Selected rock
Crushed Stone
Angular broken stone for drainage, bases, pads, and general aggregate.
Sharp angular edges with gray stone faces. Planning density: 100 lb/ft3.Frequently Asked Questions
How much gravel do I need for a patio?
For a 12 x 16 ft patio at 4 in depth, you need about 2.37 cubic yards or 3.2 US tons. Enter your exact dimensions in the calculator above.
What type of gravel is best under a patio?
Crushed stone, road base, or crusher run compacts to a firm, stable base under pavers, concrete, or flagstone. Avoid round gravel where load support is needed.
How deep should gravel be under a patio?
4 inches of compacted gravel sub-base is standard. In cold climates or areas with poor drainage, use 6 inches to reduce frost and drainage problems.
Do I need gravel under my patio?
Yes. A gravel base provides drainage, reduces settling, and acts as a frost buffer. Patios without proper drainage can heave, crack, and shift over time.
How do I calculate gravel for a patio?
Length x width x depth, all in feet, divided by 27 = cubic yards. For a 10 x 12 ft patio at 4 in: 10 x 12 x 0.333 divided by 27 = 1.48 cubic yards.