Bad odour coming from basement

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Occasionally I have a bad odor (SEWER SMELL)at my back door which is at the top of the basement stairs and the plumbing stack is in that wall. I had it checked and it is not natural gas. Could it be a backdraft from the plumbing stack?


Answer ( 1 )

  1. This could be a dry p-trap. What I would suggest is you go around to all drains and run some water down them.

    Knight Logo Knight Plumbing, Heating and Air Conditioning, serving Calgary

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