Asked on Mar 29, 2013

Leaky chimney repair

Marion NesbittVernon HodgsonWoodbridge Environmental


I have a very old chimney. It leaks every time it rains. We've patched and sealed so often the recycle center knows us by name! Can this be permanently "DiY" repaired? If so how?
8 answers
  • Masonry or... Where is the leak? Got pics?

  • Beverly Brannan
    on Mar 29, 2013

    Masonry. We think it is a sandstone block (go figure). Very popular in the 50s. Not so popular now. Question is replace or repair?

  • Beverly Brannan
    on Mar 29, 2013

    No pics yet. Not raining today! Just found this site. Pic can be made this weekend as we are expecting rain! Roof is new. Company was supposed to have sealed the chimney. It leaks.

  • Many people seal chimneys with no luck. Reason is brick cannot be successfully sealed! It must be properly flashed with a good quality masonry cement cap on the top. All mortar joints must be tight as well. Do not waste your money on any sealer, asphalt coating, or paint. Many try clear sealers that do nothing other then empty your wallet. I suggest that you have a professional chimney sweep look at this issue for you. If the outside is in poor shape, it may be just as bad on the inside. Only a on site personal evaluation can determine the condition and how to correct.

  • Beverly Brannan
    on Apr 5, 2013

    Good advice. Thanks. We'll look into that. How does one identify a professional vs someone who is blessed with words and not deeds?

  • Look for professionals that are members of larger organizations such as the national chimney sweeping guild. Ask for references and lastly do not pay large deposits or final payments until work is complete and if needed inspected by your local building department if required.

  • Vernon Hodgson
    on May 28, 2015

    Call your Bricklayers local union, and ask them for a trained professional. Most homes and fireplaces are built by non union, and most of them have not been trained in anything, a union bricklayer has to go to 3 yrs nite school, and 3 yr apprenticeship. Any masonry product can be sealed, you just have to know what type of sealer to use. And by the way, chimney sweeps know absolutely nothing about building or repairing fireplaces,chimney sweeps clean the flues, nothing else.

  • Marion Nesbitt
    on May 29, 2015

    Is there flashing around the chimney where the brick meets your roof? Friend had the drywall in his dining room ruined. Found that the flashing needed to be replaced.

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