ARS of Columbia

You need to make sure that the material allows water to pass thru the block or stone.  Both choices can allow water thru if planned ahead.  Blocks can have weep holes that allow water to pass and many ... read more

As Brittany stated earlier, we only use hot-dipped galvanized in this application. It is not a code issue but it does make a huge impact on quality and what will be seen for years to come.