Oregon Construction Contractors (CCB) Practice Test

Which material is recommended for use in coastal areas due to its resistance to corrosion?

1. Copper

2. Uncoated aluminum

3. Steel

4. Regular aluminum

The correct answer is: Copper

Copper is recommended for use in coastal areas primarily due to its excellent resistance to corrosion, particularly in environments where saltwater exposure is prevalent. The properties of copper allow it to withstand the harsh conditions found in coastal regions, reducing the risk of deterioration compared to many other metals. Copper naturally forms a protective patina when exposed to the elements, which further safeguards it from corrosion. This makes it an ideal choice for various applications in coastal construction, such as roofing, gutters, and downspouts. Its long lifespan and minimal maintenance requirements further enhance its suitability for environments with high humidity and salt concentrations. Other materials, such as uncoated aluminum and regular aluminum, are more susceptible to corrosion in salty environments. Steel, unless specifically treated or galvanized, is also prone to rust and corrosion when exposed to moisture and salt. Thus, while copper may involve a higher initial investment, its durability and longevity in coastal applications support its recommendation as a preferred choice.