Paver base is a foundational layer used when laying pavers for patios, walkways, and other outdoor hardscapes. This paver base contains crushed rock of various sizes and has gravel dust and sand added. For residential driveways, a minimum thickness of 6-in deep will provide 1 sq ft of coverage. For residential walkways and patios, a minimum thickness of 4-in will provide approximately 1.5 sq ft of coverage.  Product will not wash away, and each bag weighs approximately 50 lbs.