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What are the basic requirements for a chimney? (It’s not just having a hole in the top)

Your chimney must be of an adequate height and construction for the appliance it is connected to. Everything must be absolutely safe and structurally sound.

Chimneys also have to be efficient. Firstly because an inefficient chimney will cost more – you need to burn more fuel if you want to be warm enough when the chimney doesn’t draw the fire properly.
Secondly, and more importantly, inefficient chimneys deteriorate. They get clogged and blocked with tar and products of combustion. This can build up over time and break down the fabric of the flue and chimney.

If it gets to the stage where material seeps through the brickwork and stains the outside of the house, or even the interior walls (the wallpaper can also start peeling off), then the chimney needs repairing.

A more lasting ‘repair’ is flue relining. The chimney lining can be replaced with a clay, ceramic or metal liner that provides an efficient channel for flue gasses and protects the chimney from the tar and other materials being drawn up. These liners can have guarantees of 15-25 years, depending on what you choose.

In some circumstances the chimney is also filled with material to insulate the lining being installed. Depending on conditions at your property, cold air in the flue around the liner can cause condensation to build up and clog the liner with damp tar and other material. In the other extreme, insulation will protect the chimney walls from a hot flue liner.

Embers are the experts when it comes to chimney relining. We supply at fit all types of liner and we’d be happy to inspect your property and advise you of the best options for your home and appliance.

If you want to read more about flue lining then take a look at our website.

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