Chimney Caps Prevent Major Problems

chimney cap installed on new chimney construction in marietta gaA chimney cap is an appliance that covers the very top of a chimney. Chimney caps perform several very important functions. Many people believe that no chimney should be without a chimney cap to help prevent chimney leaks. There are, however, problems that can occur as a direct result of the presence of a chimney topper, particularly when the cap is complete with wire mesh, a recommended feature. Check out the following pros and cons of a chimney cap.

Benefits of a Chimney Cap

  • The number one benefit provided by a chimney cap is that it prevents water from getting into the chimney. If there is no chimney cap, the rain pours in and can cause damage to your attic and interior ceilings and walls.
  • If a chimney cap has mesh siding, it can prevent critters from getting into your chimney and causing a variety of problems and inconveniences. Animals that often gain access to chimneys include snakes, squirrels, and raccoons. Birds are also drawn to chimneys because of the warmth they provide, and they will build nests there, if the chimney isn’t capped. When an animal gets stuck inside a chimney, it will often die there, which creates a horrible stench. Dealing with wild animals, whether they are dead or alive, can be very hazardous. It’s best to get the help of a professional chimney sweep because animals in the chimney could be carrying a disease, such as the rabies virus, which is deadly.
  • The wire mesh on chimney caps serves a dual purpose. The mesh also operates as a spark deflector, preventing rooftops and other nearby combustibles from catching fire as a result of a hot ember that escapes through the chimney.
  • It is not uncommon for winds on a rooftop to create a downdraft, which causes smoke to back up into a home. A chimney cap can stop the frustrating effects of downdrafts, which also means cold blasts of air are prevented from creating a chilling effect in your home.
  • Another good feature of chimney caps is that there are many styles available to cover any type of chimney, such as a masonry chimney or a metal pipe chimney. The most expensive and decorative chimney caps are made of copper, and they can actually elevate the style of your home’s exterior.

Chimney Cap Maintenance

  • Chimney cap mesh sometimes has very small openings that are easily clogged with creosote. Anytime firewood is burned, some creosote is deposited in the flue lining; and it can also become attached to the mesh of the chimney cap. The oxygen needed for the fire can be cut off as a result of an obstructed chimney cap. This can result in difficulty lighting a fire and in inefficient fires that don’t produce much warmth. Any type of chimney obstruction can also expose the household to toxic fumes, including deadly carbon monoxide.
  • Black fine powder called soot can also obstruct the chimney cap. If the fuel is clean-burning, less soot and creosote will be deposited. But if green or moist wood is burned, there is a greater likelihood of having a chimney cap that is obstructed by soot.
  • Types of Chimney CapsIt is recommended that paper not be burned in a fireplace, and one reason is that ash can easily become trapped in the chimney cap netting, creating blockage.
  • High winds can cause leaves and other types of debris to clog chimney caps.
  • In heavy winter storms, snow and ice can block the chimney cap mesh.
  • If creosote and soot accumulates in the chimney cap mesh, the chimney and roof as well as the surrounding stucco or brick can become discolored.

All of the potential problems associated with chimney caps are easily addressed with routine maintenance; and the pros far outweigh the cons. Annual chimney inspections include attention to chimney caps and removing any obstructions. Even if you rarely use your fireplace, there is the possibility of chimney cap obstruction that should routinely be addressed.

Chimney Solutions, Inc.
1155 McFarland 400 Drive, Alpharetta GA 30004
Office 770-255-1300

Chimney Sweep / Chimney Repairs / Chimney Liners / Fireplace & Stove Service
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Chimney Solutions
1155 McFarland 400 Drive AlpharettaGA30004 USA 
 • (770) 255-1300
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