Abstract: In a process for masking a part subjected to a high pressure washing cycle between the applications of two or more paint coats, the improvement comprising the steps of: spray coating on a prepainted part a washable masking material which is cuttable when set to form a nonwicking edge; self adhering the spray coating and cutting it along a paint line to form a nonwicking mask edge which prevents paint leakage or the trapping or washing solution between the masking material and part and leakage of such trapped washing solution onto a subsequently painted surface. The process includes the step of cutting and cleanly peeling a portion of the masking material from the part following the drying of the sprayed mask to expose part of the prepainted surface; at least one subsequent washing and drying of the masked part; and at least one subsequent painting of the exposed prepainted surface.