Gutter installation should follow a couple basic rules. Gutters must be pitched so water will flow to the downspouts. The rule of thumb for this slope is a vertical 1/2 inch for every 10 feet of horizontal run. If the run is more than 35 feet long, some specialists recommend installing the high point of the system in the middle and sloping the gutter downward in both directions to downspouts on both ends of the run. Water exiting the downspout must always be directed away from the foundation.
The gutter industry has seen an explosion in the accessory side of the industry. Screens, barriers, and other devices used to keep foreign objects out of the gutter are literally everywhere. When considering such accessories, homeowners will want to evaluate the types of debris that may land on or in their gutter. Homeowners will want to consider everything from the number of trees to the types of leaves. Gutters are most commonly clogged by leaves, pine needles, and helicopter seeds.