Is An All In One System. There Is No Need For Separate Primers (Apart From Metal Surfaces). It Has Excellent Adhesion And Is Tough; Flexible And Non Toxic. Suitable For Use In Potable Water Conditions. Is Recommended In Various Areas Like Flashings; Parapet Walls; Flat Roof Waterproofing Areas And Sealing Joints; Laps And Roofing Screws On Corrugated Roofs. Black In Colour. Coverage 2.1 M2 Per Litre Full System.