As you can see, your choice of metal may largely hinge on how visible your project will be. A pipe buried underground doesn’t need to be pretty; a front door to a commercial building does. Your budget, desired appearance, and functional requirements will determine which material you need for your project.

If you need material for a rough-and-tumble application, you may need to spring for a high-end metal. Situations in which a highly durable metal is ideal include exposure to:

• Salt water or deicing salt
• Hot, humid areas with infrequent rainfall
• High pollution levels

Aluminum doesn’t hold up well around salt and will corrode over time, making it ill-equipped for coastal applications. On the other end of the spectrum, brass fixtures are great options for all environments.

If you are looking for more function than beauty, it may be appropriate to use one of the less expensive but highly durable galvanized steels.

If you need longer term protection or a brighter, more polished look, stainless steel may be your choice.

If your project is highly aesthetic or has a need for the rich red metal hue, one of the copper-based alloys may be the best material for you.

Depending on your project, there may be more factors in choosing your ideal metal.

For example, what about weight? Aluminum is lightweight and is easily transportable. Steel, meanwhile, is much heavier. If portability matters to you, then make sure you’re buying a lighter metal.

It’s easy to see why you must examine every angle before deciding on the best metals for exterior projects. Do your research, get the manufacturer involved, and make a well-informed decision that will have a long-lasting positive impact.