Another purpose of chimney caps is to prevent animals from getting into the chimney. A cap with a mesh will keep raccoons, birds and squirrels away from your house. These small animals know how to climb into a chimney but getting out is an issue. Therefore, they are likely to get stuck there, cause damage and probably find their way into your living area. If they get trapped and die, the carcass will spoil the fresh air of your house. Birds can build a nest inside the chimney because it is warm.
Twigs and leaves may be blown into your chimney if you do not have a cap in place. Wind induced downfalls are also a common issue with cap less chimneys. Your home will be filled with smoke and cold air making it less energy efficient. A chimney cap can be designed and installed to curb these problems and ensure that your chimney remains in good condition and functional for the long-term.