APOC 365 ETERNA-FLASH all weather/all season rubberized flashing cement is a high-performance flashing cement specially formulated for the professional roofer. APOC 365 in an extremely versatile modified mastic that provides superior adhesion to wet surfaces, easily bonds under water and is ideal for temporary or permanent repairs. APOC 365 ETERNA-FLASH is manufactured with select asphalt, synthetic rubber, solvent and fibers to provide an E-Z Spread’ durable patching compound under the harshest weather conditions. APOC 365 is the ultimate repair compound and can be used to repair splits, seams, cracks and holes in spudded gravel, mineral surfaced cap sheet, smooth surface asphalt roofs, most APP and SBS membranes and shingle roofs. It will seal areas around chimneys, vent pipes, gravel guards, down spouts, cracks in concrete and control joints on roofs. APOC 365 is also an excellent utility mastic for use below-grade in foundation damp proofing systems.All weather or all season useUnmatched wet surface adhesionE-Z spread formulaUltimate rubberized mastic