A border 120 feet long and 3 feet wide takes about 4 cubic yards of decorative stone at a 3-inch depth. The strip math: 120 ft x 3 ft = 360 sq ft, then 360 x 3 ÷ 324 = 3.3 cubic yards — order 4 to keep a buffer for corners and curves. Measure the full run around the foundation, multiply by the strip width, and use the same formula.
Border strips at 3 inches deep
| 100 ft x 3 ft | 300 sq ft | ~3 cubic yards |
| 120 ft x 3 ft | 360 sq ft | ~4 cubic yards |
| 150 ft x 3 ft | 450 sq ft | ~4.5 cubic yards |
| 200 ft x 3 ft | 600 sq ft | ~6 cubic yards |
Run your own numbers in the material calculator, then pick a stone from the decorative stone collection.
