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Building elements

Nogging

A nogging is a short horizontal piece of timber fixed between studs or joists to stiffen the frame and give a fixing point for boards and fittings.

Also known as noggin, noggins, blocking, dwang, bridging

Noggings (called blocking in North America and dwangs in parts of the UK and New Zealand) run between the vertical studs of a wall or between floor joists. They stop the members from twisting, brace the frame, and provide solid backing wherever a board edge, a cabinet or a handrail needs to be fixed.

Each nogging has to be cut to the exact clear distance between two studs. In practice timber varies slightly in thickness, so a nogging cut to the nominal dimension can push a frame out of square: a small detail that adds up across a whole wall.

Related terms
StudA stud is one of the vertical members that make up the frame of a wall panel. Framing stationA framing station is the machine that assembles studs, plates and noggins into a wall frame and nails them together. Dimensional toleranceDimensional tolerance is the permitted deviation from a specified size, such as how much a wall panel may differ from its drawn length, height or squareness.
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