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Unilock Construction in Mountain View, CA | Silver Line Contractors
We install, repair, and rebuild Unilock paver driveways, patios, and retaining walls across Mountain View as an independent Mountain View General Contractor. We’re not manufacturer-affiliated or “authorized,” which matters more than you might think: our crews bring their own engineering judgment to base prep, grading, and drainage instead of following a manufacturer script. If your Brussels Block driveway in Waverly Park has started rocking at the joints after two rainy seasons, call (833) 400-1314 for a free estimate.
We’ve torn out and rebuilt enough failed paver installations around Mountain View to know exactly where this product line goes wrong in clay-heavy valley soil. Unilock sales & service is one of our hardscape specialties, and our familiarity spans Brussels Block, Brussels Dimensional, Yorkville, and the U-Cara retaining wall system. We also bring full general-contracting scope to the job, from the roof down to the driveway.
Why Mountain View Residents Choose Us for Unilock Service
Mountain View’s housing stock leans heavily on 1950s and 60s single-story tract homes, many Eichler-style with post-and-beam construction and radiant slab heating. Those homes came with narrow, often slab-on-grade concrete driveways. Over the decades, homeowners have topped those old slabs with pavers, and we’ve seen the results when that topping was laid thin over an under-compacted base. Our crews understand what’s under the pavers as well as the pavers themselves.
Noel Carvalho, our owner and general contractor, grew up in Gilroy’s south end watching his father patch and improve their family home every weekend. He studied construction technology at Gavilan College, then spent the better part of his twenties and thirties working every phase of residential builds across Santa Clara County. That background shapes how we approach Unilock work in Mountain View: the block is only as good as what’s underneath it.
Written by Noel Carvalho, Owner & General Contractor at Silver Line Contractors, serving Mountain View and the South Bay.
Styles & brands we work with
Common Unilock Construction Problems We Solve in Mountain View
Here’s what we see most often when we’re called out to our Home Remodeling in Mountain View and Unilock installations across the city:
- Rocking and settled Brussels Block pavers on sloped driveways. When the aggregate base was under-compacted or too shallow, pavers settle and rock at the joints. This shows up fastest on sloped driveways, where water accelerates rutting. In Cuesta Park, where driveways climb modest slopes from the street, this is a repeat call for us.
- Efflorescence blooms after the wet season. Mountain View’s rainy season runs roughly November through March. Gray Brussels Block pavers that sit shaded against a house wall hold moisture through the day, and the salts in the concrete bloom up as a white chalky residue. It’s cosmetic, but it worries homeowners every spring.
- Leaning or bowed U-Cara retaining walls. When a U-Cara wall is installed without proper geogrid reinforcement and drainage weep holes, heavy rain saturates the soil behind it and the wall leans. On Mountain View hillside lots, where even a few feet of grade change holds back saturated clay, this is a structural concern, not a cosmetic one.
- Shifting pavers with no edge restraint. Unit pavers laid tight against a curbed edge with no physical restraint shift outward under car loads. Narrow Eichler driveways concentrate tire pressure, and the outer row of pavers takes the brunt.
- Heaved bases after the first November rains. Mountain View’s dry-season clay shrinks in summer and swells hard after the first soaking rains. A paver base that reads perfectly flat in September can be visibly uneven by January if it wasn’t excavated deep enough and fully compacted.
Unilock Service in Mountain View: What Local Conditions Mean for Your Equipment
Here’s the thing no generic Unilock page tells you. Mountain View’s native soil is shrink-swell clay. During the dry season, from June through October, that clay contracts steadily and develops micro-fissures. When the first November rains arrive, the clay absorbs water and expands, sometimes dramatically. For a paver driveway or patio, that means a base that read flat and level in September can heave, dip, and settle by January unless it was excavated deep, lined with geotextile fabric, and compacted in lifts. We’ve seen this play out in Waverly Park, Unilock repair in Loyola, and Cuesta Park driveways repeatedly. It’s not the paver that fails. It’s the base. And the base only holds if it’s built for Mountain View clay, not for a generic spec sheet. That’s why we over-excavate by several inches beyond the typical recommendation on every Unilock project in the 94040 and 94041 zip codes. The clay doesn’t care what the brochure says.
Good construction doesn’t need a sales pitch – the work explains itself.
Unilock Models & Products We Service in Mountain View
We service the full Unilock residential hardscape line, with the most field time on the four products Mountain View homeowners actually install:
- Brussels Block – the workhorse paver for driveways and patios. We know its joint geometry, its tolerance for vehicle loads, and how it behaves on sloped surfaces.
