How Much Limestone Screenings for a 4x25 Walkway?

A 4 by 25 foot walkway is 100 square feet. How much limestone screenings for a 4x25 walkway depends on depth: at 3 inches it is about 0.93 cubic yards or 1.3 tons. Suppliers usually sell by the ton, so the tonnage is the number to give them.

Volume and tonnage calculator →

The math for a 4x25 walkway

Area: 4 × 25 = 100 sq ft.
Depth in feet: 3 ÷ 12 = 0.250 ft.
Cubic feet: 100 × 0.250 = 25.0 cu ft.
Cubic yards: ÷ 27 = 0.93 yd³.
Tons: × 1.4 = 1.3 tons.

The volume and tonnage calculator does this for any size.

Limestone screenings needed by depth

Depth	Cubic yards	Tons (approx.)	Tons +10%
1 in	0.31	0.4	0.5
2 in	0.62	0.9	1.0
3 in	0.93	1.3	1.4

About limestone screenings

Limestone screenings are the fine dust and chips left after crushing limestone. They pack very tight, which makes them a common setting bed for pavers and flagstone and a surface for paths. If the yard sells by the cubic yard instead of the ton, use the cubic-yard column directly.

Preparing the walkway

Dig the path a few inches below grade, compact the bottom, add fabric if needed and install edging on both sides so the material stays on the walk. For foot traffic, the depths in the table above are a reasonable starting range.

Ordering tips

Round up. Compaction and uneven ground eat material. Adding about 10 percent is common.
Delivery size. 1.4 tons fits in a single typical dump truck load; small loads may carry a delivery fee. See how many tons of gravel in a dump truck.
Bulk vs bags. At about 1.3 tons this job is small enough that bagged material could work; a 0.5 cubic foot bag holds about 1/54 of a yard, so compare the bag count with a bulk minimum.
Where it drops. Have the truck dump as close to the walkway as firm ground allows.

Good and poor uses for limestone screenings

Good uses:

Paver and flagstone setting beds
Firm walking paths
Top-dressing a compacted stone base

Poor fit for:

Deep layers on their own
Low spots that collect water
Under heavy vehicle traffic without a base

Quick reference numbers

Per inch over 100 sq ft: about 0.43 tons of limestone screenings (0.31 cubic yards).
Per inch over 1,000 sq ft: about 4.3 tons.
Another size for comparison: a 20x25 area at 2 inches takes about 4.3 tons.
Weight used here: about 1.4 tons per cubic yard.

Where estimates go wrong

Mixing up cubic yards and tons. Yards are volume, tons are weight; convert with the product’s weight per yard.
Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
Ignoring the base. A thin surface layer over soft soil fails early no matter how much material is on top.
Forgetting that compaction shrinks loose material. A loose 4-inch spread of a dense-graded stone may finish closer to 3 inches after rolling.

Questions people ask

How many tons of limestone screenings for a 4x25 walkway?

About 1.3 tons at 3 inches deep, or 1.4 tons with 10 percent extra.

How many cubic yards is a 4x25 walkway at 3 inches?

About 0.93 cubic yards.

How much does a cubic yard of limestone screenings weigh?

Usually around 1.3 to 1.5 tons, depending on stone size, fines and moisture.

How deep should limestone screenings be for a walkway?

The table above shows 1 to 3 inches. Shallower depths suit top dressing; deeper depths suit new installs and heavier use.

How many square feet is 4x25?

100 square feet.

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