Surface preparation is the process of cleaning and preparing a surface before applying a finish, such as paint or adhesive. This step is crucial because it ensures that the new material adheres properly and lasts longer. Common methods of surface preparation include sanding, cleaning, and priming, which help remove dirt, grease, and old paint. Proper surface preparation can significantly affect the final result of a project. For example, when preparing a wall for painting, using a primer can create a smooth base that enhances the color and durability of the paint. Neglecting this step may lead to peeling or uneven surfaces, resulting in a less appealing finish.