Dry lining (sometimes referred to as drywalling) is a system for cladding the internal faces of buildings, such as walls and ceilings. Plasterboard is attached to the internal faces, creating a smooth surface that finishes such as paint can be applied to directly, a ‘wet’ plaster finish is not required. Dry lining requires less technical expertise than traditional plastering and required little water, hence the term ‘dry’ lining.

Dry lining is generally faster and easier to install than wet plaster, and generally results in an overall construction that weighs less. Dry-lined walls are easier to change, making buildings more flexible. Dry lining can also be used to increase thermal insulation and to prevent condensation. Additional insulation may be installed behind the plasterboard, and a vapour barrier might also be installed.