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Unilock Fence Installation: The Dallas Owner’s Guide
Unilock fence installation in Dallas typically runs $3,500 to $9,000 installed, depending on the linear footage, the Unilock product line you’re matching, and what kind of base prep your yard needs. We stock Unilock-compatible fence components and install them regularly across Dallas, from Lake Highlands to Oak Cliff. Most homeowners discover they need us the same way: a fence panel starts leaning after a storm, a post wobbles at the base, or a gate stops latching because the concrete footing cracked and shifted. You should know who is coming, what it costs, and what happens if something goes wrong – before we ever pick up a tool.
Mason Remodeling Co Dallas is an independent service provider. We’re not affiliated with Unilock, but we’ve installed and repaired their fence systems long enough to know which parts fail first in North Texas soil and what it actually costs to fix them right.
Which Unilock Models This Applies To
Unilock doesn’t make a single monolithic “fence” product. Their hardscape fencing typically falls into a few categories: modular retaining wall blocks used as fence bases, coordinating post-and-panel systems from their Estate and Brussels Dimensional lines, and stone-look column caps that pair with aluminum or PVC infill. If you have a Unilock fence in Dallas, it’s most likely a hybrid: Unilock block columns or base courses with a metal or vinyl panel system between them.
The compatibility gotcha that trips up most owners is the column block dimension. Unilock’s standard structural wall block runs 6 inches high, but their column-specific units (like the Brussels Dimensional column wrap) are often 8 inches or modular 12-inch stackers. If someone sold you a “matching” block that’s an inch off, the cap won’t sit flush and water will pool on top – which is exactly what causes spalling after a few freeze-thaw cycles. The second spec to check: post-hole depth for Unilock base courses in Dallas needs to go below the frost line, which is shallow here, but more importantly below the expansive clay zone. North Texas clay moves seasonally. A fence post set in 18 inches of clay will heave and lean within two years. We set structural fence posts at 30 to 36 inches and backfill with crushed limestone, not the original soil.
For OEM versus aftermarket on Unilock: the OEM blocks hold their color better because the pigment runs through the full unit. Cheap aftermarket capstones and column units are surface-stained, and after three Dallas summers at 100 degrees plus, they fade to a chalky pink. For structural block, OEM is worth the cost. For things like adhesive, drainage aggregate, and post hardware, we use professional-grade equivalents that outperform the branded bagged stuff.
Styles & brands we work with
Signs Your Unilock Fence Installation Is Failing
- Leaning or tilting panels, especially after rain. This almost always means the footing was too shallow or set directly into expansive clay. When the clay swells, it pushes; when it shrinks, it pulls away. The post loses lateral grip and starts to lean.
- Cracks running vertically through a column block. Water got inside the core, froze, or the column wasn’t properly reinforced. Unilock columns need a concrete-filled core with rebar, not just dry-stacked block. Dry-stacked columns fail at the mortar joints first, then the block itself cracks.
- White, chalky residue on the block face. That’s efflorescence, and while it’s not structural, it tells you water is moving through the wall. It’s a symptom of missing or clogged drainage behind the fence base. Left alone in Dallas, trapped moisture plus summer heat accelerates surface breakdown.
- Gate sagging or dragging on the latch side. The gate post has shifted. It’s not the hinges. When a post moves even a quarter inch, the gate geometry goes out of alignment. Adjusting hinges without fixing the post just buys you a few months.
- Capstones loose or missing entirely. Most installers use the wrong adhesive. Unilock caps in full Texas sun need a polyurethane construction adhesive rated for exterior stone and thermal movement. Landscape block adhesive that hardens like glass will crack within one season of expansion and contraction.
We’ve seen all five of these in Dallas neighborhoods, and here’s the dry observation from Isaac Pruett: a leaning fence is like a dripping faucet. The day you notice it is the cheapest day to fix it. Every season it sits there, the repair gets bigger.
See the difference
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After
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AfterReplacement Cost & What’s Included
A full Unilock fence installation in Dallas runs $3,500 to $9,000 for a typical residential run of 40 to 100 linear feet. A repair involving post resetting, block replacement, or cap re-adhesion runs toward the lower end of that range. A full tear-out and rebuild with new OEM Unilock block, proper drainage, and reinforced column cores lands at the upper end.
What drives the price:
- Linear footage. More fence, more material, more labor.
- Access. If we’re hand-carrying block through a side gate instead of driving it to the back with a skid steer, labor hours go up.
- Site drainage. Fences that sit at the bottom of a slope need a drainage course behind them – crushed stone, perforated pipe, and filter fabric. Skipping it is why Dallas fences fail early.
- Column count. Columns are the slowest, most expensive part. Each one needs a footing, vertical rebar, concrete fill, and time to cure before the cap goes on.
Every quote from Mason Remodeling Co Dallas is a written price before any work starts. Not a verbal estimate that grows on the final bill. The price includes demolition and haul-off of old material, excavation, base prep, installation, and cleanup. Our 365-Day Done Right Promise covers the completed fence for a full year from the completion date: if something shifts, cracks, or comes loose, we come back and make it right at no cost to you.
DIY or Call Us?
There are things you can safely check yourself. Walk the fence line and look for loose caps, visible cracks, or panels leaning more than they did last season. You can check that the gate latch still lines up. You should not try to reset a post in a structural Unilock fence yourself. A fence post with a concrete-fill column on top is heavy enough to cause serious injury if it gets away from you mid-lift, and a bad reset means the column cracks, the panel breaks, and you’re now paying for the repair you tried to avoid plus the rebuild. We get called to fix DIY fence repairs every month in Dallas, and they typically cost more than the original fix would have.
If you’re not sure whether what you’re seeing is cosmetic or structural, call (432) 302-8761. We’ll tell you what we think over the phone, and if you want a written price, the estimate is free.
FAQs
A properly installed Unilock fence in Dallas should last 25 to 40 years with no structural movement, though capstones and surface sealant may need attention every 5 to 8 years due to UV exposure and our freeze-thaw cycles. The fence fails early in Dallas when the base wasn’t prepped for expansive clay, so the 25-year clock only starts ticking if the footing and drainage were done right on day one. We see fences we installed 15 years ago still dead straight, and we see 5-year-old fences that look like the Leaning Tower. The difference is always the base. Call (432) 302-8761 and we’ll give you an honest read.
Yes, in most cases we can repair a Unilock fence by resetting posts, replacing cracked block, re-adhering caps, and adding drainage instead of doing a full rebuild. The exception is when the base course was so badly installed that the entire fence has shifted off-line; at that point, piecing it back together costs more than starting clean. We’ll tell you which one you’re looking at before we quote anything – a written price either way.
A typical repair takes one to two days, and a full fence installation in Dallas runs three to five days, depending on column count and whether concrete footings need cure time before we stack on them. We schedule the job, tell you who’s coming, and give you the crew’s name and photo before they arrive. Call (432) 302-8761 for a timeline specific to your job.
We stock the most commonly needed Unilock-compatible fence components on our trucks: capstones, adhesive, post hardware, drainage material, and structural block for the standard Unilock lines used in Dallas installations. OEM Unilock block in less common colors or discontinued series usually needs to be ordered from the regional Unilock distributor, which adds two to five business days. We also work with specification-grade material partners across hardscaping including Belgrad, Unilock, and Techo-Bloc, so if you need a specific product matched, we have the supplier relationships to get it. Call (432) 302-8761 and we’ll check stock while you’re on the phone.
Written by Isaac Pruett, Owner, Mason Remodeling Co Dallas at Mason Remodeling Co Dallas, serving Dallas and nearby areas.
