What causes blocked drains?

Rainwater drains are part of your rainwater drainage system that designed to take rainwater water from your roof and expel it away from your property and foundations. Blocked gutters, outlets, downpipes, and/or drains will result in water related damage such as damp and decay. It’s important to understand that whatever lands on your roof will eventually end up in your drains via the gutter and downspouts, as they are washed through with rainwater. This can include obvious things such as leaves, moss, and other general gutter debris, but it can also include less obvious which are the most common things that actually block gutters and drains alike! Roofing material such as loose ridge and valley mortar, cracked or chipped roofing tiles and slates, tennis balls, dead birds, and even discharged firework cylinders and the wooden stakes just to name a few.  These are particularly good things that like to trap awkwardly in drains and thus creates a water tight blockage.