steps with brick and flagstone - Knowledgebase Question

Beach Park, Il
Question by pearcegilesl
June 19, 2009
When using bricks as support, and flagstone as stairs, (on hill using gravel and sand under bricks and flagstone). What would I use to fill in the cracks between flagstone~?~??

Answer from NGA
June 19, 2009


You can use mortar or you can pack sand between the flagstones. Mortar will make the steps more stable in the long run, but if you pack sand or a sand/soil mix between the flagstones and then plant a stepable ground cover such as Irish Moss or Wooly thyme, the roots of the plants will knit the sand/soil together and make for a sturdy step. Either way, I'm sure your project will be fantastic. Enjoy!

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