The lifespan of external render depends on several factors, including the quality of the materials used, the skill of the renderer, the type of finish applied, and the local climate. In general, well-applied render can last for many years, with some types of render lasting up to 25 years or more.
One of the key factors influencing the lifespan of external render is the type of material used. Traditional lime render, for example, can last for many years but may require more frequent maintenance compared to modern synthetic materials. Synthetic renders, such as those made from acrylic or silicone, are generally more durable and require less maintenance, but they may not last as long as lime render.
The skill of the renderer is also important, as a poorly applied render will not last as long as one that has been applied correctly. It is important to choose a renderer with a good reputation and to make sure that they follow best practices when applying the render to your home.
The type of finish applied to the render can also affect its lifespan. A smooth finish will generally last longer than a rough finish, as it is less prone to cracks and chips. However, a rough finish can be more effective at hiding imperfections in the wall surface, so it may be a good choice if your walls are not perfectly smooth.
The local climate can also have an impact on the lifespan of external render. In areas with extreme weather conditions, such as extreme heat or cold, heavy rain or strong winds, the render may not last as long as it would in a more moderate climate. It is important to choose a render that is suitable for the local climate and to follow any recommended maintenance procedures to help extend the life of the render.
Overall, the lifespan of external render can vary widely depending on the factors mentioned above. With proper materials, skilled application, and regular maintenance, external render can last for many years, providing an attractive and protective finish for your home.