This topic covers information related to the maintenance of stone assemblies, that occurs during the life cycle of a structure. Stone assemblies are a durable material that has a long life expectancy. After construction and during the life cycle of a building stone assemblies should be inspected for damage, deterioration and cracking. Maintenance and/or repairs may be necessary depending on the condition of the stone assembly. Neglected stone assemblies may need to rehabilitated, replaced, restored or preserved.