Flagstone is sold by the ton, and thickness decides how far a ton goes. Enter your patio and stone thickness to see the tons to order.
How it works
Coverage per ton is 2,000 lb ÷ (thickness in feet × 150 lb per cu ft). Area plus your cut allowance ÷ coverage gives tons, rounded up to the quarter ton.
Before you order
- Sort stones by size before you start and lay the biggest pieces first.
- Thin stone needs a sand bed or a concrete slab, because it cracks over voids.
- Order from one quarry run so the color stays consistent across the patio.
Common questions
How much does a ton of flagstone cover?
About 160 sq ft at 1 inch thick, 107 sq ft at 1.5 inches and 80 sq ft at 2 inches.
How thick should flagstone be for a patio?
About 1.5 to 2 inches on sand or gravel. Thinner stone is better laid on concrete.