CT 99 can be used on all dry, largely clean substrates (paint coats, plasters, concrete etc.). Clean away heavy dirt and remove surface growth with a wire brush.
Before use, dilute CT 99 with water at a ratio of 1 : 2 to 1 : 5. Brush this solution generously onto the affected areas -do not apply by spraying! Always apply CT 99 before the first priming coat and allow the solution to act for 8 to 10 hours.
