What each part actually does
The pot helps gases and airflow leave the flue safely, while a cowl fitted over or around it adds protection against rain, birds and debris, and in some designs helps manage downdraughts.
Why the right choice depends on use
An active chimney needs a cowl that doesn't restrict airflow, while an unused one benefits from a ventilated cap that keeps weather and wildlife out without needing to accommodate smoke.
Common signs a replacement is overdue
A cracked or broken pot, birds getting into the flue, debris landing in the fireplace, or noticeable draughts are all reasons to have the pot and cowl looked at.
A relatively quick fix
Most pot and cowl replacements are completed within a few hours, making this one of the more straightforward chimney jobs when it's needed.
Our team can recommend the right pot or cowl for your specific chimney and how it's used.