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.
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AfterFast, Reliable Gate Parts & Welding Across SeaTac
Gate parts and welding in SeaTac means dealing with two very different machines: the postwar swing gate on a 1960s rambler off South 188th, and the slide gate cycling 400 times a day at a rental car return lane off International Boulevard. We work on both, usually in the same day. Hal Gatewood has been handling Gate Installation - SeaTac since 2001, and the shop carries parts for older residential operators alongside the high-cycle commercial brands that dominate SeaTac’s airport-adjacent properties. If your gate is sagging, binding, or dead at the board, call (877) 610-2993 and a live person answers, 24 hours a day.
Why Gatewood Fence & Gate Is SeaTac’s Preferred Gate Parts & Welding Company
Nobody in SeaTac enjoys dealing with a gate that will not close, especially when that gate guards a parking lot or a service entrance that has to stay secure overnight. Our Gate Parts & Welding team has spent years working the commercial corridors around Seattle-Tacoma International Airport, which means we stock the parts those facilities actually need: high-cycle rack and pinion drives, loop detector wire, and spring packs rated for constant duty. Residential calls are a different animal, and we treat them that way.
The work we do in SeaTac carries the 90-Day Done Right Promise in writing on every invoice. If something is not right, Hal comes back. No runaround. The phone is answered by a person, not a voicemail, and the person who shows up is background-checked and uniformed. We quote the price before any work starts, and that price does not change at the door.
Serving SeaTac means understanding that a gate hung in 1968 has a different failure profile than a gate installed last year. Older posts lean under decades of saturated soil, hinges wear into oval shapes, and the control boards are often long discontinued. We repair what can be repaired and tell you straight when replacement is the cheaper path. No upsell, no swapping parts that do not need swapping.
Our Gate Parts & Welding Services in SeaTac
Hinge Replacement
Hinge replacement in SeaTac usually starts with a leaning post, not just a worn pin. The marine moisture softens the wood or rusts the steel sleeve, and the hinge pulls loose from the post face. We cut out the failed hinge, weld a new leaf to the post or sleeve anchor, and re-hang the gate so it swings true. A hinge replaced without checking the post is a fix you will pay for twice.
Post Replacement
Post replacement on a SeaTac swing gate is rarely cosmetic. Years of rainfall and high humidity rot wood posts at the soil line, and the gate sags into the strike. We dig the old post, set a new steel post in concrete, and weld the hinge tabs at the correct height. On commercial gates we work with heavier schedule steel, because the gate may cycle hundreds of times a day.
Rail Repair
Rail repair for slide gates in SeaTac is common on the rental car and long-term parking corridors. Rack teeth strip after months of continuous use, and the gate stalls mid-cycle. We replace the rack section, re-align the drive sprocket, and check the wheels and guide rollers while we are there. A slide gate that shudders is telling you the rack is worn, and ignoring it kills the drive motor.
Custom Welding
Custom welding in SeaTac covers everything from re-welding a cracked hinge post on a 1950s chain-link gate to building reinforcement plates for a slide gate frame that has been hit by a delivery truck. The work happens in your driveway or at your facility, not at some distant shop. Hal welds on site, and the repair is done the same day in most cases. For larger fabrication, we schedule a day that works for you and keep the gate operational while we work.
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 SeaTac
We service and stock parts for the brands SeaTac property owners actually run, including Linear, Viking, Ghost Controls, and DoorKing. That matters here more than in most places. The airport-adjacent facilities lean on Viking and DoorKing our Gate Motor & Opener in SeaTac units that cycle far harder than residential ones, and we keep the high-wear components for those machines on the truck or at the shop for fast turnaround. For residential gates around SeaTac’s housing stock, we carry the linear arms, boards, and remotes for the brands that were installed in the 1980s through the 2000s. If we do not have the part, we can order it and weld the interim fix so your gate keeps working until the right component arrives.
Common Gate Parts & Welding Problems We See in SeaTac Homes
- Leaning hinge posts on 1950s-1970s swing gates. The combination of rain, saturated soil, and decades of use pulls the post out of plumb, and the gate starts dragging on the latch side. We straighten or replace the post, then re-weld the hinges so the gate swings clean.
- Moisture intrusion in outdoor control boards. SeaTac’s humidity gets into control enclosures, especially on slide gates facing the prevailing wind. Corrosion on connectors causes intermittent operation and false entrapment triggers.
