What are the differences between aluminum foil facing and tin foil?

Aluminum foil facing and tin foil are both thin sheets of metal used for various purposes, but they differ in composition and properties. Aluminum foil facing is a thin layer of aluminum bonded to a substrate, often used in construction for insulation, while tin foil is pure tin and is used for wrapping food or as a decorative element. Aluminum foil is lightweight, corrosion-resistant, and conducts heat well, making it ideal for cooking and insulation. Tin foil, on the other hand, is less common in everyday use due to its higher cost and lower durability compared to aluminum. It is often used in niche applications such as art and craft projects or for certain types of food packaging that require a barrier to light and oxygen.