RAM RB 20 is a 20-mil polymeric sheet, effectively arrests root penetration and redirect roots to a horizontal growth plane, helping lock in vegetation and increasing resistance to wind uplift forces.
Ram RB 20 direct roots into a horizontal plane away from waterproofing, prevent root damage to the waterproofing membrane and prevent root intrusion into Green Roof and planters application.
All laps should be a minimum of 12 inches. Turn up a minimum of 4 inches above finish elevation line at perimeters and projections and temporarily tape to the walls. Tape all seams with Barrett Ram RB 25 Seam Tape. Repair punctures and any other damages before installing a drainage mat.