Glossary of Terms
Words beginning with Q, R
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- R -
RABBET: A cut or groove along or near the edge of a piece of wood that allows another piece to fit into it to form a joint or a joint so made. A rectangular groove made to hold two pieces together.
RAFTER: Parallel members of a roof that support battens/purlins and roofing materials.
RAIL: The top and bottom frame member of a door or window (not the jamb). Cross member of panel doors or of a sash. Also the upper and lower member of a balustrade or staircase extending from one vertical support, such as a post, to another. The horizontal member of a fence.
RAKE: The angle of slope of a roof rafter. Refers to the slope of the roof at the end of a gable. Degree of deviation from a horizontal plane.
RECTANGLE: Four-sided figure with four right angles.
REVEAL: The part of the side of a window or door opening that is between the outer surface of a wall and the window or door frame.
RIBBON PLATE: Ribbon board, soffit board; A horizontal member fixed to the top of the studs and supporting the sprockets.
RIDGE BOARD: Upper-most horizontal framing member on a roof, to which the tops of the rafters are fixed.
RIP CUT: A cut lengthwise along a board that also runs with the grain. As opposed to cross-cut.
ROOFING IRON: Corrugated metal sheet used to clad roof.
ROOF PLANE BRACE: See plane brace.
ROOFING UNDERLAY: A building paper that covers roof frame prior to the cladding being fixed. Reduces air movement and helps avoid the risk of water ingress.
ROUGH OPENING: Trim size; The framed-in opening, slightly larger than the actual window/door, that replaces wall studs to support the structure and accommodate a window/door.