Calder Industrial Code 4 Lead Flashing 450mm x 6000mmCalder Lead Roof Flashing is the ultimate long term solution for watertight roofing, offering a lifespan up to three times longer than most synthetic alternatives. Lead is one of the most environmentally friendly materials in construction, made from 100% recycled lead with a low carbon footprint and energy efficient production. The initial installation cost is comparable to man made flashings when considering the savings from adhesives and sealants.