Chimney Cowl Product

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Q: What is downdraught?

A: Where wind for various reasons blows down the chimney preventing gases and smoke from rising up the chimney to the atmosphere.

Q: My chimney has suddenly started smoking?

A: This could be caused by the flue being blocked by mortar or something else try getting the chimney swept.

Q: What is pressure variation?

A: Where the pressure at the fire is less than at the chimney pot, sucking air down the chimney.

Q: Why should my fire smoke when the doors and windows are closed?

A: This is probably caused by lack of ventilation which is causing the pressure to drop in the room.

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