Plastering materials are substances used to create a smooth, even surface on walls and ceilings. Common types include gypsum plaster, which is easy to work with and dries quickly, and cement plaster, known for its durability and strength. These materials can be applied in layers to achieve the desired finish. In addition to the main plaster types, additives like fibers can be mixed in to enhance strength, while waterproofing agents help protect against moisture. Tools such as trowels and floaters are essential for applying and finishing the plaster, ensuring a professional look and feel.