What are signs that indicate a chimney needs repair?

A chimney that requires repair often displays specific physical signs, which include cracked masonry, a leaning structure, and leaks. Cracked masonry indicates that the structural integrity of the chimney is compromised, which can lead to further issues such as water intrusion and deterioration. A leaning structure suggests that there may be a failure in the foundation or support of the chimney, raising concerns about safety and the potential for collapse. Leaks can lead to water damage inside the chimney and the surrounding areas, contributing to further deterioration of both the chimney and the home.

While excessive smoke output, increased heating bills, and reduced draft can be indicators of problems within the chimney or fireplace system, they do not directly showcase physical damage or structural integrity issues like cracked masonry, lean, and leaks do. Therefore, the physical signs of damage are the most telling indicators that repairs are necessary.