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 is 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.