A quick drying low viscosity, pure-Asphalt-Based material made with select penetrating oils and fast-setting petroleum solvents. It provides maximum bond to Asphalt, concrete, masonry and metal surfaces, and it performs as a bonding agent between the surface and Asphaltic cements and coatings used in roofing and waterproofing applications. This product is chemically inert to resist mild acids and alkali. Coatings applied to this primer may be hot or cold, solvent Based or emulsion Based. Not for use with coal tar Based materials. Tam-Pro 813 adheres to porous and non-porous surfaces to maximize bonding. 100% Asbestos Free.