CWS Driveway & Pavers Nationwide

CWS Driveway & Pavers: The Sunnyvale Owner’s Guide

We stock and install CWS-compatible driveway and paver components in Sunnyvale, with most replacement jobs running $5,000-$14,000 for driveway replacement and paver driveway installations at $7,000-$18,000 depending on substrate condition and square footage. Most CWS paver edge restraints, joint sand stabilizers, and base-course drainage components are available same-day through our local supply chain. Sunnyvale homeowners usually discover a CWS paver system is failing when edge stones start migrating after winter rains, polymeric sand washes out from between joints, or settlement cracks appear where the 3/4-inch minus base course has degraded beneath the surface.

Call (650) 405-3637

Which CWS Models This Applies To

CWS produces driveway and paver systems across several product lines, and matching the right component matters more than brand loyalty. The CWS Perma-Edge restraint system, common in Sunnyvale installations from 2012-2019, uses a 6-inch aluminum stake spacing that differs from the 8-inch spacing on the newer Pro-Edge HD line. Check the stamped model number on the exposed face of the edge restraint, or measure stake spacing if the strip is partially buried. The CWS Enviro-Bond polymeric sand series has three gradations: 0-1mm for tight joints under 1/8 inch, 1-3mm for standard paver joints, and 3-5mm for tumbled or rustic profiles. Using the wrong gradation causes premature washout on Sunnyvale’s compacted clay soils.

We source OEM CWS components where the specification demands it, and we stock quality aftermarket equivalents from Belgard and Techo-Bloc where the performance spec matches. The aftermarket edge restraints we carry meet the same 3,000-pound pull-test standard as CWS factory units, at roughly 15% lower material cost. We document the source on every quote so you know what you’re paying for.

Signs Your CWS Driveway & Pavers Is Failing

• Edge stones pulling away from the border. The CWS edge restraint has either corroded at the stake points or the stakes have pulled from saturated soil. In Sunnyvale, this accelerates where irrigation overspray keeps the perimeter damp year-round.
• Polymeric sand washing out between joints. The binder has UV-degraded or the wrong sand gradation was installed originally. Once the sand matrix fails, water penetrates to the bedding course and fluidizes the base.
• Individual pavers rocking underfoot. The 1-inch bedding sand layer has scoured away or the base course has settled. On CWS installations over 10 years old in Sunnyvale, we often find the original base was compacted to 90% standard Proctor rather than the 95% the current spec requires.
• Surface water pooling instead of shedding. The cross-slope has inverted due to base settlement, or the permeable joint material has clogged with fine sediment from adjacent planting beds.
• Efflorescence blooming across paver faces. Calcium hydroxide is migrating from the concrete substrate; it’s cosmetic but signals moisture is moving through the system unchecked, usually because the joint sand seal has failed.

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Replacement Cost & What’s Included

The spread in paver driveway pricing comes down to four factors: square footage, whether we can reuse the existing base course, the paver unit cost (CWS standard concrete units run $3-$5 per square foot, while their porcelain line runs $8-$12), and whether the project requires a permit from the City of Sunnyvale Building Division. Our quote breaks out material, labor, equipment, and disposal separately. Under Clause 1 of the Haven Standard, that written price is fixed; no change order, no extra cost. The 365-Day Done Right Promise covers the installation, and we pull permits and pass inspections as part of the scope, not as add-ons.

DIY or Call Us?

There’s honest work a Sunnyvale homeowner can do without risk: sweep fresh polymeric sand into open joints after wetting down the surface, or reset a single loose paver that hasn’t settled. But once the base course is compromised, DIY repair becomes excavation work, and that’s where costs spiral. We’ve been called to jobs where a homeowner removed 200 square feet of pavers, discovered the base was saturated clay, and had no compaction equipment to rebuild it. The fix cost 40% more than if we’d handled it from the start.

One safety note: CWS driveway systems over 400 square feet may have been installed with integral drainage tied to municipal storm systems. Disturbing those connections without checking the as-built drawings can violate Sunnyvale’s stormwater management code. We carry the documentation tools to verify before we dig. Call (650) 405-3637 and we’ll scope what’s actually failing, then put the repair price in writing.

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