Lead Flashing – Code 3 – External RoofingProduct Overview Our 40kg roll of high performance milled lead flashing is designed for superior weatherproofing in a variety of applications. This roll offers a width of 450mm and a length of 6m, providing 2. 7m of coverage per roll. The Code 3 thickness of 1. 32mm ensures that each square meter weighs 14. 97kg, making it ideal for soakers, sheltered details, and lighter duty weatherproofing where reduced weight and easier handling are required.