How Much Pea Gravel for a 12x16 Greenhouse Floor?
A 12 by 16 foot greenhouse covers 192 square feet. At 3 inches of pea gravel, plan on 1.78 cubic yards, or about 2.5 tons, which answers how much pea gravel for a 12x16 greenhouse floor.
Volume and tonnage calculator →The math
- Area: 192.0 sq ft.
- Depth in feet: 3 ÷ 12 = 0.250 ft.
- Cubic yards: 192.0 × 0.250 ÷ 27 = 1.78 yd³.
- Tons: × about 1.4 tons per yard = 2.5 tons.
The gravel calculator does this for any size.
Related: How Much Gravel for a 12x16 Greenhouse Floor?
Pea gravel needed by depth
| Depth | Cubic yards | Tons of pea gravel | Tons +10% |
|---|---|---|---|
| 2 in | 1.19 | 1.7 | 1.8 |
| 3 in | 1.78 | 2.5 | 2.7 |
| 4 in | 2.37 | 3.3 | 3.7 |
| 6 in | 3.56 | 5.0 | 5.5 |
Stone for a greenhouse
Greenhouse floors need to drain. A few inches of washed stone over landscape fabric keeps roots and weeds down and dries quickly after watering. Avoid stone with a lot of fines, which can turn muddy.
Related: How Much Crushed Stone for a 12x16 Greenhouse Floor?
Before the stone goes in
Remove sod and roots, level the area and slope it slightly for drainage. Install edging so the stone stays inside the footprint.
Buying the stone
If you haul it yourself, a typical half-ton pickup should carry only about half a cubic yard of stone, well under what the bed looks like it can hold. Pea gravel is small and rounded, comfortable underfoot, and needs edging because it rolls. The scale ticket is the real weight; tons per yard here is a planning figure.
Tools for the job
For anything bigger than a small path, rent a plate compactor; hand tampers cannot match it. A wheelbarrow, shovels, a hard rake and stakes with string are the rest of the kit. Wet the stone lightly before compacting so it binds.
Planning the cost
Stone is usually priced per ton or per cubic yard, and delivery is often a separate charge based on distance. A full truckload can cost less per ton than a partial one, so it can pay to combine projects. Ask whether the quote includes tax, delivery and any small-load fee before you compare yards.
Questions people ask
How many tons of pea gravel for a 12x16 greenhouse floor?
About 2.5 tons at 3 inches deep.
How many yards of pea gravel for a 12x16 greenhouse floor?
About 1.78 cubic yards.
How many tons of pea gravel are in a cubic yard?
Roughly 1.4 tons for planning, but suppliers vary with stone size and moisture.
Should I put landscape fabric under the stone?
On soft or clay soil, a woven geotextile keeps stone from sinking into the dirt and makes the layer last longer.
Related guides
- Gravel for a Greenhouse Floor: Best Stone, Depth and Tons
- How Much Does a Ton of Gravel Cover? Depth Chart
- Tons to Cubic Yards for Gravel: Conversion Chart
- Crushed Stone vs Gravel: Differences and Best Uses
- Geotextile Fabric for Driveways: Woven vs Nonwoven and How Much You Need
- Compacting a Driveway Gravel Base in Lifts
- How Much Crushed Stone for a 12x12 Greenhouse Floor?
- How Much #57 Stone for a 12x12 Greenhouse Floor?
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