Free in-home measure and quote - PGT, CGI and CWS impact lines compared on your actual openings, style by style
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AfterFast, Reliable Window Replacement Across Union City
Window replacement in Union City usually runs between $650 and $1,900 per window installed, depending on the frame material, glass package, and what our crew finds once the old frame comes out. That second part matters more in Union City than almost anywhere else in the East Bay, and we’ll get to why in a minute. We’re Westlight Windows & Doors, and we’ve been replacing windows since 2009, with crews serving Union City neighborhoods from Decoto to Alvarado every week. If you’re tired of drafts, fogged glass, or windows that won’t latch, call Owen and the team at (903) 354-7134 for a written price before any work starts.
Why Westlight Windows & Doors Is Union City’s Preferred Window Replacement Company
Union City homeowners call us for the same reason they stop calling other contractors: we answer the phone, we show up in the window we gave, and we put the price in writing before we touch a single screw. Every job runs on the Kingswell Guarantee, which means a written price before work starts, a committed arrival window, a clean job site, and a written guarantee on the completed work. If a repair fails within the guarantee period, we come back and fix it at no charge. That’s the 365-Day Done Right Promise, and we hand it to every customer in writing at job completion.
Owen Satterfield runs this Kingswell location with a simple rule: treat a $50,000 remodel the same way you’d treat a $500 glass swap. That means background-checked, uniformed technicians on every job, live phone coverage 24 hours a day, and eight manufacturer lines – PGT, CGI, CWS, and five others – so we’re never forcing a product onto your house just because it’s the only one we stock. Our Window Replacement team has re-squared more out-of-plumb openings in Union City’s flatlands than most contractors see in a career, and we’ll explain why that matters below.
Window Replacement Company in Union City
A Window Replacement Company in Union City does more than swap glass – it removes the old frame, inspects the rough opening, corrects any structural issues, and installs a new unit that actually fits. In Union City’s western flatlands, that inspection step is where experienced crews separate themselves from everyone else. Full-frame replacement on a typical 1960s ranch in Decoto or Alvarado runs $1,200 to $1,900 per window; insert replacement, where the new unit fits inside the existing frame, typically runs $650 to $1,100 per window when the opening is square and sound.
Full Frame Replacement
We remove everything down to the studs, inspect the rough opening for settlement damage and water intrusion, then rebuild and flash the opening before setting the new frame. In Union City, this is the standard correction for frames racked out of square by Bay mud settlement. The price includes the inspection, re-squaring, insulation, trim, and haul-away of the old materials.
Insert Window Replacement
When the existing frame is still square and the surrounding wall is dry, an insert replacement fits a new window inside the old frame. It’s faster and costs less than a full-frame job. We only recommend this route after checking the opening with a level and confirming the frame hasn’t moved.
Window Glass Replacement in Union City
Window Glass Replacement in Union City swaps the insulated glass unit without replacing the entire frame – a practical fix when the sash, hardware, and frame are still sound but the seal has failed or the glass is cracked. A standard dual-pane glass replacement in Union City runs $180 to $450 per window, depending on size, glass type, and whether the unit is stock or custom-ordered. The bay’s salt-laden air accelerates seal failure on older aluminum frames, so fogged glass is one of the most common calls we get from homeowners near the old Alvarado district.
Insulated Glass Unit Swap
We remove the old sealed unit, clean the glazing channel, install new low-E insulated glass, and re-seal the sash. This works when the frame itself is still square and the weatherstripping still holds. If we find frame corrosion or movement, we’ll tell you and price the full replacement honestly.
Low-E Glass Upgrades
Replacing clear glass with low-E insulated glass cuts heat gain through the glass without changing the look of your home. For Union City’s marine layer, we recommend low-E coatings tuned for the foggy, mild winters and the sun that breaks through most afternoons.
