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    Metal Roofing Glossary

    A variety of terms and phrases commonly used in the roofing industry to describe the roof.

    Barrel roof

    A roof with a semicylindrical cross section.

    Butterfly roof

    Has two slopes descending to a central valley.

    Flat roof

    A roof that has either no slope or a gently sloping pitch to aid with draining rainwater.

    Gable

    The triangular wall element at the end of a pitched roof from cornice or eaves to ridge.

    Dormer

    A projecting structure built out from a sloping roof, usually housing a vertical window.

    Eaves

    The overhanging lower edge of a roof.

    Gable roof

    A roof which slopes downwards i two directions from a central ridge so as to form a gable at each end.

    Hip

    The inclined projecting angle formed b the junction of two adjacent sloping sides of a roof.

    Hip roof or hipped roof

    A roof which has sloping ends and sides meeting at an inclined angle.

    Lean-to

    A shed roof with the higher end abutting the wall of a larger building.

    Mansard

    A roof which has a steeper lower part and a shallower upper part.

    Pitch

    The slope of a roof.

    Rake

    The inclined, usually projecting edge of a sloping roof.

    Ridge

    The horizontal line at the top of a roof.

    Rise

    The height of a sloping roof from eaves to ridge.

    Roof

    The external upper covering of a building, including the frame that supports it.

    Run

    Horizontal distance from eaves to the ridge of a sloping roof.

    Shed roof

    A roof with only a single slope.

    Skylight

    Opening in roof, glazed to admit light.

    Valley

    The intersection of two inclined roof surfaces.