Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Sliding glass doors
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Impact window and door installation in San Mateo means working on homes built between 1920 and 1960, most of them still carrying original single-pane wood sashes or rusted steel casements that salt fog off the Bay has been eating at for decades. We do full-frame replacements, not just glass swaps, because most 94401 homes need the frame rebuilt before a new window can sit square. Call (888) 635-0804 and a live person answers, day or night, to schedule a free estimate for Impact Windows & Doors work in San Mateo.
Why TruePane Windows & Doors Is San Mateo’s Preferred Impact Windows & Doors Company
We’ve pulled rotted sashes out of Craftsman bungalows near downtown San Mateo and cut rusted steel casements out of Spanish Colonial Revival homes on the flatlands, all without cracking the original plaster returns. That specific knowledge matters in a ZIP code like 94401, where most homes were built before 1960 and the failure modes are older than the companies that usually bid the job. Our crews work in San Mateo weekly, not occasionally, and we know which blocks off El Camino Real still have the original 1930s steel frames that rust shut by July.
Dale Kessler founded TruePane in 2008, but the glazing craft behind it goes back many years. He still runs the whiteboard rule: if the pane is not true, the job is not done. Every San Mateo job gets background-checked, uniformed technicians who measure twice and register both warranty layers in writing before the truck leaves the driveway. That’s The Keystone Standard, and it applies to every home we touch in San Mateo.
We carry a Done Right Promise on every install. If something’s not right, we make it right. No paperwork fights, no arguing. Homeowners in San Mateo who’ve been burned before tend to notice that difference.
Our Impact Windows & Doors Services in San Mateo
Hurricane Impact Windows
Full-frame impact window replacement is the core need in San Mateo’s 94401 housing stock. Older Craftsman bungalows and Spanish Colonial cottages have double-hung wood sashes so softened by bay fog that inserts won’t hold. We install fusion-welded impact-rated frames with low-E glass and argon fill, flashed with butyl tape and re-set into the original openings. The result clears California Title 24 U-factor and SHGC thresholds for coastal climate zones.
Impact Sliding Glass Doors
Sliding doors on San Mateo’s older ranch homes often bind in July because the original aluminum frames have oxidized and shifted out of square. We replace them with impact-rated sliders that ride true and lock up tight, sized to the existing opening or widened where the homeowner wants more light without losing the coastal climate rating.
Impact Entry & French Doors
Original door frames in 94401 homes have rarely been upgraded. That’s why we measure every rough opening twice, quote manufacturer lines side by side on paper, and install impact-rated entry and French doors that sit plumb in openings that haven’t been square since 1940.
Impact Garage Doors
Torsion springs on impact-rated garage doors carry high tension. If you’re replacing a garage door in San Mateo and want impact rating, we handle the full install and spring work. We don’t recommend homeowners touch those springs themselves; a trained technician does it in one visit, with both warranty layers registered before we leave.
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 San Mateo
We’re an authorized installer for manufacturer lines including CGI, CWS, and ECO Window Systems, and we quote them side by side on paper so you see exactly what you’re buying. For San Mateo homeowners in prewar and early postwar homes, we often recommend fusion-welded frames from CGI or CWS because they hold square in older masonry and plaster openings. Parts for these brands are stocked locally, which means a service call in San Mateo doesn’t wait on a warehouse across the country.
Common Impact Windows & Doors Problems We See in San Mateo Homes
- Rusted-shut 1930s-40s steel casements. Salt fog off the Bay keeps these damp every summer morning until the hinges seize. Cutting them out without cracking the surrounding plaster takes an angle grinder and patience, which is why most general contractors pass on the job. We don’t.
- Wood sashes turned to punk behind the jamb. In Craftsman bungalows near downtown San Mateo, years of marine-layer moisture leave the wood so decayed that jamb screws have nothing to bite into. Inserts are impossible; full-frame replacement is the only fix.
- Rotted bottom plates hiding behind old window openings. Once the old frame comes out, a 1920s San Mateo home often reveals knob-and-tube wiring or rotted bottom plates that need addressing before flashing tape goes down. We price and approve any surprise in writing before touching it.
- Frame oxidation on bay-facing sliders. Aluminum frames corrode faster in San Mateo’s salt-fog corridor than they do inland in Redwood City or San Jose, binding the door by mid-summer. Replacement with impact-rated frames ends the cycle.
