• Bostik Rito penetration primer for roofs is a general purpose primer for steel, slate, concrete, asbestos cement, asphalt, corrugated iron etc.
• It is often essential as a surface treatment prior to use of bituminous adhesives, solutions, emulsions and flashing strips
• It is designed to penetrate and seal porous surfaces before application of waterproof protective systems. Available in 5L and 22.5L