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Rip Rap SLP Rock is an angular, heavy-duty stone designed for slope protection, erosion control, and drainage applications. Available in 3–24"+ sizes, this durable material stabilizes embankments, shorelines, and culverts. North Bay Materials delivers Rip Rap across Marin, Napa, Sonoma, and Solano counties with fast local dump-truck service.

Permeable base rock and regular base rock serve very different purposes. Contractors, engineers, and architects need to know which to specify for strength, drainage, and compliance. This article breaks down Caltrans standards, structural performance, and practical applications to help you choose the right base material for projects across Marin, Napa, Sonoma, and Solano counties.

Discover why drain rock is one of the most versatile materials for landscaping and construction across Marin, Napa, Sonoma, and Solano. From French drains and driveways to erosion control and decorative creek beds, North Bay Materials delivers the right size rock straight to your project site.

Learn what Class 2 base rock is and how to use it in driveways, roads, and patios. Now delivering ¾″ road base by the yard in Napa, Vallejo, Benicia, and surrounding cities.

Confused about how many cubic yards are in a ton? This guide simplifies conversions for gravel, mulch, and soil—so you can order the right amount for your North Bay project.

Planning a landscaping project in Sonoma, Marin, Napa, or Solano? Learn how to accurately measure your outdoor space to calculate the right amount of materials like gravel, mulch, and topsoil. Our step-by-step guide helps homeowners and contractors avoid over- or under-ordering with simple tools and formulas.

Discover how North Bay Materials makes bulk landscape material delivery fast, easy, and local for homeowners and contractors in Marin, Sonoma, Napa, and Solano. From gravel and mulch to sand and soil—we deliver what your outdoor project needs.