Unilock Driveway & Pavers Nationwide

Unilock Driveway & Pavers: The Sunnyvale Owner’s Guide

We stock and install Unilock-compatible driveway and paver systems in Sunnyvale, with paver driveway installation typically running $7,000-$18,000 and paver patio installation at $3,500-$11,000 depending on substrate condition and pattern complexity. Most Unilock pattern matches and edge restraints are available same-day through our regional supplier network. Sunnyvale homeowners usually discover a failing paver system when settling creates pooling after winter rains, when edge restraints pop during summer heat cycles, or when polymeric sand washes out from between pavers in the sloped lots common near Lakewood Village and the Washington Park area.

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Which Unilock Models This Applies To

Unilock organizes its residential hardscape lines into distinct series with different joint systems, edge profiles, and base specifications. The Beacon Hill Flagstone and Richcliff lines use a proprietary tumbling process that creates irregular edges; matching replacement pavers requires checking the stamped lot code on the paver underside, not just eyeballing color. The U-Cara Multi-Face Wall System and Brussels Block have specific corner and edge units that are not interchangeable across series. We’ve seen homeowners in Sunnyvale order standard Brussels Block units when their driveway used the Brussels Dimensional Stone variant - same color name, different thickness (60mm vs. 80mm), which throws the entire plane off level.

To identify your unit, flip a loose paver or lift one from an inconspicuous edge. You’re looking for the stamped manufacturing date, the series abbreviation (BH for Beacon Hill, BB for Brussels Block, etc.), and the color batch code. For edge restraints, Unilock specifies either aluminum edging with stakes for flexible curves or rigid paver edging for straight runs; mixing these on the same project causes the waviness we often repair in older Sunnyvale installations. We source OEM Unilock units where color matching is critical, and we stock compatible aftermarket edge restraints and polymeric sands on our trucks - the aftermarket equivalents meet the same ASTM C936 spec for concrete pavers, but we disclose the origin on every line of the quote.

Signs Your Unilock Driveway & Pavers Is Failing

• Pooling water after light rain. This indicates base settlement or loss of bedding sand beneath the paver plane. In Sunnyvale’s clay-heavy soils, especially in the older neighborhoods off El Camino Real, seasonal expansion and contraction gradually create low spots that channel water instead of shedding it.
• Pavers rocking underfoot or sounding hollow when tapped. The bedding sand layer has eroded or migrated, leaving voids. This accelerates rapidly once started; the paver corners chip against the hard base below, and the damage becomes irreversible.
• Edge restraints pulling away from the perimeter. Spikes loosen in saturated soil or the plastic itself fatigues after five to seven years of UV exposure. Once the edge goes, the field pavers migrate outward and the pattern integrity is lost.
• Weeds growing through joints despite previous polymeric sand application. The sand has degraded or washed out, often from pressure washing at too narrow a fan angle or from using plain water instead of the manufacturer’s recommended stabilizing mist.
• Efflorescence that returns after cleaning. White mineral bloom on paver surfaces is normal in new concrete pavers, but persistent efflorescence in an older Sunnyvale installation suggests water is migrating through the base from an irrigation line or downspout termination buried too shallow.

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Replacement Cost & What’s Included

For Unilock paver driveway replacement in Sunnyvale, our installed range is $7,000-$18,000; paver patios run $3,500-$11,000. The spread depends on three factors we itemize in every written quote: square footage, base condition (whether we can reuse the compacted aggregate or must excavate and re-base), and pattern complexity - herringbone and basketweave consume more cuts per linear foot than running bond.

Our quotes separate material, labor, and disposal so you see where each dollar goes. Under Clause 1 of the Haven Standard, that written price is fixed; no work proceeds on any change until the change order is signed. Every paver installation carries our 365-Day Done Right Promise, and you receive a documented photo record of base preparation, compaction passes, and final joint sand application - included, not optional.

DIY or Call Us?

An owner can safely inspect for loose pavers, measure the affected area, and photograph the stamped codes on paver undersides - that information saves us time and saves you money on the diagnostic visit. What DIY typically misses is the base: proper compaction requires a plate compactor rated for the paver thickness, and bedding sand must be screeded to a uniform 1-inch layer. We’ve been called to Sunnyvale jobs where a homeowner added sand to low spots, creating soft pockets that telegraphed through within months. Excavation also risks utility strikes; even shallow irrigation lines in Sunnyvale’s established neighborhoods carry enough pressure to cause real damage.

Measure it twice, write it down, then build it. If the affected area is larger than a few square feet, or if the base is involved, the repair is usually more economical when done correctly the first time. Call (650) 405-3637 to schedule your free estimate.

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