Rappailla

Rappailla is a Finnish term that broadly refers to the act of plastering or rendering. It encompasses the application of a coating, typically a mixture of cement, lime, sand, and water, to surfaces such as walls, both interior and exterior. The primary purpose of rappailla is to provide a protective and decorative finish, smoothing out imperfections and creating a uniform surface.

In construction, rappailla is a crucial step in finishing buildings. Exterior plastering, often referred to as "ulkorappaus," protects the underlying structure from weather elements like rain, wind, and temperature fluctuations. It can also enhance the aesthetic appeal of a building, offering a wide range of textures and colors depending on the chosen materials and application techniques. Interior plastering, or "sisärappaus," prepares walls for painting or other finishes, creating a smooth and durable surface.

The process of rappailla involves several stages, including surface preparation, mixing the plastering material, and applying it in layers. Different types of plaster exist, each with specific properties and applications. For instance, lime plaster is known for its breathability and flexibility, while cement-based plasters offer greater durability and water resistance. The skill of the person performing the rappailla significantly influences the final outcome, requiring precision in application to achieve a smooth and even finish. The term can also be used more generally to describe any material applied in a similar manner, such as stucco or render.