Trusted Brands We Service in Union City
We stock and install products from ViewLux, PGT, and CGI, along with five other manufacturer lines – so we match the window to the house, not the house to whatever’s on the truck. For Union City’s bay-fog conditions, we frequently recommend PGT’s vinyl impact-rated lines and ViewLux’s energy-efficient insulated units. Because we carry parts locally and crews are in Union City every week, turnaround on custom glass orders runs faster than when a contractor has to ship everything from out of state. Call us at (903) 354-7134 and we’ll walk you through what each brand actually costs here.
Common Window Replacement Problems We See in Union City Homes
- Racked frames from Bay mud settlement. Homes in the western flatlands, especially in Decoto and Alvarado, sit on fill that moves slowly over decades. Window and door rough openings drift 1-2 inches out of square with no visible structural damage, which is why windows suddenly bind or draft even though they look fine.
- Corroded aluminum frames from salt fog. Persistent marine-layer air off San Francisco Bay corrodes aluminum frames and hardware measurably faster than inland. A like-for-like aluminum swap just restarts the same clock, so we steer Union City customers toward vinyl and fiberglass frames for the long term.
- Permit-triggered code surprises. Opening a 1960s wall often exposes wiring that predates current code, undersized framing, or failed waterproofing at the threshold. We write allowances into the contract for exactly these discoveries, so the quote moves only after you’ve approved a written price.
- Water intrusion at unsealed thresholds. Damp winters and old weatherstripping let water under door sills, warping subfloors and framing. During window replacement, we check adjacent door thresholds and flag what needs attention before it spreads further.
Pricing for Window Replacement in Union City, CA
Here are the ranges we quote most often in Union City: insert window replacement runs $650-$1,100 per window; full-frame replacement runs $1,200-$1,900 per window; and a glass-only swap runs $180-$450. What moves the number is the condition of the rough opening, the glass package you choose, and whether we’re correcting settlement damage or just replacing a tired unit. You’ll get your written price before any work starts – no revised invoices at the door, no change orders you didn’t approve in writing. Call (903) 354-7134 for a free estimate and we’ll give you exact numbers for your house.
We Also Serve Cities Near Union City
Besides Union City, our crews cover Fremont, Newark, San Lorenzo, and Castro Valley weekly. If you’re in a neighboring city and need window replacement with the same written-price guarantee, call us and we’ll put you on the schedule.
Serving Union City, CA - Our Local Coverage Area
We’re based in the Union City 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 Union City
The frame has likely shifted out of square from Bay mud settlement underneath the house. On the western flatlands, rough openings drift 1-2 inches over decades with no visible structural damage, which binds the sash and opens gaps at the weatherstripping. The fix is re-squaring and shimming the rough opening before setting the new window – not blaming the window itself. Call (903) 354-7134 and we’ll check your frames with a level before quoting anything.
Sometimes yes, and that’s exactly why we inspect first and write allowances into the contract. Once walls are open, we often find outdated wiring, undersized or damaged framing, and failed waterproofing that a permit will require us to correct. We price those discoveries in writing before touching them, so the quote never moves without your approval.
Vinyl, almost always. Salt-laden bay air corrodes aluminum frames and hardware faster here than inland, so a like-for-like aluminum replacement just restarts the deterioration clock. Vinyl and fiberglass frames hold up far better against Union City’s marine layer, and they cost about the same as mid-grade aluminum once installation is factored in.
Yes, but the bigger payoff here is the seal. Low-E glass (a thin coating that reflects heat back out in summer and back in during winter) cuts solar heat gain through the glass, which means less strain on your AC during the sunny afternoons that follow the morning fog. The real Union City benefit is that modern dual-pane units seal out the salt air that destroys old aluminum seals.
We write an allowance into the contract before we start, and any surprise gets priced and approved in writing before we touch it. On a 1968 Decoto ranch, our crew recently found the rough openings 1-2 inches out of plumb from Bay-mud settlement, plus corroded aluminum jamb and failed weatherstripping from marine-layer salt fog. We re-squared the openings, flagged the outdated wiring and undersized framing, and wrote the repair into the contract as an allowance – the homeowner saw exactly where the quote moved and why.
Written by Owen Satterfield, Owner at Westlight Windows & Doors, serving Union City since 2009.