10′ (3 m) per tube or 128′ (39 m) per gallon using a 7⁄16″” (11 mm) bead.
All surfaces to be sealed with Water Cut-Off Mastic must be a masonry, metal or glass substrate and free of moisture, oil, dirt and other foreign materials. Water Cut-Off Mastic cannot be used on insulation. Apply a 7⁄16″ (11 mm) bead of Water Cut-Off Mastic between the substrate and the edge of the membrane. Apply appropriate termination material and secure to provide constant compression for the Water Cut-Off Mastic.