Tadelakt
Tadelakt is a bright, nearly waterproof lime plaster which can be used on the inside of buildings and on the outside.
It is the traditional coating of the palaces, hammams and bathrooms of the riads in Morocco. Its traditional application includes being polished with a river stone and treated with a soft soap to acquire its final appearance and water resistance. Tadelakt has a luxurious, soft aspect with undulations due to the work of the artisans who finish it; in certain installations, it is suitable for making bathtubs, showers, and washbasins and confers great decorative capacities. Traditionally, tadelakt is produced with the lime of the area of Marrakech.
The restoration of the riads of Morocco has focussed attention on this ancient technique.
Tadelakt more generally refers to any lime plaster applied according to the principles and techniques of Moroccan tadelakt, but using the lime bodies available in places other than Marrakech.
The basic characteristics of a tadelakt plaster are these:
1) It is a lime plaster. It does not include Portland cement.
2) It may include fine marble or limestone sand, but not other aggregates.
3) It has been compressed when plastic, eliminating all voids.
4) It has been mechanically polished, using stones or abrasives that are harder than the plaster finish, to provide a smooth, sometimes shiny, finish.
5) It has been treated with a natural soap (often "black" or olive oil soap) to speed carbonation of the surface and render the surface more water-resistant.
See also:-
Stucco
Zellige
Earthen plaster
Polished plaster
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