All ground cover products (mulch, decorative gravel, lava rock) are sold by quantity not weight, 1 cubic yard (one leveled scoop on loader) will cover an area of 81 square feet or 8′ x 10’x 4″deep. Topsoil, base rock, clay fill materials when compacted will lose approximately 17% volume. This should be considered when calculating amounts needed.
Weight=1 Ton+/- 2″ thick will cover approximately 110 square feet of area for patios, walkways etc. Dry stack walls or borders 18′ to 20′ linear feet 1’high x 1′ wide.
Please feel free to contact us with any questions on calculating the amount of material needed for your next project