What causes chimney fires?
When solid fuels are burnt the emissions are expelled into the chimney. As these gases rise they cool down, forming creosote – a tar like substance that sticks to your chimney or chimney lining. Creosote is extremely flammable and can be lit by even a small spark from the fire below. The following are the most common causes of chimney fires:
- Burning wet or unseasoned wood can increase the production of creosote
- Burning rubbish such as paper and cardboard allows lighted debris to enter the flue
- Blockages in your chimney which restrict air flow
- Smouldering wood embers for long periods of time
- Failing to have your chimney swept often enough