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Leaking Chimney

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  1. #1
    1K Club Member Gooner's Avatar
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    Default Leaking Chimney

    With all the rain last night, my folk's house had water coming down the chimney.

    Drone inspection today shows that it may need some love and care.

    What do people recommend to do here? Looks like there is some tar substance which may have deteriorated over the past 20-30 years or so. I would think it needs to be pressure wash and some water proofing put on top.

    What course of action, including products, would people recommend?
    Attached Thumbnails Attached Thumbnails 2020_11_chimney-_2-.jpg  
    I'm no expert, but know enough to be dangerous...
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  2. #2
    3K Club Member johnc's Avatar
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    For a quick job I would get some grey waterproofing for external (roof) use and apply that. If you want to go to a bit more trouble remove all the cement render,mud, replacing what is probably some cement sheet (possibly asbestos) underlay. Then making up a mud mix with a bit of bondcreate added and reapply making sure is is sloped from the penetration to the outer edge of the brick work.

    Of course make sure you don't fall off before you finish.

  3. #3
    Seasoned DIY droog's Avatar
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    It is just mortar on the top, heater installer, brick layer or a handyman should be able to remove the old mortar and replace.

    A heater installer would also be a wise choice and have the heater checked as it looks like a gas cap on the chimney.

  4. #4
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    1. Scrub flat area with stiff brush to get rid of lichen and the like.
    2. Dampen surface and apply flashcrete with trowel and brush.
    Alternatively, carry out 1, then apply fillcoat fibre with trowel an brush.

    Flashcrete available in 8kg bucket.
    Fillcoat fibre available in 1L & 4L tin.

  5. #5
    1K Club Member Gooner's Avatar
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    Default

    Thanks for the responses. Appreciate it. Just not a job I have had to do before as I don;t have a chimney so wanted some advice. My brother was up on the 2nd story roof at 2am trying to stop all the water pouring in.

    On that note, this post is my 1000th post on this forum. It only took around 13 years or so.

    Anticipating a letter from the Queen and I'm sure someone will PM me soon with instructions for the secret handshake.
    I'm no expert, but know enough to be dangerous...
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  6. #6
    Slow but rough Uncle Bob's Avatar
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    Welcome to the 1K club Gooner!

  7. #7
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    Default

    In a similar but smaller situation I had a galvanised pan folded with 4 sides and a small upstand and then used a dektite over it to go around the flue...
    Solved pretty much forever...
    The pan went down the sides about 1 course of bricks...
    And.....your point is.....what exactly?

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