Gable - A triangular area of an exterior wall formed by two sloping roofs.
Gambrel - A roof where each side has two slopes; a steeper lower slope and a flatter upper one; a 'barn roof'. Often found in Colonial revival houses in the "Dutch" style.
Gazebo - A small summerhouse or pavilion with a view, or a belvedere on the roof of a house.
Girder - A strong, wooden member spanning foundation walls designed to support joist ends.
Girt - Supports the second floor joist in two-story construction.
Grounds - Wooden strips of plaster thickness found behind inside window and door casings and baseboards to provide adequate nailing surface.
Glass Block - A window type formed by a compilation of small translucent cubes of glass.
Gutter - A metal or plastic trough along the
edge of a roof that collects water off the eave and
carries it to the down spout.