Flagstone Versus Concrete For A Patio

Q: Would flagstone be cheaper than a cement slab if doing a 10x20 patio?

A: A 10 x 20 patio in concrete 6" thick is 100 cu.ft of concrete or aprox. 4 cu. yds at 4" thick it is aprox. 3 cu. yds. Depending on where you are you will pay between $125 and $175 per cu. yd. Then you need material to make a form, and wire mesh to help prevent the concrete from cracking. You still have to prepare a good base for the concrete and you will need some tools such as a float to finish the concrete properly.

Flagstone requires a sand base properly compacted. Some people like to mortar the joints. Quality flagstone will cost about $5 to $10 a square foot, depending on the thickness and where you are located. But the installation is easier and you can do it at your own pace.

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