MiraDRI 860/861 is a self-adhering sheet membrane consisting of 56 mils (1.4 mm) of rubberized asphalt laminated to 4 mils (0.1 mm) of polyethylene to form a minimum 60-mil (1.5 mm) membrane. The combination of these two excellent waterproofing materials provides a high-performance, extremely durable waterproofing barrier. MiraDRI 860/861 is suitable for installations where the ambient temperature is 40°F (4.4°C) or above. MiraDRI 860/861 can be used for applications between 25°F (-3.9°C) and 40°F (4.4°C) if the product is stored in a heated area until use and the laps are treated with Henry contact adhesive.

MiraDRI 860/861 membrane is used for vertical and horizontal waterproofing on structural foundation walls and decks. Below-grade foundation walls, tunnels, split slabs, plaza decks and parking decks are all areas where MiraDRI 860/861 may be applied. MiraDRI 860/861 also may be used in interior areas such as mechanical rooms, laboratories, kitchens and bathrooms. MiraDRI 860/861 should be covered with either Henry 200V/300HV Protection Course, Henry Protection Board, or Henry MiraDRAIN® drainage composites.