Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
Fast, Reliable Window Replacement Across San Lorenzo
Window replacement in San Lorenzo typically runs $850 – $1,400 per window for a standard vinyl retrofit, and $1,200 – $2,100 per opening for a full-frame tear-out on older ranch homes. Most jobs wrap up in one to three days once materials land. If you’re dealing with fogged glass, rotted sashes, or tired aluminum frames near Hesperian Boulevard or the San Lorenzo Community Center, call us at (682) 281-2168 and we’ll get you a written price before anything starts. Juniper Windows & Doors has been installing windows across the Bay Area since 2001, and we know exactly what San Lorenzo homes need when the marine layer rolls in.
Our Window Replacement team works throughout San Lorenzo, from the mid-century tracts off Paseo Grande to the newer infill near Via Granada. We field-measure every rough opening ourselves. No guessing, no stock-size gambling, no reorder delays that leave a hole in your wall for three weeks.
Why Juniper Windows & Doors Is San Lorenzo’s Preferred Window Replacement Company
San Lorenzo homeowners keep calling us back for one reason: the number we write down is the number you pay. Every San Lorenzo window job gets a written price before a single screw turns. No vague estimate that morphs into a surprise invoice at the door. That’s the 365-Day Done Right Promise, and it’s in writing on every project we do in San Lorenzo.
Sean Mackey leads our team, and he’s built the whole operation around visibility. When you book with us, you get a live arrival time you can track, before-and-after photos of the actual work, and a digital invoice you can pay from your phone. Our technicians are background-checked and uniformed, so you know exactly who’s at your door on a Tuesday morning in San Lorenzo.
If a repair fails within a year, the second visit is free. No charge, no argument. That’s a San Lorenzo-specific promise we put in writing. And when you call (682) 281-2168, a live person picks up. Every time. 24/7. No voicemail maze, no callback queue, no phone tag.
Window Glass Repair in San Lorenzo
Window glass repair in San Lorenzo usually costs $190 – $380 per pane, and it’s the right call when a single pane is cracked, fogged, or scratched but the frame and sash are still square and solid. San Lorenzo’s marine-layer fog accelerates seal failure in insulated glass units, especially on west-facing windows that catch afternoon sun after a damp morning. We replace just the glass, not the whole window, which saves San Lorenzo homeowners $400 – $800 per opening compared to a full replacement.
Fogged and Failed-Seal Glass
When the seal between two panes fails, moisture gets in and you see that permanent haze. We see it constantly in San Lorenzo ranch houses built in the 1950s and 60s. Sean Mackey’s crew removes the failed insulated glass unit, verifies the sash is still dimensionally stable, and drops in a new Low-E unit matched to the exposure. West-facing glass in San Lorenzo gets a lower Solar Heat Gain Coefficient to cut summer glare.
Cracked and Impact-Damaged Panes
Kids play baseball in San Lorenzo backyards. Branches come down in winter storms off the Bay. A cracked pane isn’t a full replacement; schedule just the glass. The repair takes under an hour per window once the replacement glass is in hand, and we stock common sizes for San Lorenzo’s tract-home stock so turnaround is fast.
Window Pane Replacement in San Lorenzo
Window pane replacement in San Lorenzo runs $220 – $420 per pane when the frame is intact but the glass itself is compromised. The difference from glass repair is scope: pane replacement typically means the entire glass unit including any low-E coating, gas fill, and interlayer is being swapped. San Lorenzo homeowners need this when one pane fails but the window still opens, closes, and seals against the jamb correctly.
Single-Hung and Double-Hung Panes
Older San Lorenzo tract homes lean hard on double-hung windows with removable sashes. When the lower pane fogs or cracks, we pull the sash, clean the glazing channel, and set a new pane with fresh glazing compound. You keep the original wood or aluminum frame. It’s the cheapest path to a clear view without disturbing surrounding trim or interior drywall.
Fixed and Picture Window Panes
San Lorenzo homes with large fixed picture windows facing the western hills need pane replacement that accounts for heat gain. We match the replacement pane’s SHGC to what the original should have been, or upgrade it slightly if the old glass was uncoated. This keeps the room livable on hot afternoons without replacing the entire fixed frame.
Trusted Brands We Service in San Lorenzo
Juniper Windows & Doors stocks and installs eight product lines, and for San Lorenzo homes we regularly work with CGI, CWS, and ES Windows. CGI’s impact-rated glass carries Florida Product Approval but translates well to Bay Area coastal conditions, CWS offers the low-E coatings that handle our marine layer, and ES Windows gives San Lorenzo homeowners narrow sightlines with strong thermal performance. We stock local parts for all three, so a San Lorenzo replacement doesn’t sit for weeks waiting on a warehouse somewhere in the Central Valley. If you have a different brand in your home now, call us, we’ll match the glass spec and tell you honestly whether repair or replacement makes more sense.
