Strong Smell from Chimney
An unpleasant musty, smoky, or foul odour coming from the fireplace, especially in warm or humid weather.
What Is Causing This?
- 1Creosote and soot deposits in the flue releasing odour in heat
- 2Damp getting into the chimney and mixing with soot
- 3Dead bird or animal decomposing in the flue
How Urgent Is This?
This is a cosmetic issue. It is not causing damage and can be addressed in your own time.
What Needs to Be Done
A chimney sweep will sweep the flue to remove soot and any debris, check for and remove any animal remains, and advise on improving ventilation or sealing the flue opening.
How Much Will It Cost?
National average estimate
Labour: £183 – £447 | Materials: £100 – £277
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Prices are estimates based on typical UK rates. Actual costs depend on the specific issue, accessibility, and your location. All quotes from tradespeople on Tradesfolk are completely free.
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Try Snap and FixHow to Prevent This
Have the chimney swept after each burning season. Fit a ventilated cap to allow airflow while keeping out rain and animals. Keep the damper slightly open for air circulation.
Related Problems
Other Chimney Sweep Problems
Smoke from the fire or stove blowing back into the room instead of going up the chimney.
Birds have built a nest in the chimney, blocking the flue and causing noise, smell, or smoke issues.
The fire burns sluggishly with a poor draught, or the chimney does not pull smoke up effectively.
Lumps of soot or debris falling down the chimney into the fireplace, sometimes accompanied by a draught.