1. Lime-Based Plaster:
- Curing Time: Lime-based plaster takes longer to cure compared to other types of plasters. It undergoes a carbonation process, where the plaster absorbs carbon dioxide from the air to gain strength.
- Drying Time: Initial drying may take around 24 to 48 hours, but the complete curing process can take several weeks or even months to achieve maximum strength and durability.
2. Gypsum-Based Plaster (Plaster of Paris):
- Setting Time: Gypsum-based plaster sets quickly compared to lime-based plaster. The setting time can vary depending on the specific product and the water-to-plaster ratio. It usually takes around 30 minutes to several hours.
- Drying Time: After the initial set, gypsum plaster continues to dry and harden over time. It typically takes around 24 to 48 hours for the surface to become dry to the touch. Complete drying can take several days to a week, depending on the thickness of the plaster.
3. Cement-Based Plaster:
- Setting Time: Cement-based plaster, like gypsum plaster, sets relatively quickly. The setting time can vary based on the type of cement used and the water-to-cement ratio. It usually takes a few hours to set.
- Drying Time: Cement plaster takes longer to dry completely compared to gypsum plaster. The surface might dry within a day or two, but complete drying can take several days to a week, especially for thicker applications.
4. Factors Affecting Drying Time:
- Temperature: Warmer temperatures generally accelerate the drying process.
- Humidity: High humidity can slow down the drying time.
- Ventilation: Good air circulation helps remove moisture and speed up drying.
It's important to follow the recommendations provided by the plaster manufacturer or consult with professionals to ensure proper curing and drying of plastered walls. If the drying process is rushed, it can compromise the strength and durability of the plaster. Allow sufficient drying time before applying paint or other finishes to ensure proper adhesion and avoid moisture-related issues.