How thick is a dry-lined wall?

Short answer: The thickness of a dry-lined wall depends on the plasterboard, fixing method, frame and insulation used. Standard plasterboard is commonly 9.5 mm or 12.5 mm thick, although thicker specialist boards are also available. When plasterboard is fixed directly to masonry with adhesive, the completed lining may add around 20 to 40 mm to the wall, depending on how much adhesive is needed to create an even surface. A timber or metal framed system will be thicker because it includes the depth of the studs, insulation and plasterboard. These walls may add 75 mm, 100 mm or more. Double layers of board, acoustic systems and high-performance insulation can increase the thickness further. The design should balance insulation, sound reduction, strength and the amount of internal floor space available.

Helpful context

The right system depends on the wall condition, the finish you want, and whether there are services or awkward areas to work around.

For a proper quote, we will look at wall condition, moisture, access, insulation, and the finish you want. That keeps the price accurate and avoids surprises later.