Tadelakt is a lime plaster brilliant and impermeable which can be used as well in interior as in outside. It is the traditional coating of the palaces, hammams and bathrooms of the riads in Morocco. It has the characteristic "to be shoed" with a roller of river and to be treated with a soft soap to acquire its final aspect. Tadelakt has an aspect soft and fine with undulations due to the work of the roller; it is tight, what makes it possible to also use it to make bath-tubs and wash-hand basins and confers great decorative capacities. Tadelakt is generally carried out with lime of the area of Marrakesh, but other type of lime can also be appropriate.