Free on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.
Fast, Reliable Gate Parts & Welding Across Union City
Gate parts and welding in Union City comes down to one thing: salt air. It eats hinges, rusts posts at the base, and seizes slide gate operators years before their time. If your gate sags, grinds, or won’t latch, you need a repair that actually lasts in this specific climate, not a patch job quoted over the phone by someone who has never driven Decoto Road. We’ve been fixing and welding gates across Union City since 2001. Call us at (877) 610-2993 and we’ll come take a look.
Key Takeaways for Union City Homeowners
- Hinge replacement in Union City typically runs $180-$390 depending on gate weight and post condition.
- Post replacement runs $450-$950, including cutting out the old post, welding in a new galvanized one, and re-hanging the gate.
- Most gate failures in Union City start at the hinge post base, where salt-laden soil moisture concentrates.
- Galvanized steel with stainless hardware lasts 2-3 times longer than painted steel within a mile of the Bay marshlands.
- We weld on site. Your gate stays in your driveway, and every job carries our 90-Day Done Right Promise in writing.
Why Gatewood Fence & Gate Is Union City’s Preferred Gate Parts & Welding Company
Hal Gatewood started this shop in 2001, and his name is on the door. That’s not marketing, it’s just how he runs it. When you call, a live person answers the phone. When you schedule, the person who shows up has already worked on gates in your neighborhood. We’ve replaced hinge posts in Decoto, rebuilt rail sections along Alvarado-Niles Road, and freed up seized slide operators off Dyer Street. Our crews know that a gate in Union City fails differently than one in Fremont’s hills, and we spec the repair accordingly.
We carry a Gate Parts & Welding in Union City reputation for showing up when we say we will and standing behind the work. Every job gets our 90-Day Done Right Promise, written on the invoice. If it’s not done right, we make it right. One call brings Hal back. No runaround, no third-party service claim line.
Our Gate Parts & Welding team covers Union City zip code 94587. That means response time is measured in hours, not days. You’re never waiting on someone driving up from San Jose or across the bridge.
Our Gate Parts & Welding Services in Union City
Hinge Replacement
Hinges fail first in Union City. The constant marine air off the Don Edwards San Francisco Bay National Wildlife Refuge puts airborne salt on every exposed piece of hardware, and the hinge point is where that salt gets ground in with every swing. A gate that sags or scrapes the concrete usually has a hinge problem, not a panel problem. We cut out the old hinge, weld in a replacement, and re-hang the gate so it swings true. Typical cost in Union City runs $180-$390 per hinge, depending on gate weight and whether the post needs reinforcement while we’re in there.

Post Replacement
In Union City, gate posts rust through at the base within 15-20 years, even when the gate panel itself looks fine. That’s because soil-level salt air and irrigation moisture combine right where the post enters the concrete. You can’t weld a patch onto a post that’s rotted through the base and expect it to hold a swinging gate. We cut the old post out, weld in a new galvanized steel post, and set it so the gate hangs level and latches cleanly. Post replacement in Union City runs $450-$950, including concrete work and re-hanging the gate on new hardware.

Rail Repair
Side-yard gates in Decoto and Alvarado are mostly 30-50 years old now, and the horizontal rails are where corrosion and fatigue meet. A cracked rail lets the whole gate twist, which puts stress on the hinges and the latch. We repair or replace the rail section, reinforce the joint, and weld everything square again. Rail repair in Union City typically runs $250-$550, depending on whether we’re patching one section or replacing the full rail span.

Custom Welding
Sometimes the right fix isn’t a catalog part. If your gate was built with odd dimensions, or you want a section modified, or you need a post-mounted bracket that no one manufactures, we weld it on site. Hal has been doing custom gate welding since 2001, and he’d rather fabricate a bracket that fits your steel than sell you a universal kit that doesn’t. Custom welding work in Union City is quoted on the spot, before any work starts. You’ll know the price, and it won’t change at the door.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
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 Union City
We service and stock parts for Gatewood’s certified gate operator brands. If your gate runs on a Viking, DoorKing, or Elite operator, we carry or can source the boards, arms, and gears for it. We keep common parts on the truck for service calls around Union City Blvd and Whipple Road, which means we can often complete the repair in one visit instead of ordering and coming back. We’re certified to work on nine major gate brands, and when you call (877) 610-2993, we’ll tell you straight whether we have the part on hand or need a day to get it.
Common Gate Parts & Welding Problems We See in Union City Homes
- Hinge posts rusted through at the base: Salt-laden soil moisture and bay humidity eat the steel where the post enters the concrete. The gate sags, scrapes, and eventually won’t latch, even though the panel looks fine from the curb.
- Slide gate operators seizing on Whipple Road and Dyer Street: The combination of corrosive marine air and 50-100 daily cycles in warehouse and light-industrial settings strips drive gears in 5-7 years. That’s half the lifespan you’d expect in Fremont or Livermore.
- Galvanic corrosion at mixed-metal hinges: Zinc-plated hinges bolted to raw steel posts accelerate rust near the Bay. The hinge freezes, the gate grinds, and the latch eventually fails. We see this constantly in 1970s and 1980s tract homes in Decoto and Alvarado.
- Weld failures on old tubular steel gates: Factory welds on 30-50 year old side-yard gates fatigue and crack under repeated swing cycles. The gate twists, binds, and gets forced instead of fixed. We re-weld the joint and add a reinforcement plate where it matters.
Pricing for Gate Parts & Welding in Union City, CA
Here’s what gate repairs actually cost in Union City right now. Hinge replacement runs $180-$390. Post replacement runs $450-$950. Rail repair runs $250-$550. Custom welding is quoted on site, but small brackets and reinforcement plates typically run $120-$300. A slide gate operator gear replacement on a commercial unit near Dyer Street generally lands between $400-$900, including gear, labor, and alignment. What moves the price is gate weight, post depth, and how much corrosion work is involved. Every job is quoted and agreed before any work starts. We offer $40 off any repair over $200, no trip charge inside the county, and a permanent 10% discount for seniors and veterans. Call (877) 610-2993 and we’ll give you the number before we touch a wrench.
We Also Serve Cities Near Union City
We work daily across the East Bay flatlands. From Newark and Fremont to Fairview and Hayward, our crews handle the same salt-air corrosion problems and the same aging 1970s and 1980s gate stock. If you’re in Union City, call (877) 610-2993 and we’ll get you scheduled. Dispatch and scheduling are coordinated from our San Francisco Bay Area office, and crews serve Union City locally.
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 - Gate Parts & Welding in Union City
Union City sits directly adjacent to the Don Edwards San Francisco Bay National Wildlife Refuge, which means airborne salt content and humidity are measurably higher here than just a few miles east toward the 680 corridor. That salt settles on your gate hardware and mixes with condensation every morning. Galvanic corrosion accelerates on untreated steel hinges, posts, and operator gearboxes. A hinge that might last 20 years in Fremont’s drier hillside neighborhoods can seize and fail in 12-15 years west of Decoto Road. If your gate is sagging or grinding, call (877) 610-2993 and we’ll tell you what’s actually failing.
Galvanized steel is coated with zinc that corrodes before the steel does, which buys you years in salt air. Painted steel looks fine at first, but any scratch becomes a corrosion point that spreads under the paint. In Union City, we standardize on galvanized posts and hinges for anything within a mile of the Bay wetlands. It’s the difference between replacing a hinge post twice or doing it once properly. We’ll spec the right material for your gate and give you the price before we start.
No, that’s accelerated corrosion and cycle fatigue. Electric slide gate operators on Whipple Road and Dyer Street face a combination of marine air and high daily cycle counts, so drive gears seize or strip in 5-7 years instead of the 10-12 years you’d see inland. The grinding is usually the rack and pinion stripping or a gearbox bearing failing from moisture intrusion. We recently replaced a seized LiftMaster slide operator off Dyer Street where the original rack had stripped its drive gear in under seven years. If yours is grinding, call (877) 610-2993 before it locks up completely.
You shouldn’t. A gate post that’s rusted through at the base has lost structural integrity below the weld point. Patching the visible section leaves the corroded steel in the concrete, and the post will fail again, usually within a year. We cut the old post out, weld in a new galvanized steel post with stainless fixings, and re-hang the gate on fresh roller bearings. We’ve done this in Decoto on 1980s tubular steel gates that had been patched twice already, and the fix holds because the problem was never the patch. The gate sags in the hinge post, not in the middle, and that’s where we start.
Yes, and it’s not optional. In Union City’s salt-air environment, external sensors, photo eyes, and edge switches corrode and fail sooner, which a technician has to account for during every service call. The entrapment protection has to work consistently or the operator isn’t safe. When we service Gatewood-certified operators from Viking, DoorKing, or Elite in Union City, we inspect the external safety devices as part of the job, not as an add-on. A gate that closes on a car or a person is a serious problem. If your operator hasn’t been checked recently, call (877) 610-2993 and we’ll do it while we’re out.
Call Gatewood Fence & Gate for Gate Parts & Welding in Union City
If your gate is sagging, grinding, rusting, or refusing to latch, call us at (877) 610-2993. Hal Gatewood answers with a live person, 24 hours a day, 7 days a week. We’ll give you a straight answer, an upfront price, and a time we’ll actually show up. The name is on the shop, and the shop is local. That’s the oldest accountability there is. Free estimates, $40 off any repair over $200, no trip charge inside the county, and a 90-Day Done Right Promise on every job we do in Union City.
Written by Hal Gatewood, Owner at Gatewood Fence & Gate, serving Union City since 2001.





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