CGI Driveway & Pavers Nationwide

CGI Driveway & Pavers: The Rancho Cucamonga Owner’s Guide

We stock and install CGI-compatible driveway and paver components in Rancho Cucamonga, with most replacements running $5,000-$14,000 for a full driveway replacement and paver repairs starting around $400. Most CGI paver issues we see in Rancho Cucamonga are discovered after the first heavy rain of the season, when water pooling or joint sand washout exposes settling that happened months earlier. The combination of our freeze-thaw-light cycle and the clay-heavy soils near the foothills accelerates substrate movement under CGI installations that were originally laid without adequate edge restraint or proper base compaction.

Call (909) 373-9612

Which CGI Models This Applies To

CGI, or Concrete Grid Interlocking pavers, refers to a structural system rather than a single brand line. In Rancho Cucamonga, we most commonly service CGI installations from the Belgard Mega-Arbel and Cambridge ArmorTec series, though the term also covers generic grid-interlock systems sold through landscape supply yards across San Bernardino County. The critical identifier is the grid pattern stamped into the paver surface and the corresponding edge-lock channel on the underside, which differs from standard Holland or cobble profiles.

To confirm your CGI type, check the paver edge for a manufacturer stamp (Belgard marks theirs near the locking lug; Cambridge stamps the underside) or measure the grid cell spacing. Standard CGI runs 3⅛-inch or 4-inch cell spacing. The OEM edge restraint for Belgard CGI is a PVC snap-in profile; generic equivalents exist but we’ve found the tolerances vary by up to 3/16-inch, which is enough to create joint failure under load within two seasons. We stock both OEM and vetted aftermarket edge restraints on our Rancho Cucamonga trucks, and we’ll match the spec to your existing grid before quoting.

Signs Your CGI Driveway & Pavers Is Failing

• Joint sand washout after light rain. This usually means the polymeric sand bed has degraded or was never properly activated with water during original installation. Once the sand goes, the interlock pressure that keeps CGI pavers from shifting under vehicle load disappears.
• Individual pavers rocking under foot or tire. The base layer, typically Class II road base in Rancho Cucamonga installations, has settled or eroded beneath that specific cell. Clay soil expansion during our wet winters, followed by summer contraction, creates voids that let pavers drop.
• Edge restraint pulling away from the perimeter. Plastic or aluminum edge restraints fail when spikes work loose in our expansive soils. CGI systems depend on perimeter tension more than standard pavers do; once the edge goes, the field spreads.
• Surface staining that won’t pressure-wash off. Iron-rich groundwater in parts of Rancho Cucamonga, especially near the 210 corridor, oxidizes in the paver pores. This isn’t structural failure yet, but it indicates moisture is penetrating rather than shedding, which precedes freeze-thaw spalling.
• Visible grid pattern cracking or corner chipping. CGI pavers carry load through the grid ribs; when those crack, usually from point loading or subbase failure, the paver loses structural integrity and will deteriorate rapidly under continued traffic.

Before

After

Replacement Cost & What’s Included

For Rancho Cucamonga properties, here’s how CGI driveway and paver work breaks down:

The spread in driveway replacement comes down to three factors: square footage, whether we can reuse your existing CGI pavers (saves 30-40% on material), and what we find when we lift the first course. Rancho Cucamonga’s clay soils often require deeper excavation and geotextile stabilization than the original spec called for. Under Clause 1 of The Haven Standard, we put that revised scope in writing before any additional work proceeds. Every CGI job carries our 365-Day Done Right Promise and a documented photo record of base conditions, compaction tests, and finished grade.

DIY or Call Us?

There’s no high-tension danger in paver work, but there is a point where DIY becomes expensive do-over. A homeowner can safely check for loose edge restraint or sweep fresh polymeric sand into open joints. What we see go wrong: lifting pavers without marking the pattern, then discovering the grid orientation matters for load transfer; or recompacting with a hand tamper when a plate compactor with proper lift thickness is what the base spec requires. Rancho Cucamonga’s clay soils need moisture conditioning before compaction, and getting that wrong means the repair sinks within a year.

We offer a free second opinion on any written estimate you’ve already received. Call (909) 373-9612 to schedule your free estimate, and we’ll show you exactly what the base looks like under your CGI system before you commit to a scope.

FAQs