A CHIMNEY CAP is a cover for the chimney that serves several purposes. Capping a chimney prohibits destruction on the inside from elements such as snow and rain. It prevents fire sparks from escaping from the chimney and landing on the roof, which can be very dangerous.
Chimney caps also keep birds, squirrels and other animals from entering the home through the chimney. Finally, chimney caps keep out leaves and other natural elements that can be blown in during storms.