When dealing with a large wall surface, there are a few plastering techniques you can consider: 1. Skimming: Skimming involves applying a thin layer of plaster over the entire surface to create a smooth finish. It is typically used when the wall is relatively flat and doesn't require significant repairs. 2. Rendering: Rendering is a technique where a thicker coat of plaster is applied to create a more textured finish. This technique is commonly used for external walls or areas that need additional protection. 3. Pargeting: Pargeting is a decorative plastering technique that involves creating intricate patterns or designs on the wall's surface. It requires skilled craftsmanship and can add a unique aesthetic to a large wall. 4. Spray plastering: For large wall surfaces, spray plastering can be an efficient technique. It involves using a special machine that sprays a fine layer of plaster onto the wall, covering a large area quickly. This method is often used in commercial or industrial settings. Remember, when dealing with a large wall surface, it's essential to prepare the wall properly by ensuring it is clean, dry, and free of any loose or damaged material. Additionally, it