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80 Years Serving the Washington Metropolitan Area

Over 80 Years Serving the Washington Metropolitan Area

Gravel next to red brick pathway

Overview

For patios, it is best to use crushed stone rather than a rounded gravel.

Crushed stone will pack together and not move under foot as much as a rounded gravel. With that said, please recognize that many people use rounded gravel because they like the appearance.

It is best to use 1/4″, 3/8″, 1/2″, or 3/4″ size where it is being used under foot for patios and walks.

*If you like the look of larger stone for paving, we suggest you lay 1-1/2″ or 2″ flagstones. Leave spaces between the flagstones to fill with gravel of your choice.

As ground cover, there is no limit to the size of gravel to use. 5″ to 8″ River Jacks or Washington Fieldstone makes a good ground cover and will stay in place when raking leaves.

Gravel next to red brick pathway

Chart for Figuring the Coverage of Stone

 

1 Ton = 20 cubic feet of stone 1 bag (80 lbs.) = 4/5 cubic foot
Depth Coverage
2″ 120 sq. ft.
3″ 80 sq. ft.
4″ 60 sq. ft
5″ 50 sq. ft.
6″ 40 sq. ft.
Depth Coverage
2″ 4.8 sq. ft.
3″ 3.2 sq. ft.
4″ 2.4 sq. ft
5″ 2.0 sq. ft.
6″ 1.6 sq. ft.

Chart for Figuring the Coverage of Stone

Recommended Depths for Walkways and Patios

 

Stone Size Minimum Depth
1/2″ & Smaller 2″
3/4″ to 1″ 3″
1″ to 2″ (see above) 4″

Recommended Depths for Walkways and Patios

Recommended Depths for Driveways

4″ to 6″

It’s best to use a base material of crusher run, 4″ minimum, then a top coat of stone of your choice.

Dig out approximately 3-1/2″, lay in approximately 2″ of stone dust then lay flagstone level with finished grade and fill gaps with gravel.

Flagstone installation diagram
Irwin Stone Logo

Rockville

601 East Gude Drive
Rockville, Maryland 20850

Frederick

275 Interstate Circle
Frederick, Maryland 21704

Irwin Stone Logo

Rockville

601 East Gude Drive
Rockville, Maryland 20850

Frederick

275 Interstate Circle
Frederick, Maryland 21704

Closed Saturday, September 1 through Monday, September 3 for Labor Day | Monday-Friday 6:30 AM - 4:00PM | Saturday 7:00 AM - Noon | Sunday Closed