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Salt-glazed Stoneware

Salt-glaze for sale:

Salt-glazing is a technique whereby damp salt is added to the kiln during firing (through the firebox or vents) at a point above 1200 degrees C. The sodium in the salt volatizes in the kiln atmosphere and chemically bonds with silica in the clay of the pots. This forms a thin layer of extremely hard sodium-alumina-silicate glass-like glaze, often characterized by an orange-peel like dimpled surface. Salt-glazed stoneware contains several sub-categories, including brown stoneware, white stoneware, German stoneware (Westerwalt etc.), as well as Scratch Blue, Littler’s Blue and so called ‘Sewer-pipe ware’ (also known as Sewer-tile ware in the US).

British salt-glazed stonewares were made by John Dwight (and others) in the late C17th, and later in major potting centres such as Nottingham, Bristol, Derbyshire and London. Staffordshire was also a major producer in the first half of the C18th, especially of white salt-glazed wares. In the C19th stonewares were also made in quantity in Scotland.