Pipe Repair & Replacement in Toronto & GTA — Galvanized, Copper, Poly-B Specialists

Pipe repair and replacement covers all supply and drain piping within the home — from the water service entry at the foundation to every fixture in the building.

Pinhole leak repair is the most common pipe repair in GTA homes. Copper supply pipes in homes built between 1970 and 2005 develop pinhole leaks from Toronto's moderately hard water (7.3 gpg) reacting with the copper over decades. A single pinhole can be repaired with a coupling; widespread pinholes indicate the full run needs replacement.

Galvanized steel pipe replacement is required when interior corrosion reduces water flow to a trickle. Most pre-1965 GTA homes were plumbed with galvanized steel. When flushing the system produces orange or brown water, or when flow to upper-floor fixtures drops to a trickle, full replacement is the only lasting solution.

Poly-B (polybutylene) pipe replacement is a major project in many GTA homes built 1978–1998. Poly-B was widely installed in Ontario and is known to fail suddenly, particularly where it connects to brass or copper fittings. Toronto's chloramine-treated water accelerates degradation. We replace Poly-B with PEX-A or copper depending on client preference.

Frozen pipe repair follows winter pipe-freeze events. Split pipes from ice expansion are common in under-insulated crawl spaces and exterior walls — particularly in older Ajax and East York homes with minimal wall insulation.

Camera scoping is included for any project involving main drain lines or where leak location is uncertain.

Pipe repair costs range from $200 for a simple coupling repair to over $8,000 for whole-house Poly-B repiping.

Work	Cost Range (CAD)
Single leak repair (coupling)	$200–$450
Section of galvanized pipe replacement	$400–$1,200
Poly-B repipe (whole house)	$3,500–$8,000
Galvanized repipe (whole house)	$4,000–$10,000
Frozen pipe repair	$250–$600
Lead service line replacement (private portion)	$3,000–$8,000

Scope of work, pipe material choice (PEX vs copper), and access difficulty are the primary cost drivers. Homes with finished basements and walls add $500–$2,000 for drywall access and repair.

Look for these indicators:

• Brown or orange water from hot and cold taps (galvanized corrosion)
• Low water pressure throughout the house or on upper floors only
• Visible green staining on copper pipe exteriors (active corrosion or pinhole leak)
• Damp spots on walls, ceilings, or floors with no visible source
• Water meter spinning when all fixtures are off (active leak)
• Poly-B grey plastic pipes visible in utility areas (time to assess condition)
• Pipes over 50 years old that have never been replaced

Step 1 — Leak detection. We isolate the affected section using pressure testing and camera scoping where needed. This prevents unnecessary wall or floor opening.

Step 2 — Scope definition. We determine whether a spot repair is appropriate or whether the condition warrants a broader replacement. A written report with photos is provided.

Step 3 — Material selection. We recommend the best pipe material for the application — PEX-A for flexibility in retrofit scenarios, copper for exposed or high-temperature runs, CPVC for specific applications.

Step 4 — Installation and testing. All new piping is pressure-tested before walls are closed. We handle permit applications for projects requiring building permits.

Step 5 — Documentation. We provide photos of all new installations for homeowner records and insurance documentation.

Pipe repair and replacement is offered in these areas:

North York pipe repair | Brampton pipe repair | East York pipe repair | Leaside pipe repair | Markham pipe repair | Milton pipe repair | Mississauga pipe repair | Oshawa pipe repair | Vaughan pipe repair

See your area's page for local pricing adjusted for area conditions and any relevant permit requirements.

• Poly-B pipe replacement guide — what GTA homeowners need to know about polybutylene pipe
• Lead pipe replacement Toronto — the City's program and the private portion cost
• Frozen pipe prevention — protecting GTA homes in winter