RAVAPROOF LIQUID – BITUMEN PRODUCTS Home / Products / AVIP TWINAVIP TWINSprayed, two-component bituminous product which instantly creates highly elastic waterproofing membrane in constructions such as foundations, basement walls of high depth with a high water table, bridges, tunnels, reservoirs etc.Application fieldsWaterproofingBasement WaterproofingDownloads DoP | AVIP TWIN TDS | AVIP TWIN