Retaining walls, Trench Drains, and Septic Tanks Earth Dams and Dikes Canals Biobarrier® can be used to prevent root intrusion Into earth-filled structures and drain systems Associated with dams, dikes and canals. For large areas, lengths of biobarrier® can be seamed together using hot or cold melt adhesives. Pinned, overlapped seams can also be used. … Continue reading Earth dams, Dikes, Canals, and Foundations