A chimney cap is used to cover the outside opening of your chimney. There are many benefits to installing a chimney cap, such as the prevention of rain or any other precipitation from seeping into the chimney, dampening the fire. Chimney caps also prevent animals such as birds from nesting in the chimney or other animals like squirrels from entering the chimney. Although chimney caps offer these benefits, there are some downsides, making chimney caps an option only for some. For one, chimney caps can collect creosote and soot just like your chimney flue pipe does, making cleaning a must for chimney caps. Chimney caps can also collect ice from heavy snowstorms, causing a blockage in the cap. Depending on how often you use your fireplace or wood-burning stove and based on the pros and cons you see in each situation, a chimney cap can be a good option for you. Contact your local chimney contractor for more information on the types of chimney caps available.