Here is an example of milled lead sheet dressed over mop stick rolls. This recently completed lead roof shows the ‘neat and tidy’ finish that can be achieved by the use of patination oil. Patination oil is designed to prevent the build-up of oxides which tend to cause unsightly staining on adjacent roofing elevations.
 

This lead valley junction shows how effective they can look when the roof coverings are cut neatly in an angle. In this example, reconstituted slates make up the roof covering (as with hips) valleys can have many different types of lining but the most common method is code 5 lead sheet.