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Unilock Fence Installation: The West Covina Owner’s Guide
Unilock fence installation in West Covina typically costs between $3,500 and $9,000 for a complete hardscape fence or fence-and-post system, depending on linear footage, site prep, and whether we’re working with Unilock pillars, caps, or wall units. We stock Unilock-compatible fence components and can typically schedule installation within one to two weeks of your free estimate, not months out. Most West Covina homeowners call us after noticing leaning posts, cracked caps, or shifting wall units, problems that almost always trace back to improper base preparation or the wrong adhesive for our climate’s freeze-thaw and heat cycles.
Before we touch the blocks, you should know two things: this kind of work fails when the base fails, and nobody should open a trench under a fence line without checking what’s already buried. West Covina neighborhoods from the South Hills to the area around Cameron Park have older irrigation lines we’ve had to reroute more than once.
Which Unilock Models This Applies To
Unilock doesn’t make a traditional “fence” the way a vinyl or aluminum manufacturer does. What homeowners call a Unilock fence is usually a built structure: Unilock pillar units, caps, and wall block assembled into fence columns, or a short Unilock wall system topped with fence panels. The most common lines we install in West Covina are the Rivercrest Wall, Lineo Dimensional Stone, and Estate Wall systems, all of which accept Unilock’s standard cap units and pillar accessories.
Here’s the compatibility gotcha we see on job sites: Unilock caps are not universal across product lines. A Rivercrest cap is sized and textured differently from an Estate Wall cap, and using the wrong cap leaves an overhang that catches water, which is exactly how cap failure starts. We verify the block series by measuring the unit’s face height and checking the manufacturer’s stamp on the underside of a spare block. If you’ve lost the paperwork, bring a single block or cap to our shop and we’ll match it. For replacement parts, we use OEM Unilock components when available because the color blend and surface texture match the existing installation. Aftermarket equivalents exist, but the color variance is usually visible within two years of UV exposure, and that’s a trade-off we’d rather you not make.
Styles & brands we work with
Signs Your Unilock Fence Installation Is Failing
- Leaning pillars or end posts. This is almost always a base problem, not a block problem. In West Covina’s clay-heavy soil, a base poured too shallow or without proper drainage heaves after one or two wet winters. The block is fine; the footing needs rebuilding.
- Cracked or spalled caps. Caps take the full force of sun and rain. When water sits on a cap and the temperature drops, micro-fractures open up. A cracked cap is a warning that water is getting into the column core.
- White chalky residue on block faces. Efflorescence is normal in California hardscaping, but heavy buildup signals trapped moisture behind the block, which usually means the drainage gravel was skipped or insufficient.
- Gaps opening at the joints. If the mortar or adhesive joints are pulling apart at the base while the top looks fine, the footing is settling unevenly. This gets worse, not better, and shimming the top only hides the problem.
- Fence panels pulling away from the pillars. When a wood or aluminum fence panel is bolted to Unilock columns, the anchor is only as good as the column’s core fill. We’ve opened columns in West Covina that were hollow. The panel was held by four screws into half an inch of block face.
See the difference
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AfterReplacement Cost & What’s Included
A full Unilock fence installation in West Covina starts around $3,500 for a short run with two pillars and a simple panel, and runs up to $9,000 for longer runs, taller walls, or jobs that require removing and hauling away an old fence footing. The biggest cost drivers are linear footage, soil conditions, and whether we’re rebuilding an existing base or starting fresh. Here’s how the numbers break down:
- Pillar and cap replacement only: $800 – $2,500 per pillar, including core fill and re-anchoring the panel.
- Full Unilock fence with pillars and wall base: $3,500 – $9,000 depending on length and block series.
- Base rebuild (excavation, gravel, concrete footing): $1,200 – $3,500 when the existing base has failed.
Every quote from us is a written, line-item price before any work starts. That price includes material, labor, debris haul-away, and the workmanship warranty, stated in writing. If something costs more, we tell you before the work starts, not after. We’ve worked throughout West Covina long enough to know that nobody wants a surprise invoice on a fence they’ve already paid for once.
DIY or Call Us?
Replacing a single cap or re-pointing a small joint is work a careful homeowner can tackle with the right adhesive and a clean surface. The dangerous part is what’s underneath: fence lines in West Covina routinely share ground with gas lines, electrical conduit, and irrigation piping. Digging a new footing without a utility locate is how a $200 cap swap becomes a five-figure repair. Call 811 before you dig anything, every time.
The base work, the part where most Unilock fences fail, is not a weekend project. Compacted gravel, proper drainage, and concrete footings poured below the frost line take equipment and experience. If your pillars are leaning, the fix is under the ground, and that’s exactly where a homeowner should not be guessing. If you’re not sure whether you’re looking at a cosmetic fix or a structural one, call us at (707) 760-7579 and we’ll tell you straight.
FAQs
A properly installed Unilock fence with a correctly built base lasts 25 to 40 years in Southern California’s climate, though caps may need replacing around year 15 due to UV and water exposure. The block itself rarely fails; the base and the caps are the components that give out first. Call (707) 760-7579 if you want us to assess whether your fence is failing early or just aging normally.
Usually not. A leaning pillar means the footing has shifted or the base has washed out, and the only honest fix is to excavate, re-compact, and pour a new footing. We’ve seen contractors try to straighten pillars with shims and adhesive, and those jobs fail again within a season. We’d rather rebuild it once and be done.
A simple pillar-and-panel replacement takes one to two working days once materials are on site. A full fence with a base rebuild takes three to five days, depending on the length of the run and what we find when we open the ground. We’ll give you a written schedule before we start.
We keep common Unilock caps, wall units, and adhesives in our West Covina stock, and we can source full pallets of Rivercrest, Lineo, and Estate Wall materials within a week. We also work with KraftMaid, Cambria, and Silestone products on larger property projects, so if your fence is part of a bigger hardscape plan, we can coordinate it all in one scope.
Written by Isaac Pruett, Owner, Mason Remodeling Co West Covina at Mason Remodeling Co West Covina, serving West Covina and nearby areas.
