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Unilock Construction in San Antonio Heights, CA | Alder Contractors
We’re Alder Contractors, and we provide independent Unilock paver and wall installation and repair across San Antonio Heights. We’re not a manufacturer affiliate or an authorized dealer – we’re a local general contractor whose crews have spent years working Unilock products onto the steep, decomposed-granite lots that define this foothill community. Unilock pavers behave differently up here than they do on flat valley ground, and that hard-won knowledge is what you’re paying for. Call us at (833) 467-7020 for a free estimate on any Unilock project.
Why San Antonio Heights Residents Choose Us for Unilock Service
Nelson Ibarra, who owns Alder Contractors, grew up working construction across the Inland Empire and learned early that a paver is only as good as the base beneath it. That lesson matters more in San Antonio Heights than almost anywhere else in San Bernardino County. We’ve torn out enough failed Unilock installations on hillside lots to know exactly where corners get cut — unlike a typical Unilock repair in Claremont — and exactly what it takes to keep them from failing again.
We’re Unilock sales & service specialists in the practical sense, not the marketing sense. We stock OEM Unilock pavers and approved accessories for color and dimensional consistency. For hidden components like base aggregate and polymeric sand, we select high-quality aftermarket materials that hold up to San Antonio Heights heat, Santa Ana winds, and winter runoff. We give you an honest repair-vs-replace assessment every time – sometimes re-sanding and re-leveling is enough; other times a partial or full replacement is the smarter long-term fix. No authorization badge, just field truth.
Styles & brands we work with
Common Unilock Construction Problems We Solve in San Antonio Heights
- Hillside runoff and efflorescence under Unilock pavers. When winter rain hits steep San Antonio Heights slopes, water moves fast. Without proper drainage swales and a compacted base, that runoff erodes the sub-base, causing pavers to settle, shift, and develop white efflorescence stains. We re-grade, add drainage, and rebuild the base so water goes around the install, not through it.
- Decomposed granite heaving and joint sand loss. The soil up here is mostly decomposed granite. It drains well in dry months but gets unstable when saturated. We see Unilock paver surfaces heave unevenly and lose joint sand where edging restraint was skimped. We install reinforced edging and replace joint sand with a high-temp polymeric blend suited to the local soil.
- Santa Ana wind-driven embers scorching polymeric sand. In wildfire season, embers get pushed into dry paver joints. Cheap polymeric sand melts or scorches. On fire-hardened San Antonio Heights properties, we use heat-resistant joint compounds and dense-joint Unilock patterns that leave less material exposed to ember damage.
- Rutting and paver cracking on steep, narrow driveways. Unilock pavers on a sloped driveway need more than standard base compaction. Vehicle weight plus gravity plus a marginal base equals rutting and cracked pavers. We over-excavate, use geogrid reinforcement where the grade calls for it, and compact in lifts before a single paver goes down.
- Failed edging restraint on winding foothill driveways. Where driveways curve tightly off Mountain Avenue and San Antonio Canyon, lateral pressure builds. Without deep, anchored edging, Unilock pavers migrate outward and the pattern opens up. We use concrete haunching and steel edging that actually holds the line.
Unilock Service in San Antonio Heights: What Local Conditions Mean for Your Equipment
The narrow, winding access off Mountain Avenue and San Antonio Canyon changes how every Unilock delivery and install gets staged. Unilock in Upland means standard flatbeds and full-size concrete trucks run without a second thought. Up here, those trucks cannot turn around. We routinely plan Unilock paver deliveries around smaller vehicles or staged drop-offs at the base of a drive, then move material up with a skid steer or tracked loader sized for the turn radius. It adds coordination time, but ignoring it is how you end up with a paver pallet blocking a fire access lane or a concrete pour setting up before the second truck arrives. Our crews know the streets off Mountain Avenue well enough to plan pours and staging around limited turnarounds and steep driveways the first time, not the second.
On a steep driveway off Mountain Avenue, we replaced a failing Unilock Brussels Block surface that had settled and cracked from years of runoff and poor base prep. After re-grading and compacting a proper base, we installed new Brussels Block with reinforced edging and polymeric sand, and added a drainage swale to divert winter flows. The homeowner now has a stable, fire-resistant driveway that handles the slope and seasonal rain without shifting.
Unilock Models & Products We Service in San Antonio Heights
We work with the Unilock product lines most common in San Antonio Heights: Unilock Brussels Block for driveways and heavy-load surfaces, Unilock Copthorne for a more formal paver patio or walkway look, Unilock Estate Wall for retaining and freestanding walls that hold back foothill slopes, and Unilock Beacon Hill for homeowners who want a blended, natural stone appearance. For paver replacements and additions, we source OEM Unilock units to match existing color and dimensions. For base, bedding, and joint materials, we pull aftermarket products rated for the heat and fire exposure San Antonio Heights demands. That’s the mix that makes an install hold up.
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AfterUnilock Service Pricing in San Antonio Heights
Unilock paver work in San Antonio Heights runs higher per square foot than valley work, because base prep, drainage, and hillside access cost real labor hours. Here are the ranges we quote most often:
| Service | Typical Price Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
Slope, soil condition, access limitations, and whether drainage work is needed all move the number. Your free estimate includes a site walk, a written line-item scope, and a plan for getting material up the hill without drama. Call (833) 467-7020 for an exact quote.
Serving San Antonio Heights, CA — Our Local Coverage Area
We’re based in the San Antonio Heights area and know this community well. Use the map below to see our service coverage — if you’re nearby, we can almost certainly help.
FAQs – Unilock Construction in San Antonio Heights
Yes, but only with a properly engineered base, geogrid reinforcement on grades over about 8%, and drainage designed to move water away from the paver system. The decomposed granite soil and winter runoff up here mean a standard flat-ground install will fail within a few seasons. We over-excavate, compact in lifts, and add drainage as standard practice on hillside Unilock driveways. Call (833) 467-7020 for an assessment of your specific slope.
Decomposed granite is stable when dry but loses bearing capacity when saturated, which is why San Antonio Heights Unilock installs need deeper sub-base compaction and better edge restraint than valley jobs. We address it with over-excavation, a thicker compacted aggregate base, and anchored edging so pavers don’t migrate under load or heave after winter rain. It’s a known local condition, and we plan for it on every Unilock project here.
Dense, tight-jointed Unilock units like Brussels Block and Estate Wall hold up better than open patterns when Santa Ana winds drive embers across the property. Pair them with a heat-resistant polymeric sand and minimal joint exposure, and the hardscape itself won’t become a fuel source. We also keep defensible-space considerations in mind when laying out paver patios and walkways on San Antonio Heights lots. Call (833) 467-7020 to talk through fire-conscious Unilock options.
We stage big deliveries at the base of the drive or on the nearest turnaround, then shuttle material up with equipment sized for the grade and turn radius. Streets off Mountain Avenue and San Antonio Canyon are too narrow for full-size delivery trucks in many spots, so we plan drop-offs around that reality from day one. It’s slower, but it’s the only way to keep the site safe and the schedule honest.
Often, yes. If the base is still sound and the failure is mostly joint sand loss, surface staining, or isolated settling, we can re-level, re-sand, and re-compact without tearing everything out. If the base has eroded or the edging has failed, a partial or full replacement is usually the better long-term fix. We’ll show you what’s under the surface before you spend a dollar. Call (833) 467-7020 for a repair assessment.
Service Areas Near San Antonio Heights
Alder Contractors provides Unilock construction service across San Antonio Heights and the surrounding Inland Empire communities. We work regularly in Bloomington, Muscoy, Fontana, Colton, San Bernardino, and Grand Terrace. If you’re outside the immediate foothill area, call and we’ll confirm coverage. You can also learn more about our San Antonio Heights service area, read about Unilock service in Home Gardens, or see our Unilock service in Montclair page.
Book Your Unilock Service in San Antonio Heights Today
If your Unilock driveway, patio, or retaining wall is shifting, spalling, or losing sand, don’t wait for the next Santa Ana season to make it worse. Call Alder Contractors at (833) 467-7020 to schedule your free Unilock estimate in San Antonio Heights. Do it right the first time – the callback always costs more than the extra hour up front.
Written by Nelson Ibarra, Owner at Alder Contractors, serving San Antonio Heights and the Inland Empire since 1995.