Question

Will keeping tiny fires in the wood stove prevent flue fires more than having frequent larger fires?

Answer 1

Keeping tiny fires in the wood stove, also known as "creeping" fires, is generally not recommended as a primary strategy to prevent flue fires. Flue fires occur when flammable creosote deposits, a byproduct of burning wood, build up inside the chimney or flue and ignite. These fires can be extremely dangerous as they can quickly spread to the rest of the house.

Here's why relying on tiny fires is not an effective method:

1. Creosote Buildup: Tiny fires produce cooler flue temperatures, which can lead to increased creosote buildup. Creosote tends to condense on the cooler surfaces of the flue. Over time, this buildup can become a fire hazard, even if you have smaller fires.

2. Incomplete Combustion: Tiny fires can result in incomplete combustion, leading to the production of more creosote and other pollutants. Properly sized fires with adequate airflow promote more complete combustion, which reduces creosote formation.

Instead, the following practices are recommended to prevent flue fires and ensure safe wood stove operation:

1. Regular Chimney Cleaning: Schedule regular professional chimney inspections and cleanings, especially if you frequently use your wood stove. A chimney sweep can remove any accumulated creosote, reducing the risk of a flue fire.

2. Proper Airflow: Burn fires hot and avoid smoldering. Start fires with dry kindling and small pieces of wood, gradually adding larger pieces as the fire gets going. This promotes better airflow and more complete combustion, reducing creosote buildup.

3. Seasoned Firewood: Use only well-seasoned firewood with moisture content below 20%. Damp or green wood produces more creosote and contributes to flue buildup.

4. Monitor Temperatures: Use a stove thermometer to monitor flue temperatures. Higher temperatures help prevent creosote buildup, but be sure to follow the manufacturer's guidelines for your specific wood stove.

5. Safety Precautions: Install a chimney cap to prevent debris and animals from entering the flue, and use a spark guard or screen to prevent sparks from escaping.

6. Proper Sizing: Make sure your wood stove is properly sized for the space you are heating. An oversized stove operating at lower temperatures can contribute to creosote accumulation.

By following these safety practices and having occasional hotter fires to burn off any accumulated creosote, you can minimize the risk of flue fires and enjoy safe wood stove operation.