It is important to know the thickness and weight of lead flashing rolled lead using lead codes, and different codes correspond to different applications. The first code is 3, which has a thickness of 1.32mm and a weight of 14.97 kg/m2. It is ideal for decorative or lightweight roofing applications that require thin lead sheets.
As for code 4, it has a thickness of 1.80mm and a weight of 20.41 kg/m2. This code is suitable for a wider range of applications than code 3, since it is thicker and heavier. It is typically used for roofing and facades.
Unlike code 4, code 5 is even thicker, weighing 25.40 kg/m2 and suitable for more heavy-duty applications. It is often used for roofing and industrial and agricultural structures.
This code is used for industrial roofing and flooring applications that need extra strength and durability, as it has a thickness of 2.65mm and a weight of 30.05 kg/m2.
Having a thickness of 3.15 mm and a weight of 35.72 kg/m2, code 7 is ideal for heavy-duty industrial and commercial applications, such as roofing and flooring in factories and warehouses.
Finally, code 8 has a thickness of 3.55mm and a weight of 40.26 kg/m2. This code is the thickest and heaviest listed, and is suitable for heavy-duty applications, such as industrial buildings and infrastructure projects. A high wind load or snow load is often required in areas with this material, so it is often used for roofing and cladding.