This has been going on for 3 days, and only at specific times (usually between 5-7am). Air bubbles come up the toilet for half an hour (pretty random, not using any taps). Afterwards, trying to flush the toilet usually results in an overflow, the sink and shower do not empty. What's unusual is that for the rest/most of the day, everything works fine. We've also had unusually warm weather this week, which is causing the snow to thaw quickly. Should I call a plumber or city sewage department?
Thanks in advance for any responses,
~ Fred
Thanks in advance for any responses,
~ Fred