Think Chimney Leaking? Here’s What You Need To Know

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    As winter approaches, homeowners start preparing themselves for the cozy evenings spent indoors in front of a warm fire. However, there’s nothing more frustrating than finding out that your chimney is leaking, causing water damage to your walls and ceilings. Your chimney is an essential component of your home’s heating system and requires proper maintenance to ensure it is in tip-top shape. In this article, we’ll discuss everything you need to know about chimney leaking and how to address it.

    What Causes Chimney Leaking?

    Chimney leaking is often caused by several factors such as:

    Masonry Damage

    As your chimney ages, it becomes susceptible to freeze-thaw cycles, causing brick and mortar to wear off. This damage allows moisture to penetrate through the chimney and, in turn, causes chimney leakage.

    Cracks in Chimney Crown

    The chimney crown protects your chimney from water damage. If it wears off due to extended UV exposure or natural weathering, you are likely to start experiencing chimney leaks.

    Flashing Problems

    Flashing is a sealing component used to prevent water infiltration between the roof and the chimney. Under certain conditions, flashing can fail, allowing water to seep in and cause water damage.

    How To Spot Chimney Leaking?

    Detecting water leaks in your chimney is very crucial before it causes significant damage to your property. Here are some warning signs that may indicate your chimney is leaking:

    Water Drips

    Leaking chimneys usually have water dripping around the fireplace. A pool of water or a wet spot around the fireplace is a sign of chimney leakage.

    Damp Smell

    Your chimney’s dampened walls and mildew smells are an indication that it is already leaking.

    Staining or Peeling Wallpaper

    Damaged chimney masonry will lead to water damage inside the house, causing your wallpapers to peel off.

    How To Fix Chimney Leakages?

    There are several ways to fix chimney leaks; these can be any of the following:

    Replacing Masonry

    If most of your chimney’s damage is focused on the bricks and stem, masonry replacement is the best solution.

    Repairing Crown

    A strong material is required to repair the crown after detecting its damage. Concrete mixes are readily available online and can help solve this problem.

    Flashing Repair

    Replacing or repairing the flashing is required if it is the source of the leak.


    Applying waterproofing to your chimney walls seals the spaces between the bricks, making it less vulnerable to leaks.


    Chimney leakage is a common problem among households, especially during the winter months. It is therefore essential to spot the signs of chimney leaks and resolve them immediately before it causes significant damage. In case of leaks, it is advisable to seek professional help from experienced chimney contractors. Regular inspection and maintenance of your chimney will save you from incurring hefty bills that come with repairing water damage.

    FAQs About Think Chimney Leaking

    1. How can I tell if my chimney is leaking water?

    Look out for water drips around your fireplace, damp smells from the chimney, or stained wallpapers.

    2. Is it dangerous to use my chimney if it’s leaking?

    Using your chimney when it’s leaking can be dangerous, as it could cause an electrical hazard or chimney fires. It is advisable to seek professional help before using it.

    3. How much does it cost to fix a chimney leak?

    The cost of fixing chimney leaks will depend on various factors such as the extent of the leak, the materials required for the repair, and the inspection and labor costs. It’s best to request a quote from a professional chimney contractor.


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