How Much Limestone Screenings for a 14x18 Patio?
A 14 by 18 foot patio is 252 square feet. How much limestone screenings for a 14x18 patio depends on depth: at 3 inches it is about 2.33 cubic yards or 3.3 tons. Suppliers usually sell by the ton, so the tonnage is the number to give them.
Volume and tonnage calculator →The math for a 14x18 patio
- Area: 14 × 18 = 252 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic feet: 252 × 0.250 = 63.0 cu ft.
- Cubic yards: ÷ 27 = 2.33 yd³.
- Tons: × 1.4 = 3.3 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 | 0.78 | 1.1 | 1.2 |
| 2 in | 1.56 | 2.2 | 2.4 |
| 3 in | 2.33 | 3.3 | 3.6 |
About limestone screenings
Screenings hold moisture and can crust over. Use them in thin layers over a compacted stone base instead of as a thick layer on their own. Weight per yard is a planning number; the scale ticket at the yard is the real one.
Preparing the patio
Remove sod, level the area with a slight slope away from the house, and lay landscape fabric if weeds are a concern. Edging keeps loose material inside the patio footprint. For foot traffic and furniture, 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. 3.6 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 this size bulk delivery is usually the practical choice.
- Where it drops. Have the truck dump as close to the patio as firm ground allows.
When to choose limestone screenings
Best suited to:
- Paver and flagstone setting beds
- Firm walking paths
- Top-dressing a compacted stone base
Think twice 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 12x24 area at 4 inches takes about 5.0 tons.
- Weight used here: about 1.4 tons per cubic yard.
Common estimating mistakes
- 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 14x18 patio?
About 3.3 tons at 3 inches deep, or 3.6 tons with 10 percent extra.
How many cubic yards is a 14x18 patio at 3 inches?
About 2.33 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 patio?
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 14x18?
252 square feet.
Related guides
- #10 Stone (Stone Dust): Size, Uses and How Many Tons
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Many Tons of Gravel in a Dump Truck? Loads and Coverage
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much Limestone Screenings for a 14x14 Patio?
- How Much Limestone Screenings for a 14x16 Patio?
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