During an inspection, what is a common defect to search for in a chimney?

In chimney inspections, searching for cracks or signs of deterioration in the masonry is critical. This is because cracks can indicate structural issues, such as shifts in the foundation or settling of the structure, which can compromise the overall integrity of the chimney. Deterioration may also lead to water infiltration, which can cause further damage and make the chimney less effective in venting smoke and gases from combustion appliances safely.

Addressing deterioration promptly is essential to ensure the chimney functions correctly and to avoid potential hazards, such as chimney fires or carbon monoxide leaks. Various factors can contribute to the deterioration of masonry, including age, weather exposure, and the quality of the initial construction materials. Hence, understanding the condition of the masonry can give inspectors insights into both immediate and long-term concerns regarding the chimney's safety and performance.