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Excavation trench dug for a sewer connection

Call sheet: the house main

Main Sewer Line Clearing in Whitby

Floor drain brimming every time the washer pumps out, the fault is past the fixtures and into the main line. That is a job for a heavier machine.

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  • Licensed & insured trade work
  • Scope agreed before we start
  • Urgent calls triaged first

Signs you need this

  • Tub water climbs whenever someone flushes upstairs
  • Gurgling from the sink after the washer drains
  • Floor drain weeping or smelling of sewer gas
  • Slow drains on more than one fixture

Kit on the van, and the method

  1. Drum auger with ¼–⅜ in. cable for 1½–2 in. branches
  2. Sectional machine and cutting heads for 3–4 in. mains
  3. Self-levelling camera and locator
  4. Trap wrenches, cleanout keys, drop sheets

Before we leave: Run several fixtures at once and watch the lowest drain for any rise.

Signs the main is the problem

  • Flushing an upper-floor toilet pushes water up out of the floor drain.
  • Several fixtures on different floors are slow at the same time.
  • The lowest toilet gurgles or bubbles when the washer drains.
  • A sewage smell near the floor drain that cleaning does not fix.

Any one of these on its own could be a branch line. Two or more together point at the 4 inch line taking all the house's waste streetward.

Gaining access

Whitby houses built from the 1980s on normally have a cleanout close to the main's exit through the wall, often a threaded plug in a wye fitting. Older homes may have a running trap in the floor with two plugs, one facing the house and one facing the street. Where there is no cleanout at all, we pull the lowest toilet and run the cable through the flange.

Field note. Open a cleanout plug slowly with a bucket ready. If the main is full, the water behind it will come out with force.

Machine and cutters

For mains we use a sectional cable machine, adding six or seven foot lengths as we go, so we can feed well past the foundation and out under the yard. The head is chosen for the blockage. A spade cutter shears through wipes and paper, a root saw cuts fibrous growth at the joints, and a chain knocker is used carefully on scale. We note the distance on the cable when it hits resistance, because that measurement helps a later camera locate the trouble spot.

Proving the line is open

After cutting, we run water from a laundry tub and several upstairs fixtures together and watch the cleanout. A clear main drains this volume without any rise. We then cap the cleanout with a fresh plug or new thread tape.

When a camera should follow

Roots, broken clay, or a belly where the pipe has settled will catch debris again. If the cable came back with roots or the line refilled within a short period, we recommend a sewer camera inspection. A lateral that is failing structurally is covered on our sewer line repair page, and older homes near mature trees should read our note on tree roots and sewer lines.

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