A solvent based surface treatment for new lead sheet or flashings. PATINATION OIL when correctly applied gives an evenness of colour to lead while its natural patina develops, it also prevents unsightly white staining. The lead to be treated should be clean, dry and free from cement, dust and loose debris that may affect adhesion. PATINATION OIL should be applied as soon as possible, immediately after each step of the lead work and certainly not later than the end of the working day. Shake the can vigorously for at least 2 minutes before use and occasionally during application.