Metal Roof Structure Terminology

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Metal roof structure terminology.

Horizontal lengths of material wood or metal that are affixed to the roof and to which the finished roofing material is affixed. These indicate the resistance of a roofing system to fires originating from sources. An l shaped metal strip positioned along a roof s edges to allow water to run off the roof without running down the eaves or siding. A part used in a metal building system.

A main member used in a vertical position on a building to transfer loads from main roof beams trusses or rafters to the foundations. Is a moisture proof foil material that is placed over the roof battens and installed beneath the external roof covering eg tiles or metal. Purlins can be wood strips 1 x 2 or can metal and are usually a 1 subgirt material preferably galvanized steel. Eaves on a sloped roof the horizontal underside that projects out from the house wall.

Valley the internal angle formed by two inclined slopes of a roof. Also called non structural systems. Class a b and c fire ratings. Glossary of metal roofing terms 30 lb felt.

A metal v shaped gutter is fixed in this area to direct water to the gutter. Truss roof the prefabricated self supporting triangulated structural framework commonly used for all types of roofs. Scaffolding a temporary structure specifically used to support access platforms or working platforms. See also components and cladding.