WHY IS IT IMPORTANT TO HAVE A CHIMNEY CAP?
A. Keeps rain water from coming down your chimney. Rain water can damage many components of your chimney. Many times rain water can damage stainless steel liners, dampers and can even saturate mortar joints. Water can soak inside a chimney and produce mold and other non-pleasant results.
B. Keeps animals out of your chimney flue. Many times animals can make a home inside your chimney. These animals include birds, raccoons, and squirrels. Sometimes the animals can not get out of the chimney and will die. This problem produces maggots, flies, and usually results in a fairly nasty odor. A professionally installed chimney cap is sized for a custom fit to prevent animal intrusion.
C. Prevents wind induced downdrafts. Many times wind will blow in a certain direction and can cause downdrafts. If your fireplace is drafting smoke, wind may be blowing smoke back into your home. The flat portion of the top of a chimney cap is designed to prevent wind induced down drafts.
D. Spark arresting. Many times people refer to a chimney cap as a spark arrestor. This is a fancy term that tells you that your chimney cap can prevent many lit embers that travel up your chimney from landing on your roof. These embers can catch your roof on fire.
E. Keeps out leaves, branches and twigs which can lead to blockage.