Bungaroosh is a composite building material used almost exclusively in the English seaside resort of Brighton and its attached neighbour Hove between the mid-18th and late 19th centuries, when it grew from a fishing village into a large town. Bungaroosh is often found in buildings of that era in the town and in its near neighbours Worthing and Lewes, but is little known elsewhere. In this respect, it is similar to mathematical tiles - another localisedbuilding material introduced in, and characteristic of, that era. It can incorporate any of a wide variety of substances and materials, and is used most often in external walls. The manufacture of bungaroosh involved placing miscellaneous materials, such as whole or broken bricks, cobblestones, flints, small pebbles, sand and pieces of wood into hydraulic lime and then pouring it between shuttering until it has set. The shuttering process typically involved erecting a wooden frame, pouring in the lime and adding solid materials to the mixture. Other structural fittings, such as brick piers or wooden lintels, could then be added if more support was needed or other structures were to be added. This was particularly common in Brighton, where bungaroosh walls were often built behind the impressive stuccoed façades of Regency-style houses. The material is particularly prevalent in the early 19th-century squares, crescents and terraces of Brighton's seafront, such as Regency Square, Royal Crescent and the Kemp Town estate. Another technique was to wait for the mixture to set, then render it with a lime-based mixture and paint it. This produced a consistent, regular surface which could be used to build the symmetrical façades required in Georgian architecture - a popular style in Lewes. Although the material is solid once set, it has poor resistance to water. If it dries out completely, it can crumble away; but if it gets wet it can dissolve and start to move, causing structural failure. Regular drying-out and saturation caused by the effects of the weather has caused some bay-window fronts to collapse in Brighton. A common maxim states that much of Brighton "could be demolished with a well-aimed hose"; the supposed extent of this destruction varies between "a third" and "half" depending on the source. The etymology of the first part of the word is the same as bungalow; late 17th century: from Hindi baṅglā ‘belonging to Bengal’. Second part is unknown, possibly a colloquialism.
