The efficient disposal of water is essential to the well-being of all buildings, especially those that were built in a traditional manner. Cast iron has traditionally been one of the most popular materials for the manufacture of rainwater goods (gutters, downpipes etc.), which provide an important function in carrying water away from a building and preventing it from penetrating the fabric. The neglect of this system, and its component parts, can have disastrous consequences. Poorly functioning rainwater goods are often directly responsible for serious internal and external deterioration and costly repairs. This INFORM aims to let property owners and occupiers understand the risks so that they can quickly identify problems and carry out regular maintenance.