Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Sliding glass doors
Impact garage doorsPGTCGI
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AfterFast, Reliable Impact Windows & Doors Across San Lorenzo
Impact windows and doors in San Lorenzo are not an off-the-shelf swap. The housing stock here, built almost entirely between 1945 and 1960, still carries original single-pane aluminum windows that are now 65 to 75-plus years old, corroded by salt-laden air off San Francisco Bay and dampened by San Lorenzo Creek. Most jobs are full-frame replacements, not pocket inserts, because the original frames are too far gone to hold a new impact-rated unit. We know those tract floor plans block by block, and we know how the clay soil under Alameda County has racked the rough openings out of square since the 1950s. Call (888) 635-0804 for a free estimate, and we will measure twice before we order a single unit.
Key Takeaways
- San Lorenzo’s 1945-1960 tract homes almost always need full-frame impact window replacement, not pocket inserts.
- Marine air and creek moisture corrode original aluminum frames, jambs, and thresholds faster than inland East Bay cities.
- Clay-soil foundation movement means even stock-size impact windows need custom shimming and re-squaring.
- TruePane registers both manufacturer warranty layers in writing before the truck leaves your driveway, under The Keystone Standard.
- Call (888) 635-0804 for a fixed-price, written estimate on Impact Windows & Doors in San Lorenzo.
Why TruePane Windows & Doors Is San Lorenzo’s Preferred Impact Windows & Doors Company
Dale Kessler founded TruePane in 2008 with a rule that still governs every install: if the pane is not true, the job is not done. We have spent years in the glass and glazing trades, and in San Lorenzo that matters more than in most places. The tract homes here repeat the same few developer templates, which means the same window rough-opening dimensions repeat block after block. But almost none of those openings are square anymore. The expansive clay under the flatlands has shifted post-and-pier and slab foundations for seven decades. An installer who treats a stock-size impact window as a drop-in is going to leave gaps that leak air and pull moisture from San Lorenzo Creek into the wall cavity.
We do not do that. Our crews re-square every jamb with custom shims before setting a fusion-welded frame, then flash the sills with tape to keep the damp out of the new low-E glass. San Lorenzo homeowners who call us get a live person on the phone, 24 hours a day, 7 days a week. Not a voicemail tree, not a callback form. The technicians who arrive are background-checked, uniformed, and trained to work in your home the way they would work in their own mother’s. We are an authorized installer for more than a dozen manufacturer lines, including, PGT, and CGI, and we quote those lines side by side on paper so you see exactly what you are buying. Every job carries the Done Right Promise: if it is not done right, we make it right, no paperwork, no arguing.
Our Impact Windows & Doors Services in San Lorenzo
Hurricane Impact Windows
San Lorenzo homes need impact windows that can stand up to two things at once: the marine layer’s constant humidity and the rare but real Pacific storm that pushes debris into East Bay windows. The original single-pane aluminum units from the tract builds are so corroded that the sash jams in the frame, and the jamb itself often crumbles when you remove it for a full-frame replacement. We replace them with impact-rated glass in fusion-welded frames, chosen for the specific U-factor and SHGC that makes sense under San Lorenzo’s overcast marine sky.
Impact Sliding Glass Doors
Most San Lorenzo ranch and minimal-traditional homes have a slider opening onto a backyard or patio, and those sliders are usually original. The tracks have been sanded by 70 years of bay air, the rollers are shot, and the frame has settled out of level. We install impact sliding glass doors that lock square, roll clean, and keep the damp out. Given the clay-soil movement under these homes, we re-level the rough opening before we set the new door, which is the difference between a door that binds in July and one that opens with two fingers.
Impact Entry & French Doors
Wood thresholds and sill plates at San Lorenzo exterior entries rot faster than inland East Bay because creek-side humidity and bay moisture keep them damp year-round. An impact entry or French door installed without proper flashing tape will start to swell and bind within a season. We pull the old threshold, correct the sub-sill, flash with tape, and set a new impact-rated door that sheds water instead of drinking it. For homes where the original door opening has shifted out of square, we re-shim the complete rough opening before the new unit goes in.
Impact Garage Doors
Garage doors are the largest opening in a San Lorenzo home, and the original wood or aluminum doors from the 1950s offer no impact resistance at all. We install impact-rated garage doors and reinforcing systems sized to the existing opening, accounting for the slab shift that has pulled many garage door jambs out of plumb. The result is a door that stays on its tracks in a wind event and does not bow inward under debris impact.
What happens when you call
- 1
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 Lorenzo
We are an authorized installer for more than a dozen manufacturer lines, and for San Lorenzo homeowners we frequently quote CGI, CWS, and ECO Window Systems for impact-rated work. We stock local parts for these brands so that hardware replacement and seal service do not sit on a backorder. When we quote, we put the manufacturer lines side by side on paper, with the warranty durations stated. Both warranty layers get registered in writing before the truck leaves the driveway. That is The Keystone Standard.
Common Impact Windows & Doors Problems We See in San Lorenzo Homes
- Corroded original aluminum frames. The salt-laden marine air off San Francisco Bay has eaten away at 70-year-old aluminum frames so thoroughly that the sash seizes in the frame. When we remove these for full-frame replacement, the jamb often crumbles in our hands.
