Laying Flagstone

Mark out the area where you want to lay flagstone with spray paint. Dig up the sod and remove all organic debris. Dig down and smooth the dirt at a depth of about 3 inches. Remove tree roots also, if you have to dig under them to cut them, fill in these low spots with dirt or sand. Rake the area level and tamp the soil firmly with a hand tamper or use a power vibrating tamper for larger areas. Fill in and retamp low spots. Install edging, if desired, before you lay the stones.

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Start the laying of stones with large stones around the perimeter. If a stone is too high, pick it up and dig out some soil; if it's too low, add some soil or sand beneath it. Test each stone to make sure it does not rock and make sure it is level. Wherever possible, use uncut stones. When you have to cut a stone, lay one stone over the one it will bump up against and trace its outline with chalk or a pencil. Use a masonry saw that you can rent to cut the stone. Be sure to wear eye protection as you cut the stones.

Put dirt or sand in between the joints of the flagstone. Wet the patio surface with a fine spray, cleaning the stones while thoroughly wetting the dirt or sand in the joints to help solidify the joint fill material.