A Guide to Blocked Flues and Chimneys

29th February 2020


	A guide to blocked flues and chimneys


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			A fireplace or wood burning stove can be a wonderful addition to your favourite gathering place, providing warmth, light, and a cosy ambiance. However, the chimney or flue must be carefully maintained to make sure that problems caused by soot and creosote build-up don’t impact the safety of your family.

			What causes a chimney or flue to block?
			Creosote and tar The thick brown oily substance that forms on the inside of a chimney consists of creosote and tar, which are by-products of burning wood and fossilised fuels. This build-up reduces the efficiency of the boiler or stove and is a potential fire hazard.

			Regular cleaning eliminates the build-up of creosote and tar within the chimney or flue.

			Animals Birds, squirrels or other animals may get into the chimney or flue and cause problems including smells, noises, blockages, and even fires.

			Plants Weeds and even young trees have been known to grow in or over a chimney, breaking apart the bricks with their root systems, attracting birds and animals and eventually blocking the chimney or flue completely.