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Unilock Fence Installation: The Jacksonville Owner’s Guide
If you have Unilock fence panels or posts that have shifted, cracked, or pulled away from their footing, we install and replace Unilock-compatible fence systems in Jacksonville, with most complete fence installations running $3,500 to $9,000 depending on linear footage, terrain, and whether we’re pulling old concrete footings. We stock the common Unilock post anchors, panel brackets, and base plates on the truck, so a standard section swap is usually handled in a single visit. How owners usually find us: a post has gone visibly out of plumb after a hard rain, a panel corner has spider-webbed from salt air, or the gate no longer latches because the post assembly has drifted.
What matters most with Unilock fence work in Jacksonville is not the panel itself. It’s what holds the panel to the ground and to the next panel. Unilock fence systems depend on precise post spacing and square anchor placement. When one element moves, the whole run shows it within a season. We’ll walk you through what matches, what doesn’t, and what it costs before any work starts – that’s the written price promise we make on every project, including this one.
Which Unilock Models This Applies To
The Unilock fence line most common in Jacksonville is the Estate Wall and fence-post-and-panel system, which uses modular concrete post blocks with a hollow core, filled with rebar and concrete on site. We work with the full Unilock post-and-panel hardware set: post caps, base plates, panel shims, and the anchor brackets that tie panels into posts. If your fence was built with Unilock’s Brussels Dimensional, Lineo, or U-Cara post blocks, the hardware is the same family and we can match it.
One compatibility gotcha that matters in Jacksonville: Unilock post blocks are sized in metric increments, so a standard 4×4 pressure-treated insert does not always seat flush. You need the Unilock-specific insert or a properly shimmed equivalent. We’ve seen well-meaning handymen force a big-box post insert into a Unilock block and then wonder why the post leans within a year. The answer is usually the insert gap plus Jacksonville’s sandy soil and heavy summer rain.
On OEM versus aftermarket: Unilock’s own aluminum post inserts and panel brackets are built to the exact block dimensions, and they’re what we spec when the structure below grade is still sound. For above-grade hardware like caps and decorative panel clips, quality aftermarket equivalents from names like RDI and Deckorators hold up fine in our salt-air environment, but they need to be matched to the metric opening. We’ll price both ways and let you choose.
For the record: Elmstead Remodeling Jacksonville is an independent service provider. We are not a Unilock dealer or an affiliate of the manufacturer. What that means in practice is we have no incentive to push a Unilock part when a less expensive, equally durable option will do the job.
Styles & brands we work with
Signs Your Unilock Fence Installation Is Failing
- Post visibly out of plumb after rainfall. The cause is almost always washout around the footing or a post insert that was never properly seated in the block. Left alone, the post will keep leaning and pull the attached panels with it.
- Hairline cracks running through panel corners or along the bottom rail. In Jacksonville, this typically starts as salt intrusion from coastal air or sprinkler overspray hitting the same spot every morning. Once water gets into a micro-crack, the summer heat expands it and the crack opens up.
- Gap opening between panel and post that wasn’t there at installation. This usually traces back to a missing or corroded panel bracket. The panel is still intact, but it’s no longer anchored – a strong gust off the St. Johns can pop it loose entirely.
- Gate sags or won’t catch the latch by late afternoon. Sun exposure on the hinge side causes the post assembly to expand at a different rate than the gate leaf. If the post base plate has any play, the misalignment gets worse through the day.
- White chalky residue on the post base or hardware. That’s oxidation from the aluminum insert reacting to salt and moisture. It isn’t cosmetic – it signals the insert is losing material and the mechanical bond between post and block is degrading.
See the difference
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After
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AfterReplacement Cost & What’s Included
In Jacksonville, a complete Unilock fence installation or replacement on flat, accessible ground runs $3,500 to $9,000. The two biggest cost drivers are linear footage and what the crew finds underground when we pull the old posts – old concrete, buried utilities, or roots from live oaks all add labor. A single post reset with new insert and backfill typically runs $350 to $600, and a panel bracket replacement with leveling is usually $150 to $300 per panel.
Every quote includes the written line-item breakdown before we start: parts by name, labor by stage, disposal, and the condition of the ground we’re leaving behind. No allowance lines. Name the material, name the day, name the price – then there is nothing left to wonder about.
The work itself carries our 365-Day Done Right Promise. If a post we set shifts or a bracket we installed lets go within the year, we come back and make it right. The crew wears shoe covers if they need to cross your house, lays drop cloths where panels are being staged, and sends you a photo of the cleanup before we pull out of the driveway.
DIY or Call Us?
What an owner can safely do: check the post bases for washout after a storm, clear sprinkler heads so they don’t spray the panel bottoms, and photograph any cracks as they appear so we can track movement over time. None of that requires tools, and it gives us useful information before we arrive.
Where DIY goes wrong on Unilock fence work is below grade. Pulling a post block, repacking the footing, and reseating the insert correctly takes a level, a compactor on some jobs, and the right concrete mix for sandy Jacksonville soil. Get the pack wrong and the post drifts again by next hurricane season. Get the insert gap wrong and you’ve created the exact failure you were trying to fix. If you’re considering doing it yourself, at least send us photos of the posts and hardware first – we’ll tell you honestly whether it’s a weekend job or a professional one. Call (904) 643-6243 and we’ll walk you through it.
FAQs
With correct footing compaction and stainless or powder-coated hardware, a Unilock fence in Jacksonville should stay structurally sound for 20+ years, with re-leveling or bracket service every 5 to 7 years due to our sandy soil and seasonal ground shift. If a post is leaning in year two, the footing or insert was the problem, not the product. Call (904) 643-6243 and we’ll inspect it before you spend money on a guess.
Yes, if the post block isn’t cracked and the insert hasn’t corroded through, the post can usually be stabilized by pulling it, re-compacting the base, and sealing the insert against further salt intrusion. If the block itself is cracked, replacement is the honest fix. The only way to know is to expose the base and look – call (904) 643-6243 and we’ll determine that on site.
A single post reset runs four to six hours including concrete cure time for the backfill. A complete panel and post run under 50 linear feet is usually completed in two days. We schedule around your family’s quiet hours when possible – children’s naptime means no impact drivers at full speed, and we’ll confirm the timing with you before the crew arrives.
We stock the common Unilock post inserts, base plates, panel brackets, and post caps on the truck for the post-and-panel systems used across Jacksonville. If your install uses a less common U-Cara or Lineo block size, we source it through our local masonry supplier, typically a two-to-three day lead. Either way, you’ll have the part name and the price in writing before we order anything.
Written by Graham Stein, Owner, Elmstead Remodeling Jacksonville at Elmstead Remodeling Jacksonville, serving Jacksonville and nearby areas.
