Plaster ceilings are a type of ceiling finish made from a mixture of gypsum, lime, or cement, combined with water. This material is applied in layers to create a smooth, durable surface. Plaster ceilings can be molded into various shapes and designs, allowing for decorative elements like cornices and roses that enhance the aesthetic appeal of a room. These ceilings are known for their excellent sound insulation and fire resistance, making them a popular choice in both residential and commercial buildings. While they require skilled craftsmanship for installation, plaster ceilings can last for many years with proper maintenance, adding value to a property.