Pipe Repair & Replacement in Ajax — Galvanized, Poly-B & Builder-Grade Plumbing Specialists

Ajax was originally built as a munitions factory town during WWII — the south Ajax homes dating to the 1940s–1950s share the same wartime construction characteristics as other Toronto-area post-war communities: small footprints, minimal insulation, and galvanized steel plumbing that was never designed to last past the 1980s.

Galvanized steel pipes corrode from the inside out. After 40–50 years, interior rust deposits restrict water flow to a trickle and the pipe walls thin to the point of pinhole leaks. If your Ajax home was built before 1965 and still has original plumbing, reduced water pressure and rust-coloured water are early warning signs of imminent failure.

The second major pipe issue in Ajax affects homes built between 1985 and 1995 — particularly the townhome complexes in central Ajax. These homes often contain Poly-B (polybutylene) pipe, a grey flexible plastic that reacts poorly to chloramine — the disinfectant used in Durham Region water supply. Poly-B pipes fail at the fittings, causing sudden leaks inside walls and ceilings.

Newer Ajax subdivisions (2000s–2020s) used copper or PEX supply lines. These are generally reliable but builder-grade copper fittings can develop pinhole leaks after 20+ years, particularly in homes near the former Defence Industries Limited site area where soil conditions vary.

Toronto Plumbing Pros handles all pipe repair and replacement in Ajax, with services matched to the specific pipe types found in each era of Ajax construction:

Galvanized pipe replacement (south Ajax 1940s–1960s homes):
Full galvanized-to-copper or galvanized-to-PEX supply line replacement. Camera inspection to map existing runs. Minimal drywall opening using modern flexible PEX runs where possible.

Poly-B pipe replacement (1985–1995 Ajax townhomes):
Full or partial replacement with PEX. Insurance-compliant documentation provided. Poly-B should be replaced proactively — many home insurers now refuse coverage or charge higher premiums for homes with known Poly-B.

Pinhole leak repair (copper pipe in 2000s+ homes):
Spot repair with copper coupling or section replacement. Camera inspection to identify additional thinning areas before water damage occurs.

Durham Region plumbing jurisdiction:
Ajax falls under Durham Region and Town of Ajax building permits — a different inspection process from Toronto, York, Peel, or Halton. Toronto Plumbing Pros manages permit applications and inspections under Durham Region requirements.

Because Ajax is a commuter town with many empty homes during weekdays, slow pipe leaks can cause significant damage before detection. (437) 290-0902 for emergency pipe leak response.

Ajax pricing is approximately 10% below Toronto base rates.

Service	Price Range (CAD)
Pinhole leak repair (spot fix)	$180–$360
Galvanized pipe partial replacement (1 run)	$900–$1,800
Full galvanized-to-PEX re-pipe (2-bath home)	$4,500–$9,000
Poly-B partial replacement	$720–$1,800
Full Poly-B re-pipe (2-bath home)	$3,600–$7,200
Camera inspection + pipe assessment	$180–$270

Do not attempt to patch galvanized pipes. The pipe wall surrounding a leak is often paper-thin — a patch clamp simply moves the failure point 6 inches down the line. Full section replacement is the correct approach.

For south Ajax post-war homes with galvanized supply lines, Toronto Plumbing Pros recommends replacing the entire supply system in one project rather than piecemeal repairs. This minimizes total disruption and produces a consistent plumbing system with warranty coverage.

Call (437) 290-0902 or fill out for a pipe assessment appointment.