How does a chimney sweeping log work?


Quick Answer

Chimney sweeping logs, often known as creosote sweeping logs, are logs that burn for 90 minutes over hot embers to release additives that attach to creosote deposits. These additives reduce said deposits and decrease the likelihood of a chimney fire. The creosote additives continue to work during fires burnt within one to two weeks after the initial burning, sometimes causing creosote to retreat to the bottom of the fireplace or woodstove.

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Full Answer

Chimney sweeping logs are compatible with wood-burning devices including traditional fireplaces, fireplace inserts and gas fireplaces. They also work with wood and coal stoves, wood and oil boilers and straight wood furnaces. They are compatible with all flue pipes, including masonry flues, as well as catalytic converters. However, chimney sweeping logs are not compatible with barbeques, electrical appliances, gas logs, and oil and pellet stoves.

The number of chimney sweeping logs needed per season differs depending on how frequently the homeowner uses the fireplace. For homeowners who only light a fire on the weekend, burning one chimney sweeping log at the beginning or in the middle of the season is sufficient. Homeowners lighting a fire every day should use two logs, one at the beginning and one in the middle of the season. Those choosing to have a continuously lit fire should use one chimney sweeping log every two months to prevent creosote buildup.

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