Services ยท Renovation
Basement Bathroom Rough-In for Homes Across the GTA
A basement bathroom means breaking concrete, tying into the main drain and getting slope and venting right below the level of the sewer.
- Shut-offs replaced when they will not close
- Trap and supply lines rebuilt under the fixture
- No-leak check with water running

Diagnosis first, tested after
- Licensed & insured: ask us
- Camera before cutting
- Water-tested repairs
- Booked by phone
Reasons to add a washroom downstairs
Finishing a basement, adding a secondary suite, or making a home work for a growing family are the usual reasons. Some homes already have a capped rough-in from the builder; we check that it is usable before relying on it.
On the job, step by step
We lay out fixtures, saw-cut and break the slab, and trench to the existing drain at proper slope. New drains connect with approved fittings and each fixture gets a trap and vent. Venting usually ties into an existing stack or runs up through a wall. After inspection, the trench is backfilled and concrete is poured. Supplies run overhead in the joists. If the fixtures sit below the sewer, an upflush or sewage ejector pump is used.
- Layout and permit
- Cut and trench
- Drain, trap and vent
- Inspect
- Pour
GTA houses and what they change
A backwater valve belongs in any basement with new fixtures, and many municipalities require one with new basement plumbing. Older homes with shallow footings need care when trenching nearby. Secondary suites have additional building code and fire separation rules.
Before you pick up the phone
Ask whether the quote includes the permit, concrete work and the backwater valve. Call (365) 387-8531.
Signs you need this
- Shower runs scalding or cold with no middle ground
- Handle stiff, loose or spinning freely
- Stains or soft drywall behind the tub surround
What is included
- Basin wrenchReaches faucet nuts behind a sink bowl
- Slip-joint and P-trap partsRebuild the trap and tailpiece under the sink
- Typical cause
- Worn cartridges, scale, loose traps
- Access point
- Under the sink, behind the trim plate
- Proof of fix
- Dry cabinet, steady temperature, no drip
Common questions
What is an upflush toilet?
A toilet with a macerating pump that lifts waste to a higher drain. Useful where trenching to the main is not practical.