How are gutters sized?
Gutters are often sized according to the roof area they drain. 5″ K-style gutters are the residential industry’s standard. 6″ K-style gutters are used for larger roofs. Half Round gutters are typically sized 1 inch wider than K-style to provide the equivalent capacity. Wider gutters may be required for certain hard surface roofing materials, such as slate and tile, or used on steeply-pitched roofs, to prevent water from shooting over the gutter. Gutters should be positioned tight against roofing materials and the fascia.