- Brussels Dimensional – the larger-format cousin, often chosen for patios where homeowners want fewer, bolder lines.
- Yorkville – a tumbled, timeworn aesthetic that’s common on Mountain View patios and pool decks.
- U-Cara – the retaining wall system. We approach every U-Cara wall with an engineer’s eye for drainage, batter, and reinforcement.
On parts and materials, here’s our stance. We use genuine Unilock units and matching edge restraint to keep the system dimensionally consistent. Base aggregate, geotextile fabric, and polymeric joint sand come from quality suppliers who meet or exceed spec; the brand of the block is less consequential than what’s under it. We’ll repair a localized joint or slumped wall section. A failed base means full tear-out and rebuild. Patching over a bad base is a repeat call waiting to happen.
See the difference
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AfterUnilock Service Pricing in Mountain View
What drives cost in Mountain View is almost always the base work. Excavation depth, geotextile, aggregate, compaction time, and disposal of the old concrete or failed base all carry labor and material costs. The paver itself is typically a fixed line item. Here are our current ranges for the three Unilock services Mountain View homeowners ask about most:
| Service | Price Range |
|---|---|
| Paver Driveway Installation | $7,000 – $18,000 |
| Paver Patio Installation | $3,500 – $11,000 |
| Driveway Replacement | $5,000 – $14,000 |
Every estimate we give in Mountain View is a written, line-item quote. We walk the site, check the existing grade and drainage, and tell you what the base actually needs. No change orders that show up after the jackhammer starts. Call (833) 400-1314 to schedule yours.
Serving Mountain View, CA — Our Local Coverage Area
We’re based in the Mountain View 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 Mountain View
Overlaying pavers on an existing concrete slab is possible, but only if the slab is structurally sound, has no active cracking or settlement, and provides positive drainage away from the house. Many Eichler driveways in Mountain View are 50 to 60 years old and have deteriorated far enough that overlaying simply transfers the failure to the paver layer. We’ll evaluate the slab and tell you honestly whether it’s a candidate for overlay or a full tear-out. Call (833) 400-1314 for a free assessment.
For vehicular applications on Mountain View’s shrink-swell clay, we excavate at least 10 to 12 inches below finished grade, then build up with geotextile fabric, 6 to 8 inches of compacted aggregate base, and a 1-inch bedding layer. That’s deeper than the generic recommendation, and it’s deliberate. Mountain View clay moves more than most people realize between September and January. For patios with pedestrian traffic only, we can sometimes go slightly shallower, but we never drop below 8 inches total. Call (833) 400-1314 and we’ll assess your specific lot.
Yes, a properly built U-Cara wall can handle a Mountain View hillside. The wall itself is only part of the system. You need adequate geogrid reinforcement, drainage gravel and weep holes, and a foundation course set below grade. When any of those elements is skipped, the wall leans after a wet winter. We design U-Cara walls for the saturated soil weight they’ll actually carry, not the dry-season weight. Call (833) 400-1314 for a wall evaluation.
In Mountain View, paver patios at grade generally don’t require a building permit, but retaining walls over 3 feet in height typically do, and the city enforces design-review rules on many properties. Any wall that retains soil adjacent to a property line or right-of-way may also trigger a setback or engineering requirement. We pull permits when they’re required and coordinate with the city directly. Call (833) 400-1314 and we’ll tell you what applies to your property.
A typical driveway replacement takes three to five working days, including excavation, base installation, paver setting, joint sand, and compaction. A patio of 300 to 500 square feet typically takes two to three days. Rain can add a day or two between November and March. We schedule Unilock in Sunnyvale and Mountain View year-round, but exterior phases move slower if the weather doesn’t cooperate. Call (833) 400-1314 for a schedule based on your specific scope.
Service Areas Near Mountain View
Silver Line Contractors serves Mountain View and the surrounding South Bay communities, including Mountain View service area coverage across 94035, 94039, 94040, and 94041. We also serve homeowners in Los Altos, Los Altos Hills, Sunnyvale, Cupertino, and Palo Alto. For Unilock work in neighboring communities, see our Unilock service in Los Altos and Unilock service in Los Altos Hills pages.
Book Your Unilock Service in Mountain View Today
If your Unilock pavers are rocking, your U-Cara wall is leaning, or you’re planning a new driveway or patio in Mountain View, call (833) 400-1314 for a free, written estimate. We’ll walk the site, tell you what the base actually needs, and give you a line-item quote you can plan around.
Written by Noel Carvalho, Owner & General Contractor at Silver Line Contractors, serving Mountain View and the South Bay.