The drawback to sectional systems is that all those seams can eventually invite leaks. That's why they're the most popular configuration. Seamless gutters, made of aluminum, galvanized steel or copper, are extruded to custom lengths on site using a portable machine. But, as you might have guessed, seamless gutters must be installed by a contractor. Sizes and shapes.
Most gutters come in several sizes and shapes called profiles.
Ks are the most common. Particularly in leafy areas, use larger downspouts, which minimize clogs. Sectional aluminum and steel gutters come in more than 25 different colors - ideal for matching trim and house colors. Gutter colors are baked on at the factory. Copper is prized for its natural color and comes unpainted.