Pricing for Impact Windows & Doors in San Mateo, CA
A full-frame impact window replacement in San Mateo typically runs $1,800-$3,400 per opening, depending on the size and how much rotted framing we find behind the old sash. Impact sliders run $4,500-$8,000 installed. Impact entry doors run $3,500-$7,500, and impact garage doors run $5,000-$12,000 complete. The wildcard in 94401 is what’s behind the old window: rotted jambs, rusted steel, and permits that trigger smoke detector retrofits and tempered glass in wet areas. We build those allowances into the contract up front, so the number you see is the number you pay. Call (888) 635-0804 for a free estimate and a written line-item quote. We also offer a permanent 5% discount for seniors and veterans, a free written repair estimate, and a maintenance check.
We Also Serve Cities Near San Mateo
Our crews work locally across the Peninsula. Beyond Impact Windows & Doors in San Mateo, we serve Burlingame, Belmont, Millbrae, and San Carlos with the same full-frame expertise and Done Right Promise. If your home sits in one of those neighboring cities with the same prewar housing stock, we know what’s behind the stucco and the sash.
Key Takeaways for San Mateo Homeowners
- San Mateo’s 94401 core is dense with 1920s-1950s homes still running original single-pane wood or rusted steel windows.
- Salt fog from both the Pacific and the Bay accelerates rot and corrosion faster than inland Peninsula cities.
- Full-frame replacement is the dominant need, not inserts, because the frames themselves are usually gone.
- Permits on older San Mateo homes often trigger smoke detector retrofits and tempered glass upgrades. We handle the entire permit process.
- We quote manufacturer lines side by side on paper and register both warranty layers in writing before we leave.
Serving San Mateo, CA - Our Local Coverage Area
We’re based in the San Mateo 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 San Mateo
San Mateo’s flatlands sit in a microclimate that pulls salt-laden fog off both the coast and the Bay, and that moisture lingers on window frames well into the morning during June Gloom. The result is sustained dampness on steel casements that you won’t get in drier inland Peninsula cities. The rust seizes the hinges, and the frame bows out of square in its masonry opening. Call (888) 635-0804 and we’ll assess whether the frame can be saved or needs full replacement.
Yes, in most cases. When we pull a permit for a full-frame replacement in San Mateo, the city’s building department reviews the project against current Title 24 U-factor and SHGC thresholds for coastal climate zones, and they typically require the window upgrade itself to meet those standards. That’s already built into our impact-rated frames, so the permit clears without surprises. Call (888) 635-0804 for a written quote that includes the permit and compliance work.
We inspect first, before the contract is signed, and we write allowances into the quote for the framing repairs these homes usually need. On a 1920s Craftsman bungalow off El Camino Real, we found the original double-hung sashes so decayed that the jamb screws had nothing to bite into. We cut out the rotted frame, installed a new impact-rated casement, and flashed the rough opening with butyl tape. The homeowner kept the 1928 interior trim; the inspector signed off without comment. If we find more rot once the wall is open, the price is approved in writing before we proceed.
An insert only works when the existing frame is structurally sound. On a 1930s Spanish Colonial in San Mateo, the original wood frame is often too decayed from bay fog to hold an insert, so full-frame is the honest fix. Full-frame replacement lets us correct the rough opening, re-flash it properly, and set a new impact-rated frame that clears Title 24. It costs more up front, but it ends the cycle of rot and draft. Call (888) 635-0804 for a side-by-side quote on both options.
Permits on older San Mateo homes typically trigger smoke and carbon monoxide detector retrofits, and sometimes tempered glass in wet areas, but a window replacement alone does not require an electrical panel upgrade. If the inspector finds existing code violations unrelated to our work, we’ll flag them and price the fix separately, approved in writing before we touch it. Call (888) 635-0804 to talk through what your specific home will need.
Contact TruePane Windows & Doors in San Mateo
If you live in San Mateo and you’re tired of drafts, rusted-shut casements, or a sliding door that binds every July, call (888) 635-0804. A live person answers 24 hours a day, 7 days a week, not a voicemail tree. We’ll schedule a free estimate, walk the openings with you, and put the quote on paper so you see exactly what a full-frame impact window or door replacement will cost. Dale Kessler still runs the company by the same rule he started with: if the pane is not true, the job is not done.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving San Mateo and the broader Peninsula area.