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Unilock Driveway & Pavers: The West Covina Owner’s Guide
Unilock driveway and paver work in West Covina typically runs between $7,000 and $18,000 installed, depending on square footage, the specific Unilock product line, and what’s underneath the surface. Most paver replacements, repairs, and new driveway installs can be scheduled within one to two weeks, not months. Where owners usually catch a problem first is in the details: a paver that’s sunk half an inch near the driveway apron, a joint that’s gone sandy and soft, or an edge row that’s started to drift outward toward the lawn. None of those look like emergencies. All of them mean water is getting where it shouldn’t, and in West Covina’s clay-heavy soil, that water is doing more work than most people realize.
We’re Mason Remodeling Co West Covina, an independent service provider. We’re not affiliated with Unilock, but we work with their pavers constantly and stock the edge restraints, bedding sand, joint compound, and replacement pavers needed to keep a Unilock driveway tight. If you’re looking at a failed section right now, call us at (707) 760-7579 and we’ll tell you over the phone whether it’s a simple re-level or a full base rebuild.
Which Unilock Models This Applies To
Unilock splits its paver lines into a few families, and the compatibility questions we hear most in West Covina come down to three of them. The Estate Series (Hollandstone, Copthorne, Brussels Block) is the most common on driveways here, and these are the pavers you’ll see on older homes near Eastland Center and the neighborhoods south of the 10. The Mattoni Series and Umbriano lines show up on newer builds and higher-end front yards, and they use a different joint width and surface finish than the older Estate pavers. The Beacon Hill and Richcliff lines are large-format slabs more often used on patios than driveways, but we do see them on driveway borders and accents.
The gotcha: Unilock changes paver names and color blends over the years, and a color called “Sierra” from a 2008 install is not guaranteed to match a 2024 “Sierra” from the current catalog. Sun fade does the rest of the work in West Covina, where summer UV is harsh enough to lighten surface color by a full shade over a decade. When we match replacement pavers, we pull from the actual paver, not the name, and we’ll often harvest extra pavers from a hidden section of the same driveway (behind a planter, under a gate) so the visible repair area matches today’s color, not the catalog’s. OEM Unilock pavers are always the first choice for a visible repair. Quality aftermarket equivalents exist for base materials and edge restraints, but we don’t substitute pavers themselves unless the owner wants an intentional redesign.
If you still have the original paver packaging or invoice, that helps. If not, measure the paver face and thickness, and take a photo in daylight. We can identify most Unilock lines from a clear photo before we ever schedule a site visit.
Styles & brands we work with
Signs Your Unilock Driveway & Pavers Is Failing
- Sunken or “dished” sections near the driveway center. This means the base aggregate under the pavers has settled or washed out. In West Covina, clay soil expands and contracts through wet winters and dry summers, and a base that wasn’t compacted in lifts will settle unevenly within two to five years. The fix is pulling the pavers, rebuilding the base, and re-laying.
- Edge pavers drifting outward or a visible gap at the border. The plastic or aluminum edge restraint has failed or was never installed properly. Once the edge lets go, the entire field of pavers starts to spread, and every paver in the outer rows loosens. This is a same-day fix if caught early and a much bigger job if ignored for a year.
- Sand washing out of the joints after every rain. Polymeric joint sand hardens when installed correctly and should stay put for years. If it’s washing out, either the wrong sand was used, it was installed on wet pavers, or the base is holding water underneath. In West Covina’s fall and winter rains, this gets worse fast.
- Cracked or chipped pavers, especially near the driveway lip. Repeated tire load at the apron or a heavy delivery truck will crack pavers that are fine in other sections. A single cracked paver is usually a quick replacement. Ten cracked pavers in one area points to a base problem underneath.
- Weeds or grass pushing up through the joints. This is almost always a sign the joint sand failed and the base layer is getting root intrusion from below. It’s cosmetic at first, but roots expand joints and let more water in, and water is what ultimately destroys the base.
See the difference
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AfterReplacement Cost & What’s Included
Here’s what we quote for Unilock driveway and paver work in West Covina, so you can self-qualify before you call:
- Paver driveway installation (new): $7,000 – $18,000 depending on square footage, Unilock line, and access.
- Paver driveway replacement (remove and re-lay existing or new pavers): $5,000 – $14,000.
- Driveway sealing for paver surfaces: $250 – $700.
- Individual paver replacement or small section repair: Generally $400 – $1,500, depending on access and how many pavers are involved.
The range is driven by three things: how much base work is needed (a failing base is the single biggest cost driver), which Unilock line you’re using (Umbriano and Beacon Hill cost more per square foot than Estate Series), and site access (a narrow side gate means material gets wheeled in by hand, not by machine). Every quote we write includes parts, labor, base material, edge restraints, joint sand, and haul-away of old material. You get the written price before any work starts, and it doesn’t change unless you ask us to add scope. That’s the rule at Mason Remodeling, not a favor we’re doing you.
DIY or Call Us?
Replacing a single paver or refreshing joint sand is work a careful homeowner can do on a Saturday, provided the base underneath is solid. Paver work is not high-tension or electrical, so there’s no injury risk in handling a single paver itself. What goes wrong in DIY is the part you can’t see: a homeowner replaces one sunken paver with new sand underneath, it looks fine for three months, and then it sinks again because the base under that spot was compacted poorly ten years ago. Now the repair area is lower than the surrounding field, and water collects there. The second common DIY miss is polymeric sand: applied too thin, on damp pavers, or without proper compaction, it fails within one season and you’re back to weeding joints.
If the issue is one paver and the driveway drains well, try it. If you’re seeing multiple sunken spots, edge drift, or sand erosion after every rain, the base is the problem and that’s a re-lay job. Call us at (707) 760-7579 and we’ll tell you honestly which one you’ve got, even if the answer is “you can do this yourself.”
FAQs
Unilock pavers themselves will last 30 to 50 years; it’s the base, edge restraints, and joint sand that fail first, usually showing problems within 5 to 15 years depending on soil and drainage. A well-built base in West Covina’s clay soil typically gets you 20+ years before you’re re-leveling sections, not the pavers. Call (707) 760-7579 and we’ll tell you what shape your base is in.
Yes, in most cases a section repair is completely viable; the pavers are modular and designed to be lifted and re-laid. The limit is material matching (color fade over time) and base condition. If the base under a smaller area is solid, we repair just that section. If the base has failed across half the driveway, patching it section by section just moves the problem around, and a full re-lay ends up cheaper over three years. Estimates are free, so call (707) 760-7579 and we’ll tell you which situation you’re in.
Most section repairs and single-paver replacements are done in one day; a full driveway re-lay with base rebuild typically runs three to five working days depending on size and access. Rain in January or February can add a day or two since we can’t compact wet base material properly. We’ll give you a schedule in writing before we start, and we hold to it.
We handle sourcing for nearly every Unilock line and we keep common repair materials on hand, including edge restraints, bedding sand, and polymeric joint sand. For specific paver lines and colors, we order directly through Unilock’s supply network and confirm availability before we quote. We also work with KraftMaid, Cambria, and Silestone on the interior side, so if your paver project is part of a bigger front-yard or exterior plan, we can quote the whole scope at once.
Ready to get a real number? Call (707) 760-7579 for a free estimate on your Unilock driveway or paver repair in West Covina. A live person answers, you get a written price before anything starts, and if the work isn’t right within 365 days, we make it right at no cost. You should know what you’re getting before we ever pick up a tool.
Written by Isaac Pruett, Owner, Mason Remodeling Co West Covina at Mason Remodeling Co West Covina, serving West Covina and nearby areas.
