Cambridge Pavers Home Additions & ADU Nationwide

Cambridge Pavers Home Additions & ADU: The Redwood City Owner’s Guide

Cambridge Pavers home additions and ADU projects in Redwood City typically run $45,000-$130,000 for standard additions and $90,000-$220,000 for detached ADUs, with paver patio and walkway integration adding $3,500-$11,000 to the base structure. We stock Cambridge Pavers-compatible materials for same-week installation on most standard patterns and colors. Most Redwood City owners discover their Cambridge Pavers surface needs attention when settling cracks appear near the foundation tie-in, or when drainage pooling forms where the new addition meets the original hardscape.

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Which Cambridge Pavers Models This Applies To

Cambridge Pavers produces several product lines that integrate with home additions and ADUs in Redwood City, and identifying the correct series matters for structural load compatibility. The ArmorTec and Cast Stone lines are the most common in Peninsula installations from 2015 onward, identifiable by the stamped series code on the paver edge and the 2-3/8 inch thickness standard for vehicular-rated surfaces. Older installations may use the Renaissance or Classic Cobble lines at 2-1/4 inch thickness, which require different base prep when extended into a new addition footprint.

We source OEM Cambridge Pavers through authorized distributors in San Jose and Hayward, though for certain discontinued colors we match with Belgard or Techo-Bloc equivalents that carry equivalent compressive strength ratings, 8,500 PSI minimum. The compatibility gotcha in Redwood City specifically: Cambridge’s Sherwood and Ledgestone textures use a proprietary spacer lug pattern that doesn’t interlock cleanly with generic alternatives, so we verify lug geometry before quoting a patch or extension. Measure twice, document once, build it so it doesn’t come back.

Signs Your Cambridge Pavers Home Additions & ADU Is Failing

• Sinking or settling at the addition junction. The base course beneath Cambridge Pavers was likely compacted to 95% standard Proctor density, but differential settlement between old and new construction creates a visible lip. In Redwood City’s clay-heavy soils near the Stambaugh-Heller neighborhood, we’ve seen this within 18 months when the geotextile fabric was omitted or the base rock was washed round stone rather than angular crush.
• Efflorescence whitening that won’t rinse off. Calcium hydroxide migration from the concrete bedding layer indicates moisture trapped beneath the paver surface, often from a missing or breached vapor barrier where the addition slab meets the paver field.
• Chipping along the spacer lugs. Cambridge’s ArmorTec surface is a hardened wear layer roughly 3/16 inch deep; lug chipping exposes the softer aggregate core and accelerates freeze-thaw degradation, even in Redwood City’s mild climate where thermal cycling still hits 40-degree swings in a single winter day.
• Weed growth through joints that were previously stable. Polymeric sand failure between Cambridge Pavers signals either improper activation during install or base erosion creating voids beneath the bedding layer.
• Standing water 24 hours after rain. Cambridge Pavers are permeable at the joint, not the surface; persistent pooling means the gradation slope was lost to settlement or the original installer missed the 1/8 inch per foot minimum away from the addition foundation.

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Replacement Cost & What’s Included

The spread on addition and ADU pricing reflects foundation type, utility trenching distance, and whether the Cambridge Pavers surface is new install or salvage-and-relay. Under Clause 1 of the Haven Standard, your written price arrives before any work starts and includes the full scope: demo, base prep and compaction testing, paver installation with proper edge restraint, and joint stabilization. No change proceeds without a signed change order. Our 365-Day Done Right Promise covers both the structure and the hardscape integration.

DIY or Call Us?

A homeowner can safely check paver surface drainage with a level and garden hose, and photograph efflorescence patterns for documentation. What goes wrong fast: attempting to lift and regrade settled Cambridge Pavers without knowing whether buried utilities run beneath the addition footprint, or compacting base rock without a plate compactor rated for the 6-inch lifts specified by ICPI guidelines. Redwood City requires permits for any addition over 120 square feet, and the joint inspection includes hardscape tie-in review.

We carry Cambridge Pavers sample boards and moisture meters on every truck. Call (650) 560-7228 to schedule your free estimate with a written line-item scope.

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