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 Michael Merwick, Director

Lincoln
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FIRE PREVENTION BUREAU

   

Fireplace PictureConsumer Product Safety Commission
Chimneys: Safety Alert


CPSC research indicates that most wood heating fires involve the chimney and not the appliance itself. The majority of these fires are contained within the chimney and cause no damage to the house. The Commission is concerned, however, not only about the chimney fires that did ignite other parts of the house, but also about the potential future hazard from the continued use of chimneys whose structural integrity has been compromised by a chimney fire. This is especially true in light of the fact that many contained chimney fires are not reported to the fire services; in fact, consumers may not even be aware that a chimney fire has occurred.

Therefore, the Consumer Product Safety Commission is issuing a special safety alert concerning chimneys used with woodburning stoves, fireplaces, and fireplace inserts. The Commission urgently warns consumers to be aware of the potential fire hazards associated with these chimneys.

Now that the nation has entered the heating season, the Commission strongly urges you, if you have a stove or fireplace, to check the chimney for any damage that may have occurred in the past heating season. If it is difficult to examine the chimney, a local chimney repairman, chimney "sweep," or dealer can help. Have any damage repaired NOW.

Most fires involving either masonry or prefabricated metal chimneys occur because of improper installation, use or maintenance. The Commission staff has identified the following common causes of fires:

  • Improper chimney installation too close to wood framing.
  • Installation of thermal insulation too close to the chimney.
  • Improperly passing the stovepipe or chimney through a ceiling or wall, causing ignition of wood framing.
  • Structural damage to the chimney caused by the ignition of creosote (a black tar-like substance that builds up inside the chimney in normal use).

Even when the heating appliance is properly installed, people with either metal or masonry chimney systems should frequently check the chimney for creosote deposits, soot build-up, or physical damage. This involves only a simple visual examination, but it should be done as often as twice a month during heavy use. If you see heavy creosote buildup, suspect a problem, or have had a chimney fire, a qualified chimney repairman or chimney "sweep" should perform a complete safety inspection. They can arrange for any necessary repairs or creosote removal, which must be done before the heating appliance is used again.

If you have had a fire or other safety problem with your chimney, or would like additional information, call the Commission's toll-free Hotline 800-638-CPSC.

     

 


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