The hexagon cells that make up each COREgravel panel form a rigid honeycomb design that holds gravel in place and supports load distribution. The underside is a geotextile allowing water to drain easily and prevents weed growth. Interlocking system edges support assembly.
Drainage Do's and Don'ts - waterproofmag.com More
drainage control - could be a good solution for drainage along the patio, walkway, foundation
Water draining around a house or building can cause MAJOR problems. Drainage fixes can stop that damage from occurring in the future.
Drainage Solution: How to Install a Dry | ehowdiy.com