Pargeting (or sometimes pargetting) is a decorative or waterproofing plastering applied to building walls. The term, if not the practice, is particularly associated with the English counties of Suffolk and Essex. In the neighbouring county of Norfolk the term "pinking" is used.
Pargeting derives from the word 'parget', a Middle English term that is probably derived from the Old French pargeter or parjeter, to throw about, or porgeter, to roughcast a wall. (Source: Webster's Dictionary.) However, the term is more usually applied only to the decoration in relief of the plastering between the studwork on the outside of half-timber houses, or sometimes covering the whole wall.
The devices were stamped on the wet plaster. This seems generally to have been done by sticking a number of pins in a board in certain lines or curves, and then pressing on the wet plaster in various directions, so as to form geometrical figures. Sometimes these devices are in relief, and in the time of Elizabeth I of England represent figures, birds and foliage. Fine examples can be seen at Ipswich, Maidstone, Newark-on-Trent.
The term is also applied to the lining of the inside of smoke flues to form an even surface for the passage of the smoke.