The lifespan of ridge capping can vary depending on various factors such as the materials used, the quality of installation, and the local weather conditions. Typically, well-installed and properly maintained ridge capping can last anywhere from 10 to 30 years.

The longevity of ridge capping also depends on the type of material used. For example, cement mortar ridge capping tends to last longer than plastic or metal ridge capping. However, cement mortar ridge capping can deteriorate more quickly in areas with high exposure to extreme weather conditions or acidic rain.