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 How to choose the correct chimney rod brush?

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Chimney condition

Wonkee Donkee Unlined Chimney and avoiding damage when sweeping the chimney The condition of the chimney may determine what type of brush you require. If the chimney is an old brick chimney with no flue liner then you will require a softer brush to protect the bricks within the chimney, but you will need to sweep the chimney often to prevent a build up of tar and creosote.