FLINTKOTE 3 bitumen emulsion A mineral colloid bitumen emulsion for general waterproofing, concrete protection and metal protection Flintkote 3 bitumen emulsion is a single-pack, non-fibrated and stable water-borne emulsion which cures to form a firm and flexible bitumen waterproofing membrane. Flintkote 3 is designed for use on horizontal and vertical surface. Flintkote 3 is suitable for use as waterproof membrane on concrete, asbestos cement, roofing felt, mastic asphalt, slates, tile and metal surface.