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Unilock Construction in Montclair, CA | Alder Contractors
We install and repair Unilock paver driveways, patios, and retaining walls across Montclair, and we’re independent, which means we’ll tell you straight when a Unilock repair in La Verne or here makes sense and when a full rebuild is the only honest fix. What makes our Unilock work different in Montclair specifically is that we plan every base around the city’s older slab-on-grade foundations and expansive clay, not generic subdivision specs. Call (833) 467-7020 for a free estimate on any Unilock paver project in the 91763.
Why Montclair Residents Choose Us for Unilock Service
We’ve installed Unilock pavers on enough 1950s ranch tracts and post-1980s infill lots around Montclair to know that one street’s base prep isn’t the next street’s base prep. Nelson Ibarra, owner of Alder Contractors, grew up in Rialto and spent almost three decades building across the Inland Empire before training our crews on Unilock’s installation specs. We’re not authorized by Unilock, and we won’t pretend to be. What we are is a licensed general contractor that knows how their pavers and walls behave on this region’s clay soils and under summer heat that regularly crosses 100°F. We bring Unilock sales & service experience to every Montclair job, from a small patio reset to a full driveway replacement off Holt Boulevard.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Montclair
- Efflorescence on Brussels Block and other concrete pavers. Montclair’s winter rains, combined with irrigation runoff from older ranch lots with flat grading, leave whitish mineral deposits on paver surfaces. Poor base drainage underneath makes it worse. We clean the surface and address the drainage that caused it, rather than just scrubbing the symptom.
- Edge raveling and joint sand loss on driveways. Santa Ana wind-driven dust and 100°F+ afternoons cause Unilock pavers to expand and contract. Without proper edge restraints, driveway borders start to spread and joint sand blows out. We reset edges using Unilock’s OEM restraints and re-compact with polymeric sand.
- Settlement and heaving over expansive clay. Montclair’s pre-1980 tracts sit on clay that swells with winter moisture and shrinks in summer heat. Unilock patios and driveways built without a proper base will settle unevenly, leaving trip hazards and low spots that pool water against the home’s slab.
- Color fading and surface wear on Umbriano pavers. Intense Inland Empire UV exposure combined with periodic power washing without resealing dulls Umbriano’s surface. We can restore with proper cleaning and sealing, or reset damaged units where fading is severe.
- Pooling water against slab-on-grade foundations. In the older tracts off Holt and Ramona, the original lots were graded flat, not sloped away from the house. When we replace a cracked concrete driveway or patio with Unilock pavers, we re-grade the base so water sheds away from the foundation instead of toward the garage.
Unilock Service in Montclair: What Local Conditions Mean for Your Equipment
Montclair is one of the few Inland Empire cities where 1950s-60s ranch tract homes, post-1980s infill, and newer dense housing along the 10 freeway sit within blocks of each other. That mix matters more than most homeowners realize. In the older ranch tracts off Holt and Ramona, the original concrete slab-on-grade and shallow footings mean any paver patio or driveway base we build has to be engineered around the city’s older grading and drainage patterns, not the newer subdivision standards just down the street. A homeowner on an original 1958 lot may have zero slope away from the house, while a neighbor in a 2005 infill has proper drainage but sits on compacted fill that settles differently. We read each lot separately before we ever order a pallet of Unilock Brussels Block, because the base is what determines whether the pavers last five years or fifty, just as we do for Unilock service in Upland.
Unilock Models & Products We Service in Montclair
We install and repair the full range of Unilock concrete paver lines, including Brussels Block, Beacon Hill, Town Hall, and Umbriano. Where paver edges have spread or joint sand has failed, we use Unilock’s OEM edge restraints and polymeric sand to hold the system to spec. We stock quality aftermarket base materials that meet or exceed Unilock’s requirements, so we’re not waiting on a supplier run when a Montclair driveway needs a base correction. And we’re straightforward about repair versus replace: isolated settling can often be lifted and reset with proper compaction. Widespread base failure over bad clay needs a full rebuild, because resetting pavers on a failed base just means the same problem comes back in two seasons. We tell you which one you’re looking at before any work begins.
See the difference
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After
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AfterUnilock Service Pricing in Montclair
| Service | Price Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
| Driveway Sealing | $250 – $700 |
What drives cost on a Montclair Unilock job: base depth and correction. If your existing driveway or patio sits on clay that’s heaved or compacted fill that’s settled, we have to excavate and re-engineer the base before the first paver goes down. If the base is sound, we reuse what we can and your price stays toward the lower end. Every estimate is free and line-itemed, so you see exactly what you’re paying for. Call (833) 467-7020 for a written quote on your Unilock project.
Serving Montclair, CA — Our Local Coverage Area
We’re based in the Montclair area and know this community well, and we also provide Unilock service in Ontario. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Unilock Construction in Montclair
We can in some cases, but we usually don’t recommend it. An overlay works when the existing slab is structurally sound and hasn’t cracked from Montclair’s expansive clay movement. Most 1950s-60s ranch driveways off Ramona and Holt have already cracked, heaved, or settled, and laying pavers over a moving slab just transfers the problem upward. We’ll tell you after looking at the concrete. Call (833) 467-7020 and we’ll come out for a free assessment.
Efflorescence is driven by water moving through the paver and carrying minerals to the surface. In Montclair, that water comes from winter rain and irrigation runoff on older lots with flat grades. We prevent it by building proper base drainage and slope before installing, and by using a compatible joint sand that doesn’t contribute excess minerals. On existing installations we clean the surface and correct the drainage. Call (833) 467-7020 and we’ll look at what’s feeding the white deposits on your pavers.
On Montclair’s expansive clay, we typically excavate 6 to 8 inches for pedestrian patios and 8 to 10 inches for driveways, then compact a crushed stone base in lifts. That depth is not a guess; it’s what prevents the clay’s winter swell and summer shrink from telegraphing through your pavers. Shallower bases fail here, and we’ve seen plenty of them.
Usually, yes, if your concrete has already cracked from the clay movement most older Montclair lots experience. Unilock pavers flex with soil movement instead of cracking, and a properly built base with good drainage can outlast slab concrete here by decades. We’ll give you repair-versus-replace numbers for your specific driveway. Call (833) 467-7020 for a free estimate.
Yes. Isolated settlement from a localized clay pocket or inadequate base can often be fixed by lifting and resetting the affected pavers with proper compaction. If the settlement is widespread and the base was poorly built from the start, a full rebuild is the lasting fix, and we will say so plainly. Do it right the first time, the callback always costs more than the extra hour up front. Call (833) 467-7020 and we’ll assess whether we’re resetting a section or rebuilding the full patio.
Service Areas Near Montclair
Our crews work across the western Inland Empire, including Bloomington, Muscoy, Fontana, Colton, and San Bernardino. We also serve Montclair service area neighbors further east, and our Unilock expertise extends to Unilock service in Calimesa and Unilock service in Oak Hills for foothill projects with their own soil and drainage conditions.
Book Your Unilock Service in Montclair Today
Tell us what you’re seeing on your driveway, patio, or retaining wall, or reach out for Unilock in Claremont. We’ll come out, read your lot, and give you a straight answer on repair versus replace with line-item pricing. Call (833) 467-7020 to schedule your free estimate.
Written by Nelson Ibarra, Owner at Alder Contractors, serving Montclair and the Inland Empire.