The duration of each stage in plastering can vary depending on factors such as the size of the wall, the complexity of the project, and the experience of the plasterer. As a rough estimate: Surface preparation: This stage can take a few hours to a day, depending on the condition of the wall and the extent of repairs needed. Base coat application: Applying the base coat typically takes a day or two, allowing sufficient time for drying before the next stage. Skim coat application: Applying the skim coat usually takes a day, but it may require additional time for drying and any necessary touch-ups. Sanding and polishing: This stage can take a day or two, depending on the desired smoothness and perfection of the finish. Priming and painting: Priming usually takes a day to dry, and painting can take an additional day or more, depending on the number of coats and the drying time between them.