A quality grade, highly penetrative, bituminous solution for priming surfaces prior to the application of bituminous materials and flashing tapes. Features & Benefits:- Cold applied. - Low viscosity. - Suitable for use with flashing tapes. - Heavy duty formula. - Quick drying. - Deep penetrating. - Promotes the adhesion of bituminous waterproofing systems and sheet coverings. - Stabilises porous and dusty surfaces. - Resistant to rain after approximately 30 minutes. - For exterior use. Uses: Heavy duty formula making it suitable to prime concrete roofs and floors, cementitious screeds/renders, weathered bitumen, bitumen felt, slate, mastic asphalt, weathered corrugated iron, steel, zinc and lead. It is the recommended primer for use with the BITUBOND range of bituminous roof coatings, flashing tapes or mastics. Application by brush or roller. See Technical Data Sheet for full application details.