No. CIP can be applied directly to oxidised surfaces, but it is recommended you brush the surface with a wire brush to remove the worst of the rust.
No. CIP is a primer and isn't designed to be used as a finish.
Ideally, CIP must be covered as soon as possible after it has dried to avoid possible contamination of the surface.
However, if conditions won't allow it, it can be left for up to 2 weeks. When covering, it is therefore important to ascertain whether the CIP's surface is clean and uncontaminated, to ensure good adhesion of all the finishing coats.
After have cleaned the surface and eliminated all the non-adhering parts, you can apply RUSTOL-OWATROL, which should be covered with a glycerophtalic or urethane alkyd paint. Or, you can use RUSTOL CIP and cover with the paint of your choice.
OWATROL CIP is a penetrating coloured anti-corrosive metal primer that can be overcoated with any type of paint, it may also be applied to new or brightly cleaned metal surfaces. MARINE OIL is a clear penetrating oil that can be used as a conditioner for any coating where the clean up is specified as mineral spirit. MARINE OIL is also an excellent rust inhibitor but may only be overcoated with oil/alkyd or water-based paint.