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Common Causes of Chimney Leaks

From time to time, homeowners can find themselves trying to diagnose the root cause of a leak in their roof. While roof leaks are a somewhat common occurrence, sometimes they can be mis-diagnosed, when the real culprit is a leaky chimney. Properly installed chimneys are completely safe to the integrity of your roof, but they’re not fail proof. Here are the top 3 reasons chimneys leak, and what homeowners can do about them: 

#1: Leaking Flashing 

The most common cause of a chimney leak is damaged flashing. The flashing is the metal that wraps around the chimney at the point where the chimney meets the roof. This metal sheet ensures that the surface where there is contact is sealed and watertight. When this flashing is damaged, it can open the chimney up to leaks and result in water damage to the roof. 

#2: Missing Chimney Cap 

A missing chimney cap is another common cause. This problem comes with an easy solution – replace the cap! The chimney cap sits on the top of the chimney, and guards the entrance against excess rainwater, as well as debris and small animals from entering the chimney. When it’s missing, the chimney is wide open to water, and that can cause leaks inside. 

#3: Damaged Bricks And Mortar Cause Chimney Leaks

The third most common cause is brick and mortar damage. When bricks or mortar are cracked, water can enter in through the crevices, and in colder weather, expand.This can cause continued cracking and open your chimney up to leaks and further damage.

If you’re experiencing a leak and haven’t been able to determine the cause, you should probably get your chimney inspected. Most chimney damage is almost impossible to spot from the ground, so a professional inspection is usually the best solution. If you need a professional roofing contractor to inspect your roof, Cenvar Roofing is your answer! Our convenient location in Christiansburg allows us to deliver superior service to the entire New River Valley region. Schedule your free estimate today!