actually behind the trim.
Why TruePane Windows & Doors Is Mission District’s Preferred Impact Windows & Doors Company
TruePane was founded by Dale Kessler, a second-generation glazier, on one rule: if the pane is not true, the job is not done. We installed our first Mission District impact window in 2008. Since then our crews have worked on Shotwell, Folsom, Guerrero, and nearly every block between 14th and 24th Street where the housing stock is dense and the bay windows are cantilevered. We know that no two bay window openings on the same block measure identically. We know which south-facing frames have been baked by the Mission’s sun and which north-facing trim is holding moisture from marine air. That knowledge changes how we quote.
Every job comes with The Keystone Standard: both manufacturer warranty layers registered in writing, durations stated, before our truck leaves your driveway. And every install carries the Done Right Promise. If something is not done right, we make it right. No paperwork fights, no arguing. A live person answers our phone 24 hours a day, 7 days a week. Not a voicemail tree.
Our Impact Windows & Doors Services in Mission District
Hurricane Impact Windows
A Mission District Victorian with original single-pane sash windows loses heat in winter and bakes in the Mission’s sun from spring through fall. Twin Peaks shields this neighborhood from the ocean fog that keeps the Sunset and Richmond cool, so your wood frames dry out and gap faster here. Our impact window replacement starts with the framing inspection, not the glass order. We replace cantilevered bay assemblies with custom-measured impact-rated units, fusion-welded frames, and argon-filled low-E glass that actually seats against the jamb rather than floating 3/8″ off it. Impact windows in Mission District typically run $1,200-$2,800 per opening depending on sash count, bay configuration, and whether the existing cantilever needs shoring.

Impact Sliding Glass Doors
Many Mission District flats have rear additions from the 1960s-1980s with aluminum sliding doors that have never sealed well. Replacing them with impact-rated sliding glass doors means new track assemblies, proper perimeter flashing, and glazing that stays square through thermal cycling. We see a lot of rear additions on the odd-numbered street sides where afternoon sun hits hardest. A typical impact sliding glass door replacement in the Mission runs $3,800-$7,500 including tear-out and new flashing.

Impact Entry & French Doors
Victorian and Edwardian flats in the Mission often still have their original entry doors, or a mismatched home-center replacement that no longer closes square. We install impact-rated entry doors and French doors sized to the actual rough opening, not shimmed into a gap with an inch of caulk. For double doors on rear garden apartments and parlor-level entries, we quote the threshold, the flashing, and the framing repairs as line items. Most Mission District impact entry door replacements land between $2,500 and $6,000 installed.

Impact Garage Doors
Garage-facing flats and single-family homes along Mission Street and South Van Ness often have roll-up or swing-out garage doors exposed to direct sun through the afternoon. Impact garage doors for Mission District homes typically run $3,500-$8,000 depending on width, material, and whether the existing track assembly is reusable. We quote the track condition as part of the job, because a new impact-rated panel on worn track hardware will not perform to its wind rating.

