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  3. Planning Plumbing for a Bathroom Reno
Workbook

Planning Plumbing for a Bathroom Reno

A bathroom reno looks like tile and fixtures, but the plumbing decisions made at the start shape the whole project.

  • Plain steps you can follow safely
  • When to stop and call a plumber
  • Tools and parts listed up front
  • Written for Scarborough homes
Modern bathroom design featuring bathtub, sink, and washing machine
Modern bathroom design featuring bathtub, sink, and washing machine
Tested on siteWater runs through every repair
Price agreed firstCause shown before any cutting

Keep or move fixtures?

Keeping the toilet, tub and sink where they are saves money. Moving a toilet means moving a large drain.

Permits

Changing drains or adding fixtures usually needs a City of Toronto plumbing permit.

Order matters: Plumbing rough-in comes before drywall. Inspection comes before closing walls.

Decisions to make early

  • Tub or walk-in shower
  • Pressure-balancing or thermostatic valve
  • Vanity height and sink type
  • Toilet rough-in distance
  • Access panel for the shower valve

In older Scarborough homes

  1. Check the stack and drain material.
  2. Replace old supply lines while walls are open.
  3. Confirm venting meets code.

Budget and schedule notes

Plumbing usually takes a small slice of a bathroom budget, yet it decides how smoothly the rest goes. Leave room for surprises behind old walls, such as a cracked cast iron fitting or a galvanized line that crumbles when touched. Book the plumber early, because the rough-in has to be finished and inspected before the tile setter can start, and a missed inspection can stall the whole job for days.

Next steps

See bathroom renovation plumbing.

Things callers ask us

How long does rough-in take?

A few days for a typical bathroom.

Do I need an access panel?

It is wise for shower valves.

More from the workbook

Call now: (365) 363-7205