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    Chimney pipe installation

    Domes and AirCrete
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    • O
      Obo Martin Workshop Graduate last edited by Obo Martin

      Ok ., question
      I cut a hole in our dome and put an insulated chimney pipe through . What’s the best advice on chimneys going through aircrete. ., we sealed it up with Henry’s and some roofing tape . Doesn’t look very tight . What would you do to seal waterproof . Ect

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      • O
        Obo Martin Workshop Graduate @Obo Martin last edited by

        @obo-martin do I need to reinforce the opening I’m wondering if I’ve weakened the structure leaving a hole in it . With just Henry’s sealing it at the moment

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        • Zander
          Zander Dragon Tamer Workshop Graduate Forum Administrator @Obo Martin last edited by

          @obo-martin Regarding structural integrity, a 10-12 inch round hole should not be a significant structural weakness, assuming your wall thickness is at least 3.5 inches. Circular penetrations have the least structural impact. Read this post describing the impact of earthquakes on raw cut circular openings for windows that were about 4 feet diameter cut into 3.5" thick dome walls.

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