Galvanized steel is a good choice for downspouts when you need something to withstand rust, corrosion, and extreme weather of other kinds. Aluminum is lighter and more durable, but it may not hold up as well in the elements. The same is true with copper, which is a softer metal that is more prone to damage. Usually, galvanized steel is found in commercial and agricultural applications, as well. 

Downspouts are corrugated for a few different reasons. First, this adds tensile strength and durability to the gutters. Corrugated downspouts also resist ice buildup because of the uneven surface that makes freezing and sticking difficult. As a final touch, corrugation can even hide dents, scratches, and other blemishes from sight so that your gutters always look great, even when they’re starting to age. 

This round corrugated downspout is usually paired with our half-round gutter system, but it can fit other styles that take a round downspout, as well. The corrugated steel goes best with a gutter system that matches, or that is white or black to offset the metal slightly. It is commonly found in commercial applications but can be used in residential installations, too. 

At the bottom of the corrugated downspout, you will want to place an elbow and an extension that can direct the water out and away from the home. You may also add a pipe that directs the drainage into the ground and into your drainage system, but that depends on how your home is set up. Often, the best thing to do is to work with professionals to design a gutter system and have it expertly installed. 

Round downspouts help to prevent buildup and allow for better water flow, in some instances. However, both types of downspouts have their pros and cons to consider. For many people, it might come down to a matter of aesthetics and how the gutters look on the home. Rectangular gutters are usually more affordable and available in more sizes, but the market offers something for just about everyone. Consult with an expert to get the best gutters and downspouts for your home.