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 Mission District
TruePane is an authorized installer for PGT, CGI, and CWS impact-rated window and door lines, among others. We stock common replacement hardware and sealants for Mission District customers so most service calls are one visit. We quote manufacturer lines side by side on paper so you can see the difference in glass thickness, frame material, and wind rating before you commit. No secret upgrades after the fact.
Our Impact Windows & Doors team carries the same discipline on every job: measure twice, register warranties in writing, and never leave a rough opening unflashed.
Common Impact Windows & Doors Problems We See in Mission District Homes
- Cantilevered bay window framing is rotted at the underside. Marine air meets exposed end grain on tight rowhouse sides, and the structural box that holds the bay rots from below. Replace the glass without shoring the framing and the new unit twists within a season.
- Original double-hung sash weights and pulleys are seized or disconnected. Century-old sash hardware no longer holds the window in place, and the oversize gaps around the jamb let enough air and UV through that even new glazing never reaches its rated U-factor. We convert the opening to impact-rated tilt-turn or fixed units and insulate the surrounding jamb as part of the job.
- Flashing tape from previous patch jobs is dry and peeling. On the narrow sides of Mission flats where ladders barely fit, previous crews skipped proper flashing. Wind-driven rain gets behind the trim, rots the new jamb, and kills the insulated glass perimeter seal within a few seasons. We strip the old tape and re-flash the entire rough opening with new flashing tape before we set the unit.
- Lead paint in original glazing putty and frames. The Mission’s 1890s-1910s housing stock predates lead paint bans, and the old putty holding single-pane glass in place almost always tests positive. We follow required abatement procedures and build the line item into the quote from the start, not as a surprise change order.
Pricing for Impact Windows & Doors in Mission District, CA
Impact window replacement in Mission District typically runs $1,200-$2,800 per opening for most Victorian or Edwardian flats, with custom bay configurations and structural repairs adding to the figure. Impact sliding glass doors run $3,800-$7,500. Impact entry and French doors land between $2,500 and $6,000. Impact garage doors run $3,500-$8,000. These ranges reflect the Mission’s actual conditions: non-standard sash dimensions, lead paint abatement, tight rowhouse access, and the structural work that cantilevered bays often need before new glass can go in.
We write allowances into every contract for the unknowns that only reveal themselves once the trim comes off. No change orders without your written approval. Call (888) 635-0804 for a free written estimate with real numbers.
We Also Serve Cities Near Mission District
If you live just outside the Mission, we also serve Parkway, Arden-Arcade, Ladera Heights, and Commerce. The same crews, the same Keystone Standard, the same Done Right Promise. Whether you’re in Mission District or within a few miles, we’ll measure your openings and quote in writing.
Serving Mission District, CA - Our Local Coverage Area
We’re based in the Mission District 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 Mission District
We inspect the bay frame before we quote, and we write a line-item allowance into the contract for shoring the cantilever if the framing is rotted. If the rot is worse than the allowance covers, we stop work and get your written approval before we touch it. On Shotwell Street, our crew opened a 1904 Edwardian flat’s south-facing bay to find the cantilever framing so dried out from Twin Peaks sun that the original single-pane sash had pulled 3/8″ from the jamb. We templated each custom sash, shored the cantilever under the original written allowance, and swapped in impact-rated argon-filled low-E units with new flashing tape around the entire rough opening. Call (888) 635-0804 to schedule an inspection, and we’ll show you exactly what your bay needs before we ask you to sign anything.
Yes. Mission Victorian bay windows are cantilevered assemblies with multiple angled sash units, not simple rectangles. Each opening was cut and framed by hand when the building went up, and no two on the same block measure identically. An off-the-shelf impact window will not seat correctly in a non-standard opening, and an impact glass unit that is shimmed or caulked into place loses its wind rating because the frame is not bearing properly. We template every opening and order impact-rated units to the actual dimensions, which is the only way the glass will perform to its rated wind capacity.
In most cases yes. The original glazing putty and painted wood frames in Mission flats built between the 1890s and 1910s almost always contain lead. Disturbing that material during window removal triggers San Francisco’s lead-safe work requirements. We build abatement into the quote as a line item from the start. You will not see it appear as a surprise the day after we pull the first sash. Call (888) 635-0804 for an exact quote with the abatement line item included.
You need impact-rated windows in the Mission for three reasons that have nothing to do with hurricanes. First, wind-driven rain during winter storms hits the west-facing sides of Mission flats hard, and original single-pane sashes leak. Second, impact-rated laminated glass holds together if a branch, bottle, or projectile hits it, which matters on dense blocks where windows face the street and the sidewalk. Third, impact-rated units are built to far tighter air and water infiltration standards than standard windows, which means your 1905 flat stops bleeding heat in winter and stops baking in the Mission’s summer sun. You also satisfy more of the wind mitigation requirements that insurers ask about in California. Call (888) 635-0804 and we’ll walk your building with you.
We write allowances into the contract for framing repairs and waterproofing before we start. If the framing rot is deeper than expected, or the sheathing is failed behind the trim, we stop and show you what we found. You approve a written change before we proceed. We never hand you a bigger bill at the end and call it a surprise. The alternative is what we see too often: a previous crew set new glass into framing that was already failing, and the new unit twisted and lost its seal within two seasons. That is the kind of work TruePane was founded to stop.
If you are planning impact window or door work on a Mission District flat, call (888) 635-0804 for a free written estimate. We measure every opening, inspect the framing behind the trim, and put the real numbers on paper before any work begins.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving Mission District since 2008.



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