Improper annual chimney maintenance and cleaning.
Improper or Unsafe Installation of Chimney.
Lint Buildup in your Dryer Vent.
Thermochemical decomposition of organic material at elevated temperatures in the absence of oxygen.
Make sure you understand the mechanics of your system, whether it is masonry or prefabricated.
Cracks in the chimney liner, mortar crown, or fireplace.
Negative air pressure incorrectly draws smoke and carbon monoxide emissions back down the chimney into your house.
Water erosion will cause cracks and gaps in your flue tiles or mortar joints which lead to fires and carbon monoxide emissions to your home.