What are the technical requirements of plastering mortar?

The technical requirements of plastering mortar, also known as stucco or render, depend on the specific application and conditions of the project. However, some general technical requirements of plastering mortar include:

1. Adhesion: Plastering mortar should have good adhesion properties to ensure that it bonds well to the surface it is applied to, creating a strong, durable finish.
2. Workability: Plastering mortar should be easy to work with and apply, allowing for smooth and even application to create a uniform finish.
3. Setting time: Plastering mortar should have a reasonable setting time, allowing for sufficient working time and ensuring that it sets firmly within a reasonable time frame.
4. Water resistance: Plastering mortar should be able to resist water to prevent water penetration and damage to the substrate.
5. Durability: Plastering mortar should be able to withstand the effects of weathering and other environmental factors, such as temperature changes and exposure to UV light, without deteriorating or degrading over time.
6. Flexibility: Plastering mortar should be able to flex and move with the substrate to prevent cracking or dislodging due to movement or stress.
7. Breathability: Plastering mortar should be able to allow moisture vapor to pass through, preventing buildup of moisture within the wall or substrate.
8. Appearance: Plastering mortar should be able to create a smooth, even, and aesthetically pleasing finish, suitable for the intended application.

By meeting these technical requirements, plastering mortar can provide a high-quality and long-lasting finish, protecting and enhancing the appearance of the substrate.