Conservation Area: An area designated by the local authority to be of special historical or architectural significance, in which certain developments may be restricted.
Dormer: A type of framed window which projects vertically though a sloping roof.
Down Pipe: A plastic, cast iron or steel pipe which takes rain water away from gutterings to drains.
Eaves: The lower edges of a sloping roof where the first tiles of slates are laid into the fascia board.
Flashing: A strip of metal, typically lead or zinc, used where elements of a roof meet, to protect the joints from water damage.
Gable: The triangular section of wall underneath a sloping roof.
Gutter: A trough that directs water from the eaves to the down pipes.
Mono-pitch Roof: A roof which slopes in one direction.
Parapet: A low wall that extends above the roofline of a building.
Pitch: Also known as slope, the angle or steepness of a roof.
Rafter: A sloping beam that forms the main structure of a roof.
Ridge: The apex or highest point of a pitched roof where the slopes meet.
Soffit Board: A panel fixed to the lower end of rafters underneath the eaves of a house.
Underlay: A layer of material laid between a covering and a sub-structure – for example between a carpet and the floorboards beneath it.
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