![]() ![]() A chimney is un-insulated or for some other reason cold.The air controls on wood stoves are significantly turned down.The following are the conditions or combination of conditions which result in stage three creosote: As the creosote hardens, it is often repeatedly recoated. Third degree creosote is extremely concentrated fuel and looks like tar running down inside the flue. In fact, there are times when the only way to make a chimney safe is to install a new chimney liner. Creosote – Stage 3Ĭreosote in the third stage is by far the most difficult to clean. Burning logs in fireplaces and wood stoves with glass doors typically results in this form of flammable creosote. Restricted air is the burning attribute that best describes how stage two creosote is formed. Stage two creosote doesn’t simply brush away, but it can be removed. A good description of how they look is to imagine hardened tar the size of corn flakes. The combustion byproducts are in the form of shiny black flakes. In the second stage or degree of creosote, cleanup is not as easy as in the first. This is a description of the best chimney conditions, as related to creosote. The logs on the fire have plenty of air during the combustion process, and heat pours into the chimney. This scenario fits with a traditional open fireplace. Relatively high temperatures in the chimney flue.This type of creosote is formed as a result of the combination of: This creosote is the easiest to remove because a chimney professional’s chimney brush can typically get the job done. Creosote – Stage 1įirst stage creosote is mostly ashy soot. The substance takes several forms because it has three distinct stages, all of which are dangerous because they can cause hazardous chimney fires. Creosote is mostly tar and is brown or black in color. Condensation of wood-burning byproducts results in highly flammable creosote on the walls of your chimney liner. As these substances exit through the chimney, which is cooler, condensation occurs. These byproducts include gases, smoke, unburned wood particles, water vapor, tar fog, hydrocarbon, and various minerals. When wood burns, combustion byproducts are produced and expelled through the chimney. What is Creosote and Should I be Concerned About It?Įveryone who burns fires in their fireplaces or wood stoves ends up with a creosote issue, which is a potential hazard.
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