What material is Z flashing commonly made from?

Z flashing is commonly made from galvanized steel or aluminum due to their durability, resistance to corrosion, and ability to withstand various weather conditions. This type of flashing is crucial for redirecting water away from critical areas such as joints between different building components, thus preventing water intrusion that could lead to structural damage.

Galvanized steel is coated with zinc, which offers a layer of protection against rust and deterioration, making it highly suitable for outdoor use. Aluminum, on the other hand, is lightweight and also resistant to corrosion, offering an appropriate choice for environments where moisture exposure is a concern.

In contrast, plastic is less suitable for Z flashing as it may degrade over time when exposed to sunlight and harsh weather. Tin, while historically used, does not provide the same level of corrosion resistance as galvanized steel or aluminum, making it a less favorable option for long-lasting applications. Wood is not appropriate for flashing as it can rot and degrade when exposed to moisture, undermining its protective function.