Copper GuttersCopper gutters will not hold up that much better or last longer than aluminum gutters for the added cost. There are certain long term and short term advantages to copper gutters, as long as they are installed properly. Lets face it, one of the main reasons people get copper gutters for their house is for the bragging rights. The standard 16oz copper typically used for gutters is a little stronger than aluminum, but not by much. The main reason to get copper gutters though is the simple fact that you will not need to deal with the painting issue again and they will not mildew like any painted surface.
Galvanized Steel GuttersGalvanized gutters are steel gutters coated with a layer of zinc. This type of gutter is strong but is also prone to rust. Proper gutter installation is very important to ensure proper drainage and avoid standing water in your gutters. Leaf protectors will reduce the amount of leaves that will settle in your gutters. It is strongly recommend that you inspect and clean galvanized gutters often to prevent clogging and premature rusting.
GalvalumeGalvalume is steel, with a coating of aluminum and zinc. The result is a strong, durable metal with proven long term corrosion resistance. The coating is 55% Aluminum and 45% Zinc and is applied to the steel sheet by a continuous hot dipping process. Depending on the geographic location of the installation, galvalume has approximately nine times the longevity of galvanized steel.
Zinc GuttersZinc gutters are usually made from an alloy of 99.5 percent zinc with small amounts of copper and titanium. Similar to copper, zinc is normally used unpainted and will develop a protective patina that protects the zinc gutter