Lead Code 4 Roofing Lead Flashing Roll is a premium cast lead sheet and is manufactured to BS EN 12588; 2006 in accordance with British Standard and European Norms for the building industry. It is the ideal material to use for flashings and weatherproofing. Lead is highly resistant to corrosion and fully malleable, which makes it easy to use and ideal as a weatherproofing material. Also, because lead is heavy, it doesn't run the risk of lifting in high winds - unlike its non-lead alternatives.Code 4 roofing lead has a thickness of 1.80mm and is suitable for a variety of applications including vertical cladding, hip and ridge flashing, parapet, box and tapered valley gutters, bay tops and canopies, apron and cover flashings, chimney flashings and more.