 | This is what an Oil boiler looks like when the flueway becoms blocked with soot |
| This is the brush that was used to clean the boiler flue above. Once the chimney had become blocked, rain water turned the soot in a paste which staines anything that it comes into contact with |  |
 | Still the same boiler. This is some of the sludge that came down the chimney after the brush had been removed. |
| A Chimney with cobwebs inside to the point where air and flue gases can't escape up the chimney. |  |
 | This plate was taken from inside an appliance burning solid fuel, where the plate has melted flames could now pass through straight into the flue increasing the risk of a chimney fire. Always look after your heating equipment. |
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| In this chimney someone had driven a waste pipe through the flue nearly blocking the chimney. |  |
 | In this chimney a section of flue pipe had cracked letting smoke and soot pass through into another room. |
| This is what a normal un-swept chimney looks like. |  |
 | These cowl types are called inserts and are only allowed for chimneys that are not in use. They provide ventilation only for unused chimneys. This chimney however is in use and excessive tar has been forming due to slow fume movement through the flue See our cowl guide for more details or the carbon monoxide safety flyer |
This pile of twigs had been deposited by two rooks within a week. |  |
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