Dave,
Sorry about using our strange Antipodean words on this board, it had slipped my mind.
[Linked Image]
Gibbing, is the installation of plasterboard, which is made under the Brand name, Gibraltar Board, which has been shortened over the years to Gib board.
Oddly enough there is more than 1 type of Gib here now, they can be seen here.
Tradesmen that install Gib are called Gib-fixers and the plasterers are called Gib-stoppers down-under here. [Linked Image]