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Repairing Leaky Chimneys

There’s really nothing more devastating and damaging to a chimney system than a leak. The destruction is typically widespread, leaving masonry in disrepair, flue liners cracked or rusted through, and fireboxes crumbling and cracking. Dealing with a leaky chimney can be costly, and locating the source of the leaks can be time-consuming and frustrating. But with the years of experience, training and troubleshooting skills of Bulldog Chimney Sweeps, leaks don’t have to mean the end.

At Bulldog Chimney Sweeps, we specialize in locating and stopping leaks, installing custom flashing, and preventing future leaks through waterproofing. All of our technicians are extensively trained in comprehensive chimney care and can discuss all processes and their benefits with you before, during, and after the job. With Bulldog Chimney Sweeps, you’ll never be left in the dark or on your own – we’ll talk you through every step and every option.

Common Causes Of Leaks

Some of the most common causes of leaks that we see are:

  • Damaged or Missing Flashing – Flashing refers to sheets of metal that are custom fitted to the area where your chimney intersects with your roof. These metal layers are designed to protect the chimney system from water, and encourage rain, snow, and sleet to run off of the roof instead of settling around the chimney. Chase collars are also considered flashing, as they perform a similar function for prefabricated chimney systems. Whenever flashing is bent or pried from its point of installation, it can allow water to seep through the gaps, and it may also accumulate water and rust through. Professional installation and regular inspections can help make sure that flashing stays put and performs its job well. For more information on flashing, click here.
  • Crown/Chase Cover Disrepair – The crown of the chimney is a concrete or masonry seal on top of the chimney. It is a crucial part of leak-prevention and should be regularly evaluated for effectiveness. Typical crown problems are related to poor design and installation. If a crown is not of proper thickness or width, it may rapidly deteriorate due to harsh weather. If it does not have enough overhang, it may be dumping water directly onto the flashing. Both of these design flaws can lead to serious water damage. For more information on crowns and crown repair, click here. A chase cover basically serves the same purpose as a crown, but it used on a prefabricated chimney system. For more information on chase covers, click here.
  • Missing Or Damaged Chimney Caps – Chimney caps are metal fixtures that sit above the crown of the chimney. They are designed as added protection against wind, rain, animals and debris, and play a crucial part in leak prevention. Unfortunately, many caps are improperly installed or damaged or removed during strong storms. For more information on chimney caps, click here.

If you’re suffering from a leaky chimney – we can help! We are dedicated to locating, fixing, and preventing all leaks. Call us today or click here to schedule an appointment online!


As part of everything we do for your chimney, fireplace and vent systems, we provide expert troubleshooting and diagnostic services to get at the root of any problem. Give us a call and we can fill you in.


Golden Flue Cecure Chimney Systems Regency Fireplace Products Heatfab Majestic Products Vermont Castings

Certifications & Associations

CSIA National Fire Institute Certified Hearth, patio, And Barbecue Association Member of the National Chimney Sweep Guild

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