Gutters and downspouts are generally not required on steel buildings, but they act as trim to enhance the appearance of a building and control drip, splash and drainage.
The main purpose of gutter and downspout systems is to collect rainwater from the roof and direct it away from the building foundation by means of leader extensions, splash blocks, or underground drain lines. Gutter systems take more abuse from extreme weather conditions, particularly ice and snow, than any other component of the metal building envelope. They are also subject to damage from ladders and being stepped on, as well as from falling treel limbs and debris.
Before 1960, most gutters were made of wood or metal in a half round shape. During the 1960s, roll-formed metal gutter technology was introduced that allowed metal gutters to be made lighter and less expensively. Initially available primarily in galvanized steel, roll-formed gutters are now available in copper, aluminum, galvanized, and painted steel.
Steel gutters and (Downspouts) leaders are available in a variety of styles, including K-style, square (box gutters), and half-round. Available materials include electroplated and hot-dipped galvanized and Galvalume(r). Finishes also include plain galvanized, baked enamel, modified siliconized acrylic and polyester, and fluoropolymer coatings such as Kynar.
Steel gutter and downspout system is stronger than aluminum at equivalent thickness and contracts one-half as much. Some newer coating systems allow limited guarantees up to 50 years. Steel is popular in Northern states with snow and ice conditions. Disadvantage is some galvanized finishes have a limited life span. Hot-dipped galvanized gutters are preferred over other galvanized finishes, but are not recommended for maritime environments unless the coil has been pre-coated. Galvanized finishes are rarely cleaned or primed properly and when field painted, the paint can fail prematurely.
The main purpose of gutter and downspout systems is to collect rainwater from the roof and direct it away from the building foundation by means of leader extensions, splash blocks, or underground drain lines. Gutter systems take more abuse from extreme weather conditions, particularly ice and snow, than any other component of the metal building envelope. They are also subject to damage from ladders and being stepped on, as well as from falling treel limbs and debris.
Before 1960, most gutters were made of wood or metal in a half round shape. During the 1960s, roll-formed metal gutter technology was introduced that allowed metal gutters to be made lighter and less expensively. Initially available primarily in galvanized steel, roll-formed gutters are now available in copper, aluminum, galvanized, and painted steel.
Steel gutters and (Downspouts) leaders are available in a variety of styles, including K-style, square (box gutters), and half-round. Available materials include electroplated and hot-dipped galvanized and Galvalume(r). Finishes also include plain galvanized, baked enamel, modified siliconized acrylic and polyester, and fluoropolymer coatings such as Kynar.
Steel gutter and downspout system is stronger than aluminum at equivalent thickness and contracts one-half as much. Some newer coating systems allow limited guarantees up to 50 years. Steel is popular in Northern states with snow and ice conditions. Disadvantage is some galvanized finishes have a limited life span. Hot-dipped galvanized gutters are preferred over other galvanized finishes, but are not recommended for maritime environments unless the coil has been pre-coated. Galvanized finishes are rarely cleaned or primed properly and when field painted, the paint can fail prematurely.
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