Aluminum Gutters For products like gutters that are made to handle rainwater, resistance to rust is vital. Aluminum gutters light weight means that gutter installers can easily lift and handle even lengthy sections of gutter, speeding installation and reducing cost. And since aluminum is easy to cut, installers can quickly miter those pesky corners. As you’ll learn, aluminum gutters can be made-to-size, on your property, with a machine that rolls out seamless lengths of trough. And when we talk about coatings, you’ll learn later why aluminum is available in so many colors. The roll-forming machines, used by installers to turn out seamless lengths of gutter, are made to take two standard thicknesses. For that reason, professionally installed aluminum gutters are either .027 or .032 inches thick. The thicker the better, the more likely your gutters are to hold up in difficult weather conditions. By contrast, off-the-shelf aluminum gutters sold to homeowners at chain stores are typically .019 inches thick. With gutters, you tend to get what you pay for. Yet aluminum has its drawbacks, as well. The metal is much weaker than steel, copper, or zinc. Lean a ladder against aluminum gutters and the gutters will deform. Same thing, if the gutter is struck by a falling tree branch. Hot and cold weather causes the metal to expand and contract, which can cause more gutters to deform and even pull the gutter away your roof’s fascia board and allowing water to leak in between. And as those smooth troughs become crinkled, the dents and dings attract dirt and debris that must be periodically cleaned out. Moreover, those mitered aluminum corners and other joints are riveted and caulked, rather than soldered. Caulk eventually becomes brittle and must be replaced. And finally, while aluminum gutters are rust-free, the metal is subjective to a corrosive “galvanic reaction” if it comes in contact with different metals such as steel, tin, and copper.