Finishing foam covered foundation

What are the best options for covering a slab foundation surrounded by 2 inch foam.   We have started with 2 rows of Versetta stone,  but are growing concerned that putting… What are the best options for covering a slab foundation surrounded by 2 inch foam.   We have started with 2 rows of Versetta stone,  but are growing concerned that putting…Read MoreGreenBuildingAdvisor