How Much Limestone Screenings for 400 Square Feet?
How much limestone screenings for 400 square feet depends on depth. At 2 inches you need about 2.47 cubic yards, roughly 3.5 tons at 1.4 tons per yard. Going to 3 inches raises it to 5.2 tons.
Volume and tonnage calculator →Limestone screenings for 400 sq ft by depth
| Depth | Cubic yards | Tons | Tons +10% |
|---|---|---|---|
| 1 in | 1.23 | 1.7 | 1.9 |
| 2 in | 2.47 | 3.5 | 3.8 |
| 3 in | 3.70 | 5.2 | 5.7 |
Working it out
- 400 sq ft × (2 ÷ 12) ft = 66.7 cubic feet.
- ÷ 27 = 2.47 cubic yards.
- × 1.4 tons per yard = 3.5 tons.
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. Most suppliers will quote 1.3 to 1.5 tons per yard for this material.
Getting the order right
- Measure odd shapes in pieces. Split curves and L-shapes into rectangles and add them.
- Add a margin. About 10 percent covers compaction and low spots.
- Bulk or bags. Bulk delivery is the practical choice here.
- Prep first. Remove sod, compact the subgrade and set edging before the stone arrives.
Use the volume and tonnage calculator for any other size.
Where limestone screenings fits
Good uses:
- 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 8x16 area at 4 inches takes about 2.2 tons.
- Weight used here: about 1.4 tons per cubic yard.
Common estimating mistakes
- Using inches as if they were feet. Depth has to be divided by 12 before you multiply; skipping that step inflates the order twelvefold.
- Assuming every supplier uses the same weight. Two yards selling the same product name can quote different tons per yard.
- Measuring only the main rectangle. Aprons, turnouts and curved edges add real square footage.
- 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 400 square feet?
About 3.5 tons at 2 inches deep.
How many cubic yards of limestone screenings for 400 square feet?
About 2.47 yards at 2 inches.
How much limestone screenings for 400 square feet at 1 inches?
About 1.7 tons, or 1.23 cubic yards.
How much does a yard of limestone screenings weigh?
About 1.3 to 1.5 tons.
Should I add extra?
Yes, about 10 percent is a common allowance.
Related guides
- #10 Stone (Stone Dust): Size, Uses and How Many Tons
- Tons to Cubic Yards for Gravel: Conversion Chart
- How Much Does a Ton of Gravel Cover? Depth Chart
- How Much Limestone Screenings for 250 Square Feet?
- How Much Limestone Screenings for 300 Square Feet?
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