- Racked rough openings from clay-soil shifting. Post-and-pier and slab foundations in this flatland community have moved since the 1950s. Even a stock-size impact window arrives to find the rough opening out of square. Without custom shimming and re-squaring, the new unit leaks air and pulls in creek moisture.
- Seal failure in original insulated glass. We recently pulled a 1953 minimal-traditional on Via Anza in 94580 where every original unit had fog between the panes. The argon was long gone and the glass was doing nothing for thermal performance. Full-frame impact replacement was the only fix.
- Rotted door thresholds and sill plates. The year-round damp from San Lorenzo Creek and bay humidity keeps exterior door thresholds wet. Impact entry and French doors installed without proper flashing start to swell and bind within one season.
Pricing for Impact Windows & Doors in San Lorenzo, CA
Impact window pricing in San Lorenzo runs higher than a basic pocket insert because almost every home here needs full-frame replacement with custom shimming. A typical impact-rated single-hung or casement window, full-frame, runs between $900 and $1,600 per opening, installed. Impact sliding glass doors in San Lorenzo generally run $3,200 to $6,500 depending on width, glazing package, and how much re-squaring the rough opening needs. Impact entry and French doors span $2,800 to $7,500, with custom millwork and architectural glass pushing the upper end. Lead times on high-end units with custom millwork or specialty glass often run 8 to 14 weeks; labor is rarely the constraint, the manufacturer’s production line is. We fix the price in writing before we order a single unit, and we do not come back with change orders. Call (888) 635-0804 for an exact quote on your home. Estimates are free.
What affects the price:
- Full-frame versus pocket insert (San Lorenzo almost always needs full-frame)
- How far out of square the rough opening has moved
- Glazing package: low-E, argon fill, and SHGC tuned for marine overcast
- Custom millwork, architectural glass, or specialty finishes
- Door threshold and sill plate rot that must be corrected before the new unit goes in
We Also Serve Cities Near San Lorenzo
TruePane crews serve San Lorenzo and the surrounding East Bay flatlands, including Impact Windows & Doors in San Lorenzo, Castro Valley, San Leandro, Union City, and Oakland. If your home is in one of those communities, our Impact Windows & Doors team can measure, quote, and install on the same schedule we run in San Lorenzo.
Serving San Lorenzo, CA - Our Local Coverage Area
We’re based in the San Lorenzo 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 Lorenzo
Because the original aluminum frames from the 1945-1960 tract builds are too corroded and too racked to hold a new impact-rated unit. Salt-laden marine air has eaten the aluminum, and clay-soil shifting has pulled the jambs out of square. A pocket insert into a degraded, out-of-square frame leaks air and lets creek moisture into the wall cavity. Full-frame replacement lets us re-square the opening and flash the sills properly. Call (888) 635-0804 for a free estimate on your specific openings.
San Lorenzo sits close enough to the bay that marine overcast is a constant, which means solar heat gain is a secondary concern and condensation resistance matters more. We typically specify a lower U-factor with a moderate SHGC for this microclimate, which keeps the house comfortable under gray skies and cuts the condensation that forms on single-pane glass near the creek. The exact glazing package depends on your home’s orientation and overhang, and we will put the options side by side on paper. Call (888) 635-0804 to schedule a measure.
Fog between panes means the insulated glass unit has lost its seal, and the argon or krypton fill is gone. On a 1950s San Lorenzo tract home, that seal failure is almost always accompanied by frame corrosion and racked rough openings, so a full-frame impact replacement is the sound fix, not a glass-only swap. We can inspect your windows and tell you whether replacement is urgent or can be phased. Estimates are free.
Plan on 8 to 14 weeks from order to install for impact windows with custom millwork, architectural glass, or specialty finishes. The manufacturer’s production line sets the calendar, not our labor schedule. We order only after the price is fixed in writing and the rough opening dimensions have been double-measured, because a wrong SHGC or a missed seal failure means months of waiting for a replacement unit. Call (888) 635-0804 and we will give you a realistic lead time before you sign anything.
Yes. We pull the old frame, re-square the jamb with custom shims, and set the new fusion-welded impact frame into the corrected opening. We do this on nearly every San Lorenzo job because the clay soil under the flatlands has moved foundations since the 1950s. Rebuilding the wall is almost never necessary. What is necessary is a crew that knows how to shim for square and flash the sill so the creek-fed moisture does not wick into the new unit. Call (888) 635-0804 for an estimate on your home.
Contact TruePane Windows & Doors
If you live in San Lorenzo and your original aluminum windows are fogged, corroded, or racked out of square, we will measure every opening twice, quote the manufacturer lines side by side on paper, and register both warranty layers before the truck leaves the driveway. That is a square deal, in writing. Call (888) 635-0804 to schedule your free estimate for impact windows and doors in San Lorenzo.
Written by Dale Kessler, Owner at TruePane Windows & Doors, serving San Lorenzo and the East Bay with a glazier’s standard since 2008.