Metal Roof Structure Terminology

Scaffolding a temporary structure specifically used to support access platforms or working platforms.

Metal roof structure terminology.

These indicate the resistance of a roofing system to fires originating from sources. Horizontal lengths of material wood or metal that are affixed to the roof and to which the finished roofing material is affixed. See also components and cladding. Glossary of metal roofing terms 30 lb felt.

Eaves on a sloped roof the horizontal underside that projects out from the house wall. Class a b and c fire ratings. 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.

Also called non structural systems. A part used in a metal building system. Truss roof the prefabricated self supporting triangulated structural framework commonly used for all types of roofs. It is typically made of a polyester fleece and infused with tar.

A skillion roof is also commonly known as a shed roof. A main member used in a vertical position on a building to transfer loads from main roof beams trusses or rafters to the foundations. Valley the internal angle formed by two inclined slopes of a roof. It has a steeper and more noticeable pitch.