Common Window Replacement Problems We See in San Lorenzo Homes
- Marine-layer seal failure on west and south elevations. San Lorenzo sits just inland from the Bay, so morning fog soaks windows and afternoon sun bakes them. That cycle kills insulated glass seals years early, especially on single-pane-to-IGU retrofits done without proper low-E matching.
- Rotted jamb and sash frames on 1960s ranch houses. Homes near the San Lorenzo Community Center and along Hesperian Boulevard were built fast, with trim that wicked moisture. By now, a lot of that wood is soft. Reusing a rotted jamb to hold a new insulated glass unit is a guaranteed re-work call, and we won’t do it.
- Out-of-square rough openings in mid-century tracts. San Lorenzo’s original homes have settled. A stock double-hung drops into an opening that’s off by a quarter inch and ends up twisting. Then the seal fails inside a season, and the homeowner thinks the window was defective. We field-measure every opening, every time.
- Wrong glass for the wrong exposure. Contractors who don’t understand San Lorenzo’s microclimate will install generic low-E on everything. The north side of a San Lorenzo house needs different glazing than the west side. One size fits all is how you end up with a dark living room and a stifling bedroom.
Pricing for Window Replacement in San Lorenzo, CA
A standard vinyl insert window replacement in San Lorenzo costs $850 – $1,400 per opening. Full-frame replacement on older homes runs $1,200 – $2,100 per window because we’re pulling the old frame, correcting any jamb rot, resquaring the rough opening, and installing new interior trim. Energy-efficient upgrades with low-E coated glass and argon fill add $150 – $300 per window. Labor in San Lorenzo’s market is steady, not inflated like some Peninsula zip codes, so you’re getting honest Bay Area pricing without the San Francisco premium. The final number depends on glass package, frame material, and how much jamb repair your specific openings need. Call (682) 281-2168 and Sean Mackey’s team will give you a written, line-item price before anything starts.
We Also Serve Cities Near San Lorenzo
Juniper Windows & Doors covers all of San Lorenzo plus the surrounding East Bay. We serve San Lorenzo and nearby homeowners in Castro Valley, San Leandro, Union City, and Oakland. Same written-price guarantee, same 365-Day Done Right Promise, same live-answer phone. If you’re a few miles from San Lorenzo, the math doesn’t change.
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 About Window Replacement in San Lorenzo
Alameda County building code requires a final inspection on window replacements that change the rough opening or involve structural framing. Retrofit inserts into existing frames usually don’t need a permit inspection. Full-frame replacements in San Lorenzo do. Juniper pulls the permit, schedules the inspection, and the inspector verifies the window is correctly flashed, anchored, and sealed. Call (682) 281-2168 and we’ll walk you through what your specific San Lorenzo home triggers.
No. San Lorenzo sits in Alameda County, California, not a Florida High Velocity Hurricane Zone. You don’t need Miami-Dade NOA or Florida Product Approval for windows in San Lorenzo. What you do need is glass suited to our marine layer and summer sun: a solid low-E coating, the right SHGC for the exposure, and frames that seal tight against damp air. Call (682) 281-2168 for a free estimate and we’ll spec the glass correctly for your San Lorenzo elevation.
The fog that rolls through San Lorenzo in the morning pushes moisture against window seals, and the afternoon sun bakes them. That combination kills cheap insulated glass early. West-facing windows in San Lorenzo should carry a low-E coating with a lower Solar Heat Gain Coefficient; north-facing windows want higher visible light transmittance to keep rooms bright. Salt air from the Bay also corrodes uncoated aluminum frames faster. Call (682) 281-2168 and we’ll match glass to your San Lorenzo home’s exact orientation.
Hidden jamb rot, out-of-square rough openings, and damaged flashing are the three things that shift a San Lorenzo window replacement price after the old window comes out. If the original frame is rotted behind the trim, we have to replace the jamb before the new unit goes in. If the rough opening was never square, we resquare it. You’ll see any adjustment as a line item on your written change order before we proceed, never a surprise at the end. Call (682) 281-2168 for a free estimate.
We install and service CGI, CWS, and ES Windows in San Lorenzo, plus five other product lines including PGT, ECO Window Systems, Mr-Glass, Therma-Tru, and ViewLux. It matters because one manufacturer doesn’t make the best window for every San Lorenzo exposure. Sometimes a CWS low-E unit is the right call for a fogged west-facing sash; sometimes an ES Windows narrow-sightline frame fits a mid-century home’s original look better. Call (682) 281-2168 and we’ll spec what actually fits your San Lorenzo house, not what we happen to have in the truck.
Written by Sean Mackey, Owner at Juniper Windows & Doors, serving San Lorenzo, CA and the East Bay since 2001.










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