- Stripped rack teeth on slide gates. On the commercial gates near the airport, the rack gets chewed up by the drive sprocket after a few months of constant cycling. The gate stalls halfway, and the motor burns itself out trying to overcome the bind.
- Worn rollers and truck assemblies. Slide gates that run on steel rollers develop flat spots, and the gate chatters instead of rolling. Replacing rollers is a small job that prevents a much larger rail replacement later.
Pricing for Gate Parts & Welding in SeaTac, WA
A typical hinge replacement on a residential swing gate in SeaTac runs $180 to $340, depending on whether the post needs reinforcement and how many hinges are involved. Post replacement for a standard 4×4 steel post set in concrete is usually $350 to $600. Rail repair on a commercial slide gate starts around $400 and goes up based on the length of rack section being replaced. Custom welding jobs are quoted by the hour plus material, with most residential repairs landing between $150 and $500. Commercial work is estimated on site because of the variables: gate length, operator wiring, and whether the lane needs to stay open during the repair. Every quote is written before work begins, and the price does not move. We offer $40 off any repair over $200, no trip charge inside the county, a free second opinion on any written estimate, and a permanent 10% discount for seniors and veterans.
We Also Serve Cities Near SeaTac
Beyond SeaTac, we work throughout the neighboring communities, including Normandy Park, Tukwila, Boulevard Park, and Riverton. The gates in those areas run the same brands and see the same rainfall. If you are in one of those towns and your gate is down, call (877) 610-2993 and our Gate Parts & Welding team will get you on the schedule.
Serving SeaTac, WA - Our Local Coverage Area
We’re based in the SeaTac 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 SeaTac
Most boards that have taken on moisture inside a SeaTac slide gate enclosure can be repaired if you catch them before the traces lift and the capacitors swell. We pull the board, clean the corrosion with a solvent wash, reflow the cracked solder joints, and replace any blown components. If the board has been wet for months, replacement is usually cheaper, and we keep common Viking and DoorKing boards in stock for the airport-area facilities. Call (877) 610-2993 and we can tell you over the phone which way your board is likely to go.
For a steel hinge post in SeaTac, we weld with a MIG setup running a wire that gives a solid, penetrating bead, then coat the weld and the post base with a zinc-rich primer before topcoat. The persistent moisture means the weld itself will hold fine; it is the untreated steel around the weld that rusts out first. We also plate the bottom of the post where it enters the concrete, because that is where water sits and causes the worst corrosion. Call us for an assessment, and we will tell you whether your post is worth welding or should be replaced.
If the gate stalls in the same spot every time, the rack teeth in that section are stripped or worn, and you need a new rack section. If the gate shudders along the whole run, the problem is usually sag or misalignment in the rail or rollers. We check the rack with a straightedge and inspect the sprocket engagement along the full travel before quoting anything. A sag correction is typically $200 to $400; a new rack section starts around $400 and goes up with length. Call us and we will diagnose it in person, free estimate included.
Yes, in most cases an older swing gate operator can take a set of aftermarket photocells wired into the existing control board, as long as the board has an auxiliary input or a safety circuit we can tap. On some very early boards from the 1960s, we install a small relay module to make the photocells talk to the motor. It is a straightforward retrofit, typically $200 to $350 parts and labor. The bigger safety question on those old gates is whether the operator has any entrapment protection at all, and we will tell you exactly what your gate is missing. Call (877) 610-2993 and we will walk through what you have.
Loop detectors and Gate Access Control in SeaTac at airport parking and rental car facilities fail because the constant vehicle traffic eventually cracks the pavement, which lets moisture into the underground wire splice, and the detector starts sensing phantom vehicles or stops sensing altogether. Rewiring works if the splice is intact and the wire insulation is sound; replacement is the answer when the loop wire has multiple breaks or the detector board itself has taken a hit from a lightning strike or power surge. A new loop detector installed runs $300 to $600 depending on the brand. Call (877) 610-2993 and we will test the loop with an inductance meter before recommending a repair or replacement.
Call Gatewood Fence & Gate for Gate Parts & Welding in SeaTac
If your gate is down in SeaTac, call (877) 610-2993. A live person answers, day or night. We will give you a straight answer on whether your gate can be repaired or should be replaced, quote the price before any work starts, and put it in writing. Hal Gatewood’s name is on the shop, and the 90-Day Done Right Promise is on every job. For gate parts and welding in SeaTac, call us today and get it fixed right.
Written by Hal Gatewood, Owner at Gatewood Fence & Gate, serving SeaTac and surrounding communities since 2001.