Flagstone Walkway Thickness and Sourcing for a 200-sq-ft Path

A DIYer plans a 50×4-ft front-yard flagstone path (≈200 sf) and needs thickness guidance and bulk sources.

Thickness: 2–3 Inches Is the Sweet Spot

• 1–1.5″: Too thin—cracks under foot traffic, especially on sand base.
• 2–3″: Ideal. Rigid enough for pedestrian loads, manageable weight (15–25 lbs/sf), stable on sand or mortar.
• 3–4″: Overkill for a walkway—heavy, hard to cut, expensive.

Where to Buy in Bulk

• Stone yards / landscape suppliers (not big-box): Sell by the ton or pallet. Search "flagstone supplier + [your city]."
• Quarries direct if within 50 mi — best price, but may require full pallets.
• Masonry supply houses — often carry bluestone, sandstone, limestone flagging.

Quantity Estimate

200 sf × 2.5″ avg = ~15 tons (assuming 1.5 tons/100 sf at 2″). Order 10–15% extra for breakage and fitting. Ask for "select" or "patio grade" — more uniform thickness, less sorting.

Base Prep (Critical)

• 4–6″ compacted ¾″ crusher run.
• 1″ concrete sand (screeded).
• Lay stones, level with rubber mallet.
• Sweep polymeric sand into joints.

2–3″ flagstone from a local stone yard, proper base, and polymeric sand = a walkway that lasts decades.