Thoughts on using Form-a-drain in place of interior and exterior drain tile?

Our build is slab-on-grade with footings and 4’ stem walls. Currently, our build specifies the use of form-a-drain around the entire perimeter and an interior passive sump and radon mitigation… Our build is slab-on-grade with footings and 4’ stem walls. Currently, our build specifies the use of form-a-drain around the entire perimeter and an interior passive sump and radon mitigation…Read MoreGreenBuildingAdvisor