Henry, 5 Gallon, 787 Elastomeric Fluid Applied Waterproofing Membrane is a single component, cold-applied, rubberized asphalt emulsion which cures to provide a heavy duty "seamless," rubber-like membrane for use in waterproofing or damp proofing concrete or masonry surfaces above and below grade. It is ideally suited to be used as a premium waterproofing or damp proofing coating on concrete block (CMU) foundation walls. The elastomeric membrane formed is characterized by its high solids content while retaining a relatively high degree of workability. May be applied by trowel, brush or spray. Protects against rain, air and vapor intrusion or leakage. Excellent adhesion to most construction surfaces such as: concrete, brick, stone, wood or metal. Retains flexibility in wide temperature range. Cold applied by trowel, brush, or spray; requires no special equipment such as kettles. Covers 3 gallons/square/coat.