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Unilock Construction in Fontana, CA | Barrett & Sons Construction
We’re Barrett & Sons Construction, and we handle Unilock paver driveways, patios, and retaining walls across all four Fontana ZIP codes. We’ve been doing this since 1998. Here’s the thing most contractors won’t tell you upfront: the soil under your Fontana lawn, especially on the west side, may be hiding industrial fill from the old Kaiser Steel mill that will wreck a standard paver base within five years. Call us at (877) 610-1318 and we’ll tell you what’s actually under your yard before we quote a single paver.
Why Fontana Residents Choose Us for Unilock Service
Tom Barrett started this company in 1998, and his sons run the crews now. Tom grew up in the San Fernando Valley and learned the trade at Los Angeles Trade-Technical College, starting with framing before spending enough hours in the field to know that the job never lies. That background matters when you’re tearing out a failed Unilock driveway in Fontana and finding black slag where the base should be. We’ve pulled old mill tailings out of front yards in the Miller Street corridor more than once. We know Unilock’s product lines like Beacon Hill Flagstone, Bristol Valley, Brussels Block, and Richcliff because we’ve installed them, repaired them, and torn out plenty of failed jobs from other contractors who didn’t understand Fontana soil. We’re an independent contractor, not a manufacturer-authorized dealer, and that’s exactly why our advice is worth something. We work with genuine Unilock replacement units when matching color matters, and we stock the common lines locally so your Fontana project doesn’t stall waiting on a shipment. You can also check our full Unilock sales & service page to see the depth of what we cover.
Common Unilock Construction Problems We Solve in Fontana
- Paver settlement and edge blowouts on westside fill soil. In the 92335 ZIP, homes built for Kaiser Steel workers sit on shallow fill or slag-influenced ground. Without an engineered sub-base, the base compacts and fails within 2 to 5 years. We see garage aprons sunk 4 inches and edges crumbling into the street.
- Efflorescence and color fading on Richcliff and Brussels Block. Fontana summers regularly exceed 105°F, and full-sun front yards bake surface moisture out of the pavers. That accelerates polymer sand degradation and leaves white mineral streaks across your patio. We address this during install with proper jointing and base drainage.
- Retaining wall leaning in 92336 tract-home neighborhoods. Clay soil expands and contracts through wet-dry cycles, slowly rotating Unilock wall units if drainage was omitted. We rebuild these walls with proper geogrid and drainage that exceeds local Title 24 requirements.
- Joint sand washout on patios in the 92337 foothill areas. Santa Ana wind events blast fine sand out of paver joints, leaving units loose within a single season. We re-sand with polymer that holds up better to wind, and we check the edge restraints at the same time.
- Driveway failure at the garage apron on older Kaiser tract homes. The original 1960s Unilock or concrete drives often lack any real base, and the apron takes the brunt of daily traffic. We reset these with a 12-inch AB-3 base and geotextile fabric so they hold.
Unilock Service in Fontana: What Local Conditions Mean for Your Equipment
Here’s the insight most out-of-town contractors miss. Fontana’s westside ZIP 92335 is, as far as we know, the only Inland Empire city where a standard residential paver driveway can unexpectedly hit buried slag and industrial fill from the former Kaiser Steel mill. That’s not true in Rancho Cucamonga or Ontario. We have repeatedly pulled old mill tailings out of front yards along the Miller Street corridor. What does that mean for your Unilock project? If you’re pricing a paver driveway in 92335, you may need a compacted engineered sub-base at roughly 150% of normal cost, because the ground under the topsoil was never residential soil. It’s fill, often with voids, and it compacts unevenly. A contractor who prices the job without checking for that will give you a driveway that sinks in three years. We check. Before we quote anything in Fontana, we probe the soil and look at what’s under the surface. If we find slag, you’ll know it before you spend a dollar, not after your driveway’s already failing.
Last fall our crew did a full paver driveway replacement on Juniper Avenue in the 92335 Kaiser tract. A 1962 Brussels Block front drive had sunk 4 inches at the garage apron. We pulled the old pavers and found a 6-inch layer of black slag mixed with clay. The original base was never engineered for that soil. We removed 2.5 tons of slag, put down a 12-inch AB-3 base with geotextile fabric, and reset a full Beacon Hill Flagstone driveway that now drains clean to the street. That’s the kind of thing you only learn by doing the work in Fontana, not by reading a spec sheet.
Unilock Models & Products We Service in Fontana
We install and repair the full Unilock lineup you’re likely to find in Fontana yards: Beacon Hill Flagstone for driveways and patios that need a natural stone look, Bristol Valley for larger-format projects, Brussels Block for the classic tumbled-paver driveways common in the older 92335 tract, and Richcliff for a more contemporary finish. When a small patch needs matching color, we use genuine Unilock replacement units, because aftermarket copies never quite match after a year of Inland Empire sun. For full resets, though, we’ll usually recommend a complete tear-out and new base rather than trying to match faded original pavers. For structural work behind retaining walls, we use non-branded geogrid and drainage components that exceed what Title 24 requires, because the brand of geogrid matters less than whether it’s installed right.
Unilock Service Pricing in Fontana
Here’s what Unilock work costs in Fontana, based on the jobs we’ve done across 92334, 92335, 92336, and 92337:
| Service | Price Range |
|---|---|
| Paver Driveway Installation | $7,000 - $18,000 |
| Paver Patio Installation | $3,500 - $11,000 |
| Driveway Replacement | $5,000 - $14,000 |
Your final number depends on the square footage, whether we hit slag or clay that needs an engineered base, and whether you’re doing a small patio or a full driveway. Every quote we give in Fontana includes a written line-item scope. No allowances get spent without a written change order first. Call (877) 610-1318 for a free estimate at your Fontana home, and we’ll tell you exactly what’s under the surface before we quote the work. We also offer Kitchen Remodeling in Fontana.
Serving Fontana, CA - Our Local Coverage Area
We’re based in the Fontana 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 Fontana
In 92335, much of the residential ground sits on fill and slag from the old Kaiser Steel mill. That industrial soil compacts unevenly, so a standard paver base fails within a few years. Bathroom Remodeling in Fontana aside, Rancho Cucamonga and Ontario don’t share that same industrial history, so their soils behave more predictably. Call (877) 610-1318 to have us check what’s under your yard before you spend on a driveway.
For small patches under about 100 square feet, yes. We use genuine Unilock replacement units in the closest matching color. For larger areas, we’ll usually recommend a full reset, because the original pavers have faded in the Fontana sun and no new unit will truly match the old ones. The exact cost depends on the size. Call (877) 610-1318 and we’ll give you a written quote.
It’s less about heat and more about soil. Fontana’s inland climate means rapid moisture cycling, but the bigger issue is what’s under the pavers. On the west side, industrial fill requires a deeper engineered base than coastal cities would use. On the east side, clay expansion and contraction means drainage and base compaction need extra attention. We price each Fontana job based on the soil we actually find, not a generic formula.
Santa Ana events blow fine sand out of paver joints, especially in foothill areas like 92337. Once the sand’s gone, the pavers shift and loosen within a season. We re-sand with polymer that holds up better to wind, and we check edge restraints at the same time so the patio doesn’t start moving outward. Call (877) 610-1318 for a free estimate on re-sanding or resetting your patio.
Most full driveway replacements in the 92335 Kaiser tract land between $7,000 and $18,000, depending on square footage and what we find underneath. If we hit slag, expect to add for the engineered sub-base. Call (877) 610-1318 and we’ll probe the soil before quoting, so there are no surprises later.
Service Areas Near Fontana
We serve the full Fontana service area, including 92334, 92335, 92336, and 92337. If you’re a little further out, we also cover Unilock service in Moreno Valley and Unilock service in Huntington Beach. Our crews know the Inland Empire and the coastal edge well enough to know which soil problems show up where.
Book Your Unilock Service in Fontana Today
If your Unilock driveway or patio is showing cracks, sinking, or loose pavers, call us at (877) 610-1318. We’ll come out to your Fontana home, check what’s underneath, and give you a written estimate before any work starts. We’ll do it right the first time, or we’ll come back and make it right.
Written by Tom Barrett, Owner at Barrett & Sons Construction, serving Fontana since